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Gain Without the Pain:  Gain Structure for Live Sound Part 2

 

In my last blog, I outlined the basics of gain structure, and how to get to a good starting point for your mix. This time I want to discuss a few situations where you might take different approaches to how you set your gain, and why.

I like to think of gain as a tennis ball growing out of the mic if it’s omnidirectional, or a peach for cardioid mics, with the stalk-socket (is there a word for that?) at the point of most rejection. Bidirectional/figure eight mics always remind me of Princess Leia’s famous hair buns in Star Wars. Whatever you imagine it as don’t forget that the pick-up pattern is three-dimensional. There can be a bit of a subconscious tendency to think of pick-up patterns as the flat discs you see in polar plots, so don’t fall into that trap! The main thing to remember is that as you increase the gain, you’re expanding the area in which the mic will pick noise up in every dimension, not just in the direction of what you want to amplify. This will be more of an issue in some circumstances than others, so they can benefit from different approaches.

Quiet singer, noisey stage

My first example is the one I encounter most often and causes me the most issues. You have a loud band on a reverberant, noisey stage, and you’re trying to get the vocals audible, or even nice! This can be a bit of a challenge even with a strong singer, but a quiet vocalist can seem impossibly lost in the mix. Thinking back to my previous post, the problem in this situation is that the other instruments, the crowd and everything reflecting back off the walls is keeping the noise high in the signal-to-noise ratio. Turning the gain up will just bring more of that noise into your board and muddy the mix. Upping the gain for monitors will increase the likelihood of frequencies in the monitor mix being picked up by the mic, which feeds back to the monitor, which feeds back to the mic… which creates feedback!

In an ideal world, the other players would set their instruments at reasonable levels, and the vocalist would sing loudly, close to the mic. This would increase the signal-to-noise ratio naturally. Unfortunately, this often doesn’t happen for one reason or another, and you need to fix it at the board. In these situations I try to keep the gain as low as possible while still picking the vocalist up. I use high and low pass filters to get rid of the unnecessary noise in ranges away from the vocalist’s frequencies. I might EQ a few bits out of the vocal channel where other instruments are being picked up more than the singer, and might EQ out some vocal frequencies from other channels to give them some more space to be heard. I then try to have the fader as high as possible while still leaving some headroom. Setting your master fader or monitor mixes at +5 instead of 0 can give you the extra volume you need, while keeping the gain as tight as possible. I very rarely find myself needing to turn an entire mix-up mid-show, and if it comes to it I can just turn up all the sends from the channels instead. There are plenty of other tricks to get vocals to stand out in your mix, but that is beyond the scope of this post.

Wandering keynote speaker

On the other end of the noisey gig spectrum is the classic corporate speaker who won’t stay near the lectern mic. I think one of the most misunderstood aspects of live sound by people outside our industry is that the mics pick everything in their field up, in every direction, whether the sound is intentional or not. For example, I had someone loudly shuffle their notes and bang them on the lectern, cough and say something privately to an assistant right by the mics as they were supposed to start their speech. They then fully wandered the 20 metre (roughly 60 feet) wide stage, talking at normal conversational volume, expecting the mics to pick them up perfectly, no matter where they were. Quickly muting the channel when it’s apparent the speaker is still preparing solves the first issues, but there’s not much you can do about audibility when they’re metres away from the mics. This is an extreme example. However, it is very common for people to stand at a lectern but talk quite far away from the mics, turning their heads repeatedly to gesture towards their presentation.

Hopefully, the stage at a conference isn’t as noisy as a rock band in a club, and the audience are mostly quietly paying attention rather than screaming and cheering. It’s less common to have stage monitors, and with any luck, the PA is quite far away from the mics. In this case, you can get away with turning the gain up, to catch more of what they’re saying. Just remember to add a pretty strong compressor for when they inevitably lean in and suddenly talk loudly, directly into the mics. This can also help if you have several people using the lectern without soundchecking. You can set the mics to as high a gain as is stable, so even if they’re quiet you’re covered. If they’re loud you can always turn them down.

Popping lavalier or headset mics

You don’t always want your sound source as close to the mic as possible. Plosives in speech; the consonant sounds made with a burst of air, like p’s and b’s, can sound horrible on sensitive mics like lavaliers or headsets. These mics can also pick up too much sibilance. In these cases, it’s best to move them slightly further away or off-axis (by a matter of millimeters) so they aren’t in the firing line of the speaker’s breath, then turn the gain up to compensate. You might have noticed that lavaliers are often attached completely upside down for recording or TV. This stops the mic capsule being battered by those plosives and reduces sibilance, and the recording engineer can turn the gain up as much as needed without worrying about feedback because there are no speakers in the room.

I hope these examples have helped you to see how gain structure is just another tool in your mixing bag of tricks. There are good rules of thumb to follow for getting a decent signal-to-noise ratio quickly, but they aren’t written in stone. If you need to move the balance around or adjust different aspects of the channel strip to make your particular situation work, just try it (gradually if the show is already live!). It’s easy to talk about what the correct approach is in a textbook situation, but real life is very rarely ideal. Do what you need to do to get it working. If it sounds good in the end, that’s all that matters.

Girl Boss

To be a woman in our industry it takes a lot. A lot of power, energy, skill, leadership, determination, drive, patience, compassion, emotion, and strength.  I was recently given a card that I feel sums up the entire kind of woman it takes to stand tall through all the experiences we encounter in this career and in our daily lives.  The card said:

~ Girl Boss ~

A woman in control, taking charge of her own circumstances in work & life. Someone who knows her worth and won’t accept anything less. She is not a “mean girl” in fact, she hates “mean girls.” She is empowering and inspiring those around her.

A girlboss knows that if you don’t have big dreams and goals, that you’ll end up working really hard for someone who does.

This speaks volumes to me. It is so true! It doesn’t focus on the differences that we are often compared with by society such a girly, sporty, glam, or butch. Those names are set aside and we’re allowed to be our individual selves and no matter if we like makeup or not, tight clothes or not, dresses and heels, or t-shirts and converse; we go after our goals, reach for the stars, and breakdown walls that do not belong.  We are Girl Bosses. This statement shuts down the stereotypes and lets us be accepting and empowering of all. It sets aside the Hollywood idea of the mean girl that puts others down in exchange for empowerment and support. It lets us be who we want and need to be to excel, find our happiness, and meet our goals.

Be this woman, make friends with this woman, support this woman. Be the Girl Boss and build other Girl Bosses around you because Girl Bosses are awesome and we need more of them just like you!

Find the card here: https://www.etsy.com/listing/526187802/girl-boss-card-boss-babe-boss-lady?ga_search_query=girl%2Bboss&ref=shop_items_search_4&crt=1

 

Women in Audio Engineering

During the first week of November, my alma mater, the DePaul University School of Music, held an 11-day music festival with numerous masterclasses, panel discussions, and concerts to commemorate the unveiling of its new Holtschneider Performance Center.  I was asked to take part in the panel discussion sponsored by the Sound Recording Technology department titled Women in Audio Engineering. The panel sought to bring to light the fact that although women are a minority in music production and audio engineering (according to Women’s Audio Mission, women make up five percent of all audio professions), there are many notable women contributing in these fields. In addition to highlighting the professional hurdles and triumphs faced by the all-female panel, the moderator, Tom Miller, Director of Sound Recording Technology at DePaul, also posed several important questions regarding how we, as an audio community, can strive to achieve parity in the future.

Highlighting a Few Amazing Women

Although women from every generation continue to forge ahead in our field, the hard reality of being only five percent of the industry means that women rarely have the privilege of meeting one another.  My hope with this post is that the accomplishments of the women I recently met at this panel can inspire and invigorate fellow female (as well as male and non-binary!) audio professionals from afar.

The women listed below are not affiliated with Boom Box Post or the opinions expressed in this blog post. The following bios were supplied to DePaul University by the panelists themselves:

Christine Schyvinck

Chris Schyvinck is Chairman, President, and Chief Executive Officer at Shure Incorporated, the world’s leading manufacturer of microphones and audio electronics. As the highest-ranking officer at the Company, she is one of a few women to hold an executive position in the pro audio industry. Her leadership has been integral to the steady growth and profitability of Shure.

During her tenure, Chris has led critical initiatives for the Company, including reducing material costs without sacrificing product quality, dramatically improving on-time delivery, and globalizing manufacturing operations. She joined Shure in 1989 as Quality Control Engineer. After several promotions, she moved into Process Engineering, becoming manager in 1997. In 1998, she was made Vice President of Corporate Quality.

Two years later, Chris was named Vice President of Operations, responsible for Corporate Quality, Procurement, Supply Chain, and the Company’s manufacturing facilities in Mexico and China. She was promoted to Executive Vice President in 2004 and directed the opening of Shure’s first manufacturing facility in China one year later.

In 2006, Chris was tapped to head the Global Marketing and Sales Division, assuming management of the Company’s Business Units in the Americas, Europe, Middle East/Africa, and Asia/Pacific regions as well as the strategic integration, marketing, sales, artist and public relations, technical support, and customer service functions. Sales increased by more than 78 percent during her ten-year period as Executive Vice President of GMS.

In 2015, she was designated Chief Operating Officer, and, in 2016, was appointed Shure President and CEO, becoming only the fourth such officer in the Company’s 90-year history.

Currently, Chris leads the Company’s eight divisions: Administration, Finance, Global Legal Services, Global Marketing and Sales, Human Resources, Information Technology, Operations, and Product Development.

She has a Bachelor’s degree in Mechanical Engineering from the University of Wisconsin-Madison and is the former Chairman of the Industrial Advisory Board for the School of Mechanical Engineering at UW-Madison. Chris recognized Shure as the perfect blend of her two passions (music and engineering) and rejected employment offers from larger manufacturers. While working at Shure, she completed her Master’s degree in Engineering Management from the McCormick School of Engineering at Northwestern University and is currently seated on the Board of Industrial Advisors for that program.

Mary Mazurek

Mary Mazurek is an audio engineer, interdisciplinary artist, educator, and PhD candidate. Her audio broadcasts and recordings are regularly heard on WFMT, Chicago. She has worked with: the European Broadcast Union, cellist Yo-Yo Ma, Lyric Opera of Chicago, Steward Copland of the Police, and Justice Ruth Bader Ginsburg to name a few. She is a practicing media artist whose works have been exhibited in the U.S., Mexico, and Europe. She is also a sought-after educator and is currently writing her Ph.D. dissertation, which concerns developing an epistemology of noise in music and art.

You may also read more about Mary’s journey in this adaptation of a speech she gave on September 12, 2018 at the Recording Academy Task Force On Diversity and Inclusion at the Museum of Contemporary Art in Chicago.

Marina Killion

Marina Killion is an accomplished audio engineer based in Chicago. She is currently the Senior Audio Engineer at Optimus, where she has worked since 2009. She does everything from sound design, dialog editing, Foley, ADR, to final mix. Marina has a background in classical music performance, and studied Sound Recording Technology at DePaul University. She has worked on many notable campaigns such as Chicago Blackhawks, UPS, Reebok, Always, Blue Cross Blue Shield, Invesco, and Olive Garden. She is currently mixing her third feature length independent film, and has previously mixed three documentaries, two web series, a television pilot, and many short films in addition to her commercial projects. Her work has been shown at the Chicago International Film Festival, Chicago Comedy Festival, Midwest Independent Film Festival, and many more. She also won a Silver Addy Award in 2014 for her work with the Eastern Board of Cherokee Indians.

Kate Finan

You all know me!  But, if you don’t, feel free to check out my bio here on our website.

Starting the Conversation

Because I found the panel’s questions to be incredibly thought-provoking, I wanted to share them with all of you so that you might think about your own answers and possibly engage with your peers on this important topic:

What can we do to attract women to the audio profession?

How can we support women in our industry?

What can we do to break down the “good old boy” perception of recording?

Resources

Finally, I am supplying a list of my favorite resources for women in the audio industry or for those who would like to support their female or non-binary peers.  Most of my suggestions are geared toward women in STEM, post-production, or animation since those are the areas in which I work. So please feel free to comment with any of your own suggestions for other areas of the audio industry.  Here they are in no particular order.

And don’t forget to join your professional organizations so that your voice can be heard at the highest levels of our industry!

 

Inspire the Next Generation

Why is it so weird for men to see women working in technical jobs in entertainment? Perhaps it’s the same weirdness as seeing a woman as a plumber or construction worker. Plain ol’ sexism. Beckie Campbell, owner of B4 Media Productions and Orlando Chapter head of SoundGirls, recently returned to Central Florida after being out on tour. We caught up at a local SG Social. Beckie observed that only 1 in 19 venues she visited had a woman in a position of power. Most venues had women working as techs in various positions, which she felt was becoming the norm. What is stopping women from taking the next step into a leadership position?

Women in entertainment have made some amazing headway, Audio Engineering Society announced Nadja Wallaszkovits as their President last year and Christine Schyvinck has been the CEO for Shure since 2016. The accomplishments of these women were based on dedication to their careers and support from their peers. Without that support, many women fall flat when trying to advance.

According to a study of Women On Screen and Behind the Scenes in Television conducted by Dr. Martha Lauzen, “Overall, women accounted for 31% of individuals working in key behind-the- scenes positions. This represents a recent historic high, besting the previous high of 28% set in 2016-17.” The numbers for women working in audio-related positions on the top 250 grossing films of last year were far lower.

 

In other “non-traditional” professions, women still represent a larger portion of the workforce than in entertainment. Forty-five percent of all union members are women, according to the Teamsters Union (2016). Women as construction workers rank only 9.1% (Connley, 2019), and women as truck drivers come in at 6.2% (2018). Schillivia Baptiste emphasizes a strong point, similar to Christine Schyvinck’s keynote presentation at last year’s AVIXA Women’s Council Networking Breakfast.

“I think there is not enough introduction at the elementary and middle school grade age of what young girls can be,” says Baptiste, who links the industry’s scant female workforce to a lack of early exposure. “I think it starts there, and before you get to high school you’re choosing a high school that has something you want to study and then by the time you get to college you’re able to make a decision and say, ‘OK, this is what I want to do ’” (Connley, 2019).

Clearly it starts young. Girls are dressed in pink and boys in blue, and we give our children a predetermined place in life. Most of the women that I’ve met in audio and tech positions across the world have felt they existed outside the expectation that women should be homemakers and nurses, occupations that society accepts as female-appropriate. Empower your daughters, sisters, and nieces so they can have opportunities to learn and research whatever excites them.

Here are some great places to start educated the young women in your lives:

SoundGirls

SoundGirls Women in the Music Industry

Girls in STEM 2020 – NASA

National Girls Collaborative Project 

Girls Rock Camp Alliance

Women In Film Scholarship

References

Connley, Courtney. (2019, January 29). Just 9.1% of America’s construction workers are women—here’s what it’s like to be one of them. CNBC. Retrieved from https://www.cnbc.com/2019/01/28/heres-what-its-like-to-be-a-woman-construction-worker.html.

Connley, Courtney. (2018, June 18). Just 6 percent of America’s truck drivers are women—here’s what it’s like. CNBC. Retrieved from https://www.cnbc.com/2018/06/13/heres-what-its-like-to-be-a-woman-truck-driver.html.

Dr Lauzen, Martha. (2019, September). Boxed In 2018-19: Women On Screen and Behind the Scenes in Television. Center for the Study of Women in Television & Film, San Diego State University.

Women In Unions, By The Numbers. (2016, March 29). Teamsters Union. Retrieved from https://teamster.org/news/2016/03/women-unions-numbers

 

 

Mix With the Masters Scholarships Marcella Araica and Producer Danja

SoundGirls Members have the chance to receive a 1000€ (euro) scholarship provided to SoundGirls members from Mix With The Masters. There are three scholarships available for the week-long session with award-winning engineer Marcella Araica & Producer Danja.

This is a week-long seminar valued at 4,000€ and includes lectures and workshops, accommodation within the mansion, catering (breakfast, lunch, dinner) the fitness room, swimming pool and shuttles from Avignon to the studio.

You must have an advanced understanding of audio and work as producer/mixer/engineer to attend Mix with the Masters.

Session Dates: March 24 -30, 2020

Apply for the scholarships here

Deadline to apply is March 6, 2020

You are responsible for Travel to France and the remainder of the balance to Mix with the Masters.

Session Includes

  • private bedroom, on-site within the mansion for 6 nights
  • Full-board accommodation with meals prepared by gourmet chefs on-site
  • Return shuttle services from Avignon to Studios La Fabrique
  • Unlimited drinks and snacks throughout the week
  • Approximately 50 hours in the studio with the guest speaker
  • One-on-one time between you and the master to assess and work on your own material
  • Professional photography done throughout the week, including portrait shots of you with the Master
  • Hundreds of full-resolution photos shared with you afterward via a download link, to keep and use as you please
  • A certificate of completion issued on behalf of Mix With the Masters and Studios La Fabrique, signed by the Master if you wish
  • Exclusive MWTM merchandise given only to seminar attendees: embossed Moleskine notepads, pens, mugs, t-shirts, USB keys, and stickers.
  • Use of the La Fabrique swimming pool, garden, fitness centre, and scenic walks
  • Nearby access to the enchanting town of St. Rémy de Provence

     Marcella “Ms. Lago” Araica, has swiftly burgeoned into a towering beacon of talent as one of the music industry’s hottest, most prolific sound engineers. Credited for mixing over one hundred chart-topping tunes, Marcella has had the opportunity of working with world-renowned musical icons such as Beyoncé, Britney Spears, Madonna, Nelly Furtado, Usher, Joe Jonas, and Missy Elliot, along with super producers Timbaland, Danja, and Polow Da Don. In just a few short years, this musical mastermind has already accomplished what most strive to achieve in a lifetime.

    Nate “Danja” Hills is one of the most sought after writers and producers in pop music today and is a two-time Grammy Award winner, four-time Grammy nominee and SESAC “Songwriter of the Year” in 2007, 2008 and 2010. Danja boasts a catalog that features twelve #1 Billboard Singles including “SexyBack,” “My Love,” “Lovestoned” and “What Goes Around Comes Around” by Justin Timberlake, “Promiscuous” and “Say It Right” by Nelly Furtado, “Give It to Me” and “The Way I Are” by Timbaland, “Gimme More” by Britney Spears, “4 Minutes” by Madonna, “Sober” by Pink and “Knock You Down” by Keri Hilson. In addition, Danja has written and produced songs for a who’s who of popular music including, among others, 50 Cent, Bjork, Ciara, Diddy, DJ Khaled, Duran Duran, Jennifer Lopez, Jo Jo, Katherine McPhee, Mariah Carey, Rick Ross, Snoop Dogg, T.I., T-Pain and Usher

Program

The process of greatness fostering greatness has long been recognized and is the reason why masterclasses are organized. The Mix With The Master’s seminars is part of this tradition, offering an exchange of in-depth first-hand studio experience and knowledge that is unparalleled and not available anywhere else. Each seminar is conducted by one of the world’s top music mixers and producers, ready to share their professional secrets with a select group of a maximum of 14 carefully-screened, professional-level participants, who come from all over the world.

One factor that contributes to the enormous success of the seminars is that all tutors support the general MWTM ethos, which is about the love of music, music technology and wanting to help others. Participants also are in part selected on displaying similar, positive attitudes. The fact that the seminars last a full week is another major contributory factor because it offers tutors the time and space to go into real depth, and the participants the opportunity to spend a prolonged time watching a master at his peak, and to ask any question they can think of.

The tutors share exclusive, insider-information on any subject: detailed technical knowledge, how to run sessions, how to handle artists, how to manage a career, the right attitude, how to remain successful, and more. The tutors also assess the work of the participants, by listening to their mixes and mixing recording sessions that they bring, and providing extensive feedback to each participant on where they are at, and how they can get to where they want to be. This is invaluable and offers participants wanting to become world-class professionals in their own right a unique advantage.

Another primary factor in making the MWTM seminars exceptional is that they take place at La Fabrique, a large, comfortable, high-end recording studio located in a picturesque historic building, surrounded by huge, lush grounds, and set in the south-east for France in one of the world’s most beautiful environments. The secluded and idyllic location offers the participants and tutors a lot of space to relax and recharge, far away from the hustle and bustle of daily life and the all-demanding intensity of their regular professional environments.

Because the courses are residential, the participants and tutor work, eat, socialize, and sleep in the same environment. While tutors, and participants, will at times opt to retire to their private quarters, there is ample opportunity for social interaction outside of the studio environment. Participants interact extensively with each other and the tutor, making it easier to assimilate the intangible qualities necessary to be successful at the highest level—presence, focus, social skills, intelligence, creativity, the right attitude, and so on.

In short, for seven days participants can experience mixing with a master in both senses of the phrase, mixing and interacting with them. Get more information about Studio La Fabrique

 

 

A Beginners Guide to Wireless Frequencies 

Learning about and using wireless equipment can be overwhelming – there are a lot of differences from traditional gear and rather importantly there are strict rules around using radio frequencies that vary from country to country.

How does wireless equipment work?

 

Wired microphones convert sound into an electrical signal. This is sent through the wire to the sound system. Wireless microphones, however, convert sound into radio signals. This signal is then sent from a transmitter to a receiver which sends it to the sound system. The transmitter is a device that converts the audio signal into a radio signal and broadcasts it through an antenna.

Transmitters are small clip-on packs or in the case of handheld wireless microphones, they are built into the design of the handle. All wireless transmitters generally use a 9-volt battery. The receiver is tuned to receive the radio waves from the transmitter and convert it back into an audio signal. This means that the output of the receiver is just like a traditional wired signal. The balanced audio signal from the receiver output is then connected via an XLR to a typical input in a sound system.

There are a few different kinds of antennae on receivers – single and diversity. Single antenna receivers have one receiving antenna and one tuner but these can be prone to dropping out or getting interruptions in the signal. Diversity receivers, however, perform better as they have two separate antennas and two separate tuners. This means the receiver will automatically choose the best of the two signals, sometimes using a blend of both. This reduces the chance of a drop out because the likelihood is high that one antenna will be receiving a clean signal.

What frequency should I use for my equipment?

This is one of the trickiest areas to cover with wireless equipment because it depends on a lot of factors. Some frequency bands work brilliantly for speech but not for music, and some bands are simply too small to fit in lots of audio channels for a larger group. Some are prone to interference due to being license-free, popular bands and it can be a minefield working out where to begin.

When deciding what band to use, firstly it is good to know that each performer/person that is using wireless in the same location needs to be using a different frequency. It’s good practice to set up the receiver with a blank channel in between or a spacing of 0.25Hz increments on the receiver. Secondly, it’s important to know which spectrum band is suitable and legal to use for your venue – this will depend on the number of wireless devices you’re using, where you are in the world, and if you are moving around or touring with the same equipment. Wireless devices include “low power auxiliary station” equipment such as IEMs, wireless audio instrument links, and wireless cueing equipment, which all have the same rules as wireless microphones. Though not fully extensive, a guide to the available frequency rules of most countries can be found at Frequencies for wireless microphones

There are different areas of the radio frequency spectrum that we are allowed to use for wireless equipment but some are more suitable and better than others, and these are constantly changing, which makes it a hot topic for discussion. It’s useful to remember that the frequency spectrum works in the same way as physical space, in that it has a finite amount of room to be shared. The company Shure has strong concerns, particularly about the ever-decreasing UHF band in the Netherlands and has set up a site to raise awareness at www.losingyourvoice.co.uk

 

The UHF band is the preferred spectrum for wireless equipment however this is getting smaller for wireless use all the time. Ultra-high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one-tenth of a metre (one decimetre).

Most places including the UK and the USA have overhauled their UHF frequency ranges in recent years due to the digitisation of television, freeing up the old analogue frequencies. Originally analogue television transmitted in the 400-800MHz range had been separated into 8MHz “channels” and these refer to a particular frequency range.

Channel 38 is the spectrum of 606.5 – 613.5MHz and is a popular choice in the UK. Governing body Ofcom requires customers to purchase a yearly UHF UK Wireless Microphone Licence to use Channel 38. A flexible license means that owners are allowed to use radio microphone systems in any location. Channel 38 is a shared space and is large enough for 12 radio microphone systems, however, the downside is that if wireless equipment is tuned to the alternative Channel 70 it cannot then return to Channel 38.

Channel 70 is the band of 863 – 865MHz and this is free to use for radio microphone equipment in the UK. This spectrum is so small that it can be difficult to fit many systems into this space. Additionally, if other users nearby are also trying to use this space it can cause interference. Another issue with Channel 70 is that there is no “buffer” range at the lower end as 4G transmission lives immediately below 863MHz which can cause interference.

The band of what used to be Channel 69 (833-862MHz) is illegal to use since its’ digital auctioning in 2013 and it was replaced with Channel 38 for wireless equipment. Because of these challenges, Channel 70 may not be the best solution for larger setups requiring more space.

In the USA there are similar changes coming into place courtesy of the FCC which is the US governing body. The latest changes include the bands 617 – 652 and 663 – 698MHz which will be banned from wireless use as of July 13 2020. The move away from the 600MHz band is due to channels 38-51 in this spectrum being auctioned to television stations. This means that after July 2020 the available frequencies for wireless will include some frequencies on TV channels 2-36 below 608MHz, 614 – 616MHz, 653 – 657MHz, and 657 – 663MHz. Though this may seem like a current transition, this has been in progress for some time – the use of band 698 – 806MHz has been prohibited by the FCC since 2010 as this was repurposed for licensed commercial wireless services and public-safety networks.

What other frequency options am I allowed to use if the UHF range isn’t right for me?

Again, the list of available space is specific to each country, license and equipment tuning limitations however utilising either side of the UHF range can work, with the VHF (very high frequency) spectrum often making a good and practical backup solution.

The VHF band is classed as 30 – 300MHz, with a differentiation given between low and high VHF:

“Low-band VHF range of 49 MHz includes transmission of wireless microphones, cordless phones, radio controlled toys and more. A slightly higher VHF range of 54-72 MHz operates television channels 2-4, as well as wireless systems defined as “assistive listening.” VHF frequencies 76-88 MHz operate channels 5 and 6.

Band III is the name of the range of radio frequencies within the very high frequency (VHF) part of the electromagnetic spectrum from 174 to 240 megahertz (MHz). It is primarily used for radio and television broadcasting. It is also called high-band VHF, in contrast to Bands I and II.”

The Shure website explains the pro points of using the high-band VHF range, saying:

“The high-band VHF range is the most widely used for professional applications, and in which quality wireless microphone systems are available at a variety of prices. In the U.S., the high-band VHF range is divided into two bands available to wireless microphone users. The first band, from 169 – 172 MHz, includes eight specific frequencies designated by the FCC for wireless microphone use by the general public. These frequencies are often referred to as “traveling frequencies,” because they can theoretically be used throughout the U.S. without concern for interference from broadcast television. Legal limits of deviation (up to 12 kHz) allow high-quality audio transmission.”

Other than the UHF and VHF bands, if we look to the higher end of the spectrum the WiFi frequency range at 2.4GHz is another option, however, this also has its limitations due to it being a small shared space and the fact that a lot of WiFi networks in the area can cause interference.

So what does this mean in practical terms to get started?

If you are purchasing new wireless equipment it’s very important to understand its limitations in what frequencies you will be working with at any given venue, and this is multiplied tenfold if you intend to travel with the same equipment. Many modern receivers do not allow the tuning options to change ranges once they have been set – as previously mentioned, the UK channels 38 and 70 cannot be swapped once they have been tuned, and similarly, radio microphones that can tune to Channel 38 will not tune to the “Duplex Gap” of 823 – 832MHz or the shared space of 1785 – 1805MHz. This means that equipment needs have to be very well researched prior to purchasing and that pre-loved second-hand gear will need extra investigation for this reason.

What are the power restrictions for my wireless equipment? 

As a general rule the power must not be in excess of 50 milliwatts when operating in the television bands, and no more than 20 milliwatts when operating in the 600MHz band or the Duplex Gap.

So to recap what questions should I ask first to get setup?

To get started with wireless equipment the key starting questions are:

While it may seem like a lot of questions to ask and elements to consider, most wireless manufacturers will state the capabilities and limitations of their equipment, and keep you up to date with changes that may affect its’ use. With a bit of research and preparation, it’s possible to find wireless equipment to meet a variety of audio needs and budgets, that works within the law and sounds great wherever you may be.

 

More Than Line-by-Line

 

Going Beyond the Basics of Mixing

When I started mixing shows in high school—and I use the term “mixing” loosely—I had no idea what I was doing. Which is normal for anyone’s first foray into a new subject, but the problem was that no one else knew either. My training was our TD basically saying, “here’s the board, plug this cable in here, and that’s the mute button,” before he had to rush off to put out another fire somewhere else.

Back then, there were no Youtube videos showing how other people mixed. No articles describing what a mixer’s job entailed. (Even if there were, I wouldn’t have known what terms to put in a Google search to find them!) So I muddled through show by show, and they sounded good enough that I kept going. From high school to a theme park, college shows to local community theatres, and finally eight years on tour, I’ve picked up a new tip or trick or philosophy every step along the way. After over a decade of trial and error, I’m hoping this post can be a jump start for someone else staring down the faders of a console wondering “okay, now what?”

Every sound design and system has a general set of goals for a musical: all the lines and music are clear and the level is enough to be audible but isn’t painfully loud. These parameters make a basic mix.

For Broadway-style musicals, we do what’s called “line-by-line” mixing. This means when someone is talking, her fader comes up and, when she’s done, her fader goes back down, effectively muting her. For example: if actresses A and B are talking, A’s fader is up for her line, then just before B is about to begin her line, B’s fader comes up and A’s fader goes down (once the first line is finished). So the mixer is constantly working throughout the show, bringing faders up and taking them out as actors start and stop talking. Each of these is called a “pickup” and there will be several hundred of them in most shows. Having only the mics open that are necessary for the immediate dialogue helps to eliminate excess noise from the system and prevent audio waves from multiple mics combining (creating phase cancellation or comb filtering which impairs clarity).

You may have noticed that I’ve only talked about using faders so far, and not mute buttons. Using faders allows you to have more control over the mix because the practice of “mixing” with mute buttons assumes that the actors will say each of their lines in the entire show at the same level, which is not realistic. From belting to whispering and everything in between, actors have a dynamic vocal range and faders are far more conducive than mute buttons to make detailed adjustments in the moment. However, when mixing with faders, you have to make sure that your movements are clean and concise. Constantly doing a slow slide into pickups sounds sloppy and may lose the first part of a line, so faders should be brought up and down quickly. (Unless a slow push is an effect or there is a specific reason for it, yes, there are always exceptions.)

So, throughout the show, the mixer is bringing faders up and down for lines, making small adjustments within lines to make sure that the sound of the show is consistent with the design. Yet, that’s only one part of a musical. The other is, obviously, the music. Here the same rules apply. Usually, the band or orchestra is assigned to VCAs or grouped so it’s controlled by one or two faders. When they’re not playing, the faders should be down, and when they are, the mixer is making adjustments with the faders to make sure they stay at the correct level.

The thing to remember at this point is that all these things are happening at the same time. You’re mixing line by line, balancing actor levels with the music, making sure everything stays in an audible, but not eardrum-ripping range. This is the point where you’ve achieved the basic mechanics and can produce an adequate mix. When put into action, it looks something like this:

 

 

A clip from a mix training video for the 2019 National Touring Company of Miss Saigon.

 

But we want more than just an adequate mix, and with a solid foundation under your belt, you can start to focus on the details and subtleties that will continue to improve those skills. Now, full disclosure, I was a complete nerd when I was young (I say that like I’m not now…) and I spent the better part of my childhood reading any book I could get my hands on. As an adult, that has translated into one of my greatest strengths as a mixer: I get stories. Understanding the narrative and emotions of a scene are what help me make intelligent choices of how to manipulate the sound of a show to best convey the story.

Sometimes it’s leaving an actress’s mic up for an ad-lib that has become a routine, or conversely, taking a mic out quicker because that ad-lib pulls your attention from more important information. It could be fading in or out a mic so that an entrance or exit sounds more natural or giving a punchline just a bit of a push to make sure that the audience hears it clearly.

Throughout the entire show, you are using your judgment to shape the sound. Paying attention to what’s going on and the choices the actors are making will help you match the emotion of a scene. Ominous fury and unadulterated rage are both anger. A low chuckle and an earsplitting cackle are both laughs. However, each one sounds completely different. As the mixer, you can give the orchestra an extra push as they swell into an emotional moment, or support an actress enough so that her whisper is audible through the entire house but doesn’t lose its intimacy.

Currently, I’m touring with Mean Girls, and towards the end of the show, Ms. Norbury (the Tina Fey character for those familiar with the movie) gets to cut loose and belt out a solo. Usually, this gets some appreciative cheers from the audience because it’s Norbury’s first time singing and she gets to just GO for it. As the mixer, I help her along by giving her an extra nudge on the fader, but I also give some assistance beforehand. The main character, Cady, sings right before her in a softer, contemplative moment and I keep her mic back just a bit. You can still hear her clearly, but she’s on the quieter side, which gives Norbury an additional edge when she comes in, contrasting Cady’s lyrics with a powerful belt.

Another of my favorite mixing moments is from the Les Mis tour I was on a couple of years ago. During “Empty Chairs at Empty Tables,” Marius is surrounded by the ghosts of his friends who toast him with flickering candles while he mourns their seemingly pointless deaths. The song’s climax comes on the line “Oh my friends, my friends, don’t ask me—” where three things happen at once: the orchestra hits the crest of their crescendo, Marius bites out the sibilant “sk” of “don’t aSK me,” and the student revolutionaries blow out their candles, turning to leave him for good. It’s a stunning visual on its own, but with a little help from the mixer to push into both the orchestral and vocal build, it’s a powerful aural moment as well.

The final and most important part of any mix is: listening. It’s ironic—but maybe unsurprising—that we constantly have to remind ourselves to do the most basic aspect of our job amidst the chaos of all the mechanics. A mix can be technically perfect and still lack heart. It can catch every detail and, in doing so, lose the original story in a sea of noise. It’s a fine line to walk and everyone (and I mean everyone) has an opinion about sound. So, as you hit every pickup, balance everything together, and facilitate the emotions of a scene, make sure you listen to how everything comes together. Pull back the trumpet that decided to go too loud and proud today and is sticking out of the mix. Give the actress who’s getting buried a little push to get her out over the orchestra. When the song reaches its last note and there’s nothing you need to do to help it along, step back and let it resolve.

Combining all these elements should give you a head start on a mix that not only achieves the basic goals of sound design but goes above and beyond to help tell the story. Trust your ears, listen to your designer, and have fun mixing!

There Really Is No Such Thing As A Free Lunch

Using The Scientific Method in Assessment of System Optimization

A couple of years ago, I took a class for the first time from Jamie Anderson at Rational Acoustics where he said something that has stuck with me ever since. He said something to the effect of our job as system engineers is to make it sound the same everywhere, and it is the job of the mix engineer to make it sound “good” or “bad”.

The reality in the world of live sound is that there are many variables stacked up against us. A scenic element being in the way of speaker coverage, a client that does not want to see a speaker in the first place, a speaker that has done one too many gigs and decides that today is the day for one driver to die during load-in or any other myriad of things that can stand in the way of the ultimate goal: a verified, calibrated sound system.

The Challenges Of Reality

 

One distinction that must be made before beginning the discussion of system optimization is that we must draw a line here and make all intentions clear: what is our role at this gig? Are you just performing the tasks of the systems engineer? Are you the systems engineer and FOH mix engineer? Are you the tour manager as well and work directly with the artist’s manager? Why does this matter, you may ask? The fact of the matter is that when it comes down to making final evaluations on the system, there are going to be executive decisions that will need to be made, especially in moments of triage. Having clearly defined what one’s role at the gig is will help in making these decisions when the clock is ticking away.

So in this context, we are going to discuss the decisions of system optimization from the point of the systems engineer. We have decided that the most important task of our gig is to make sure that everyone in the audience is having the same show as the person mixing at front-of-house. I’ve always thought of this as a comparison to a painter and a blank canvas. It is the mix engineer’s job to paint the picture for the audience to hear, it is our job as system engineers to make sure the painting sounds the same every day by providing the same blank canvas.

The scientific method teaches the concept of control with independent and dependent variables. We have an objective that we wish to achieve, we assess our variables in each scenario to come up with a hypothesis of what we believe will happen. Then we execute a procedure, controlling the variables we can, and analyze the results given the tools at hand to draw conclusions and determine whether we have achieved our objective. Recall that an independent variable is a factor that remains the same in an experiment, while a dependent variable is the component that you manipulate and observe the results. In the production world, these terms can have a variety of implications. It is an unfortunate, commonly held belief that system optimization starts at the EQ stage when really there are so many steps before that. If there is a column in front of a hang of speakers, no EQ in the world is going to make them sound like they are not shadowed behind a column.

Now everybody take a deep breath in and say, “EQ is not the solution to a mechanical problem.” And breathe out…

Let’s start with preproduction. It is time to assess our first round of variables. What are the limitations of the venue? Trim height? Rigging limitations? What are the limitations proposed by the client? Maybe there is another element to the show that necessitates the PA being placed in a certain position over another; maybe the client doesn’t want to see speakers at all. We must ask our technical brains and our career paths in each scenario, what can we change and what can we not change? Note that it will not always be the same in every circumstance. In one scenario, we may be able to convince the client to let us put the PA anywhere we want, making it a dependent variable. In another situation, for the sake of our gig, we must accept that the PA will not move or that the low steel of the roof is a bleak 35 feet in the air, and thus we face an independent variable.

The many steps of system optimization that lie before EQ

 

After assessing these first sets of variables, we can now move into the next phase and look at our system design. Again, say it with me, “EQ is not the solution to a mechanical problem.” We must assess our variables again in this next phase of the optimization process. We have been given the technical rider of the venue that we are going to be at and maybe due to budgetary restraints we cannot change the PA: independent variable. Perhaps we are carrying our own PA and thus have control over the design with limitations from the venue: dependent variable forms, but with caveats. Let’s look deeper into this particular scenario and ask ourselves: as engineers building our design, what do we have control over now?

The first step lies in what speaker we choose for the job. Given the ultimate design control scenario where we get the luxury to pick and choose the loudspeakers we get to use in our design, different directivity designs will lend themselves better in one scenario versus another. A point source has just as much validity as the deployment of a line array depending on the situation. For a small audience of 150 people with a jazz band, a point source speaker over a sub may be more valid than showing up with a 12 box line array that necessitates a rigging call to fly from the ceiling. But even in this scenario, there are caveats in our delicate weighing of variables. Where are those 150 people going to be? Are we in a ballroom or a theater? Even the evaluation of our choices on what box to choose for a design are as varied as deciding what type of canvas we wish to use for the mix engineer’s painting.

So let’s create a scenario: let’s say we are doing an arena show and the design has been established with a set number of boxes for daily deployment with an agreed-upon design by the production team. Even the design is pretty much cut and paste in terms of rigging points, but we have varying limitations to trim height due to high and low steel of the venue. What variables do we now have control over? We still have a decent amount of control over trim height up to a (literal) limit of the motor, but we also have control over the vertical directivity of our (let’s make the design decision for the purpose of discussion) line array. There is a hidden assumption here that is often under-represented when talking about system designs.

A friend and colleague of mine, Sully (Chris) Sullivan once pointed out to me that the hidden design assumption that we often make as system engineers, but don’t necessarily acknowledge, is that we assume that the loudspeaker manufacturer has actually achieved the horizontal coverage dictated by technical specifications. This made me reconsider the things I take for granted in a given system. In our design, we choose to use Manufacturer X’s 120-degree line source element. They have established in their technical specs that there is a measurable point at 60 degrees off-axis (total 120-degree coverage) where the polar response drops 6 dB. We can take our measurement microphone and check that the response is what we think it is, but if it isn’t what really are our options? Perhaps we have a manufacturer defect or a blown driver somewhere, but unless we change the physical parameters of the loudspeaker, this is a variable that we put in the trust of the manufacturers. So what do we have control over? He pointed out to me that our decision choices lie in the manipulation of the vertical.

Entire books and papers can and have been written about how we can control the vertical coverage of our loudspeaker arrays, but certain factors remain consistent throughout. Inter-element angles, or splay angles, let us control the summation of elements within an array. Site angle and trim height let us control the geometric relationship of the source to the audience and thus affect the spread of SPL over distance. Azimuth also gives us geometric control of the directivity pattern of the entire array along a horizontal dispersion pattern. Note that this is a distinction from the horizontal pattern control of the frequency response radiating from the enclosure, of which we have handed responsibility over to the manufacturer. Fortunately, the myriad of loudspeaker prediction software available from modern manufacturers has given the modern system engineer an unprecedented level of ability to assess these parameters before a single speaker goes up into the air.

At this point, we have made a lot of decisions on the design of our system and weighed the variables along every step of the way to draw out our procedure for the system deployment. It is now time to analyze our results and verify that what we thought was going to happen did or did not happen. Here we introduce our tools to verify our procedure in a two step-process of mechanical then acoustical verification. First, we use tools such as protractors and laser inclinometers as a means of collecting data to assess whether we have achieved our mechanical design goal. For example, our model says we need a site angle of 2 degrees to achieve this result so we verify with the laser inclinometer that we got there. Once we have assessed that we made our design’s mechanical goals, we must analyze the acoustical results.

Laser inclinometers are just one example of a tool we can use to verify the mechanical actualization of a design

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It is here only at this stage that we are finally introducing the examination software to analyze the response of our system. After examining our role at the gig, the criteria involved in pre-production, choosing design elements appropriate for the task, and verifying their deployment, only now can move into the realm of analysis software to see if all those goals were met. We can utilize dual-channel measurement software to take transfer functions at different stages of the input and output of our system to verify that our design goals have been met, but more importantly to see if they have not been met and why. This is where our ability to critically interpret the data comes in to play. By evaluating impulse response data, dual-channel FFT (Fast-Fourier Transform) functions, and the coherence of our gathered data we can make an assessment of how our design has been achieved in the acoustical and electronic realm.

What’s interesting to me is that often the discussion of system optimization starts here. In fact, as we have seen, the process begins as early as the pre-production stage when talking with different departments and the client, and even when asking ourselves what our role is at the gig. The final analysis of any design comes down to the tool that we always carry with us: our ears. Our ears are the final arbiters after our evaluation of acoustical and mechanical variables, and are used along every step of our design path along with our trusty use of  “common sense.” In the end, our careful assessment of variables leads us to utilize the power of the scientific method to make educated decisions to work towards our end goal: the blank canvas, ready to be painted.

Big thanks to the following for letting me reference them in this article: Jamie Anderson at Rational Acoustics, Sully (Chris) Sullivan, and Alignarray (www.alignarray.com)

New Decade – New Year

The New Year and a new decade have begun! Thoughts of reinvention and feelings of excitement fill the air. This time of the year can often feel overwhelming. For me, I am in between apartments, jobs, and I just finished up my bachelor’s and am headed into a master’s program. Life has been a roller coaster.

It is no secret that the audio and music industry can be challenging, but as a young woman, I have definitely been feeling the pressure to find work and be successful. Something I am sure we all feel. There has also been a lot of talk amongst my friends and peers about depression and seasonal depression. It seems to flourish in the cold, dark months. I myself have been struggling with it. I wanted to do something proactive to combat these negative thoughts and emotions and to welcome in the New Year in a positive way. So I looked to my community for support and ideas.

Now, one thing you may not know about me is that I am the founder of the Michigan Technological University SoundGirls chapter. It is something I am incredibly proud of and sad to have moved away from. It’s okay though, I left it in good hands.

A few weeks ago, I emailed some of the members of this organization and asked them to fill out a short set of interview questions. Many of these young women I consider my family, if not friends. One response in particular not only brought me joy, but hope for a brighter future for all of us in this amazing, yet challenging industry.

Izzy Waldie is a first-year Audio Production major and the newly elected secretary of the Michigan Tech SoundGirls chapter. She is not only incredibly creative but also very good at STEM classes. Something I have to admit, I am not good at. Because she is still in her first year, I asked Izzy a few ice breaker questions.

Sarah: “So Izzy, what are you excited for or looking forward to in your time here at Michigan Tech in the visual performing arts department?”

Izzy: “I’m just really looking forward to doing more projects with people, and making stuff I’m really proud of.”

When asked about the university chapter specifically, she responded with;

Izzy: “Next semester I really want to do some creative projects with SoundGirls. We will be finishing up our movie project which will be really cool, but I want to do more projects. I was thinking of maybe just us recording a song. Nothing fancy, it could be just for fun, and we could do it with all the musicians in the organization. Now that I’m on the management board I really want to help head up some of these projects.”

When I was in my first year at Michigan Tech, I was one of two female students out of the two audio programs. Now, those numbers have been multiplied by at least five. The fact that there is an organization where students can go, create things together, learn and refine their skills, all while being supportive of each other, makes my heart melt. It reminds me that life isn’t always a challenge. Their excitement makes me excited.

Sarah: “Recently you said you don’t know what you are doing and I wanted to talk to you a little bit more about that. It is my opinion that you don’t need to know exactly what you are doing and it is more important to know what you don’t want to do. By exploring different areas and avenues, you are figuring out what you are doing or at least what you want to do. What are some things that you are exploring, interested in, or new things you might want to try out?”

Izzy: “I’ve definitely realized that what you already know isn’t as important as how willing you are to learn. I still don’t know what I’m doing, no one ever knows 100% what they’re doing, but I definitely have learned a lot this semester. I’ve seen this the most working at the Rozsa (The Rosza Performing Arts Center), I had basically no experience at first, but now I’m working the sound and lighting boards pretty confidently. One thing I really want to get more into is recording. I’ve helped out with some other people’s projects and would like to work more creatively with it.”

Izzy made the observation that most students might overlook. What you already know isn’t as important as how willing you are to learn. Not only was she a student in the organization I was president of, but I was also a teaching assistant for one of her classes. This statement is a testament to how she is as a student and how she approaches learning situations. It is an excellent characteristic to have for the industry that she is headed into.

I was feeling revitalized by the end of our conversation. I had received new hope, excitement, and appreciation from talking with Izzy. To finish out the conversation I asked her something a little more personal.

Sarah: “Tell me something good that happened this semester in our department that you will remember for a while, that makes you smile?”

Izzy: “This semester was awesome. Never did I think I’d be so involved as a first-semester student. One of the best parts for me was working on the haunted mine. (A project that the visual performing arts department collaborates with the Quincy Mine owner on every Halloween). We were down there for a really long time but the idea was really cool and so were the people. I also really liked working in the different groups on the audio movie project. I made a lot of friends while working on this project and our Dr. Seuss The Lorax audio movie ended up being pretty fun to make. I remember one time, at like midnight a bunch of us were in Walker Film Studio working on one of the audio movies while passing around a 2-liter of Dr. Pepper.

Izzy’s responses were wholesome and honest. To me, she has a perspective that exceeds her age. It was a nice reminder when faced with the daunting challenges of moving to a new area, finding work, and starting anew. It was a reminder of why I chose this career field. I chose it for the exciting new projects, learning new things, and working late into the night with people you hardly know, but will soon feel like family to you.

Though our conversation had ended, I was feeling myself again and that was because of the connections and relationships I had made through our little SoundGirls chapter. At the core of SoundGirls, you will find this kind of understanding from its members. We are here to listen to one another, remind each other of why we are here and doing what we love, and create an environment that welcomes all who are seeking opportunities and support. I wish you all a prosperous and happy New Year.

 

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