News
News Update
Sound Masking
Sound Advice: Do Computers Have Ears?
Computer software can help alleviate the more repetitive aspects of line array optimization, but the process remains largely trial and error.
By Peter Mapp, FASA, FAES

Published April 2014 |
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Sound Masking
Glass + Audio Challenge
Torrence Sound of Ohio had more than a few challenges to overcome in order to bring a high quality sound solution to the Toledo Museum of Art’s glass-ceilinged Great Gallery.
By Dawn Allcot

Published March 2014 |
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Sound Masking
The Acoustic Wave Conclusion
This follow-up to our November 2013 feature, “The Acoustic Wave,” examines the audio solutions of Arena Thun in Thun, Switzerland, and Maracanã Stadium in Rio de Janiero, Brazil, both excellent case studies on optimizing speech intelligibility in stadiums.
By Renato Cipriano & Dirk Noy

Published March 2014 |
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Sound Masking
Sound System Optimization
Achieving automated audio optimization using digitally steered line arrays and Martin Audio’s MLA software.
By Peter Mapp, FASA, FAES

Published March 2014 |
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Sound Masking
The New Workplace
Significant changes have come to the look, feel and sound of the contemporary workplace. Not only have physical aspects changed, but the way we interact with our space and everything within it has changed, also.
By Christopher J. Pollock, PE CTS, LEED AP BD+C

Published Febuary 2014 |
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Sound Masking
Optimizing Communication
Active acoustic technology is seamlessly transforming lecture halls into concert halls, cinemas into classrooms, and back again.
By Steve Ellison & Pierre Germain

Published Febuary 2014 |
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Sound Masking
Sound Advice: Earsay
An extension of the theory: I6M2. It is important to know the approximate answer to the calculation before you do it.
By Peter Mapp, FASA, FAES

Published Febuary 2014 |
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Sound Masking
Sound Advice
An extension of the theory: I6M2. It is important to know the approximate answer to the calculation before you do it.
By Peter Mapp, FASA, FAES

Published January 2014 |
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Sound Masking
Sound Masking In Closed Spaces
In recent years, there have been tremendous advances in sound masking technology, increasing performance, expanding functionality and opening the door to new applications.
By Niklas Moeller, MBA

Published December 2013 |
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PA System Microphones
Sound Advice: Word For Word
The second half of the requirements for achieving good intelligibility when designing or installing a sound system.
By Peter Mapp, FASA, FAES

Published November 2013 |
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PA System Microphones
Sound Advice: Word For Word
The seven deadly sins to avoid in order to achieve an intelligible sound system.
By Peter Mapp, FASA, FAES

Published October 2013 |
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PA System Microphones
Acoustical Architecture Or Architectural Acoustics
Whether you refer to it as acoustical architecture or architectural acoustics, the fact is that architecture and acoustics are both required for a successful design.
By Dr. Peter D'Antonio, PhD

Published September 2013 |
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PA System Microphones
How Green Are Your dBs?
Does the efficiency of an amplifier really matter? Does it really save enough energy to make it worth considering? Energy efficiency of AV systems is becoming a mainstream requirement.
By Peter Mapp, FASA, FAES

Published September 2013 |
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PA System Microphones
PA System Microphones
The differences in PA systems throughout airports are wide, resulting in many announcement outcomes.
By Peter Mapp, FASA, FAES

Published August 2013 |
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Sound Advice
Sound Advice: Can We Prescribe High Quality Sound?
Sometimes objective measures are tdhe way forward, but there is no single foolproof acoustic metric.
By Peter Mapp, FASA, FAES

Published July 2013 |
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Listening
Assistive Listening And ADA Compliance
Assistive listening systems provide an enhanced personal audio experience for those who might need some extra assistance in hearing due to hearing loss or the ambient acoustic environment.
By Cory Schaeffer

Published June 2013 |
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Echology!
Sound Advice: Should Classical Concerts Be Amplified?
London's Royal Albert Hall prompts a discussion about amplification, reinforcement and acoustics in multipurpose venues.
By Peter Mapp FASA, FAES

Published June 2013 |
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Echology!
Sound Advice: Echology!
Just because you have the program, doesn't mean you know what it is telling you or how to interpret the results.
By Peter Mapp FASA, FAES

Published May 2013 |
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Who Am I To Judge?
Sound Advice: 'Who Am I To Judge?'
Measuring and quantifying the performance of a sound system is not straightforward, and finesse and tact with the client is key.
By Peter Mapp FASA, FAES

Published April 2013 |
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Sound Advice
Sound Advice: Lies, Damn Lies & Statistical Acoustics
Unless you understand the fundamentals of what it is you are doing and the underlying acoustics, there is a good chance you may get it wrong.
By Peter Mapp FASA, FAES

Published March 2013 |
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Reference Levels
The Commish: Reference Levels
Despite the fact that you can get a typical conference room in good shape in a matter of minutes with current DSP units, you must apply test equipment and discipline to get the room to sound great.
By James Maltese, CTS-D, CTS-I, CQT

Published February 2013 |
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Sound Advice
Sound Advice: Measure For Measure
With many acoustic and even electrical measurements, it may not be at all obvious that there is/was a measurement error.
By Peter Mapp FASA, FAES.

By Peter Mapp,FASA, FAES

Published February 2013 |
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Intelligibility
Sound Advice: Intelligibility (Conclusion)
Life safety standards around the world are slowly converging, with Europe leading the way. Now is the time to get to grips with STI and get the measure of it.
By Peter Mapp,FASA, FAES

Published December 2012 |
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Modernized Silence
Modernized Silence
ithout sound masking, many facilities suffer from inadequate ambient levels, leaving occupants to deal with the fallout: poor speech privacy and frequent disruptions. When...
By Niklas Moeller

Published December 2012 |
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Intelligibility
Intelligibility
The Speech Transmission Index (STI) has been adopted by standards and organizations that want a precisely defined measurement and scale. What is STI, how do we measure it—and is it foolproof?
By Peter Mapp,FASA, FAES

Published November 2012 |
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Dining At 96dB
Dining At 96dB
Escalating noise levels common in many restaurants have become a hot-button issue.
By Pierre Germain

Published October 2012 |
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Intelligibility
Intelligibility
A complex discussion related to the new IEC standard, 60268-16 Edition 4.
By Peter Mapp, FASA, FAES

Published October 2012 |
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Olympian Acoustics
Olympian Acoustics
The noise level inside some of the Olympic venues was reported to be "deafening" by many of the spectators and crew. Without much, if any, sound absorption, the levels could be considered dangerous.
By Peter Mapp, FASA, FAES

Published September 2012 |
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Food For Thought!
Food For Thought!
Simple steps to account for poor room acoustics and control noise in busy, crowded settings, like a Las Vegas restaurant.
By Peter Mapp FASA, FAES

Published August 2012 |
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Signal To Noise
Signal To Noise
A good signal to noise ratio increases intelligibility and ensures that audiences hear the intended audio without any inherent "hiss" in the system.
By James Maltese, CTS-D, CTS-I, CQT

Published August 2012 |
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Audio, AV or Aud-IT Engineering
Line Dancing
Although line arrays date back 70 years, future installations require a look at more than just reverberation.
By Peter Mapp, FASA, FAES

Published July 2012 |
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Audio, AV or Aud-IT Engineering
Audio, AV or Aud-IT Engineering
Audio engineers need to understand how to build and use computer networks and associated computer technology as a matter of course.
By Peter Mapp, FASA, FAES

Published June 2012 |
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 Gain Structure
Gain Structure
Properly setting microphone gains with standard talker levels can alleviate problems with a DSP mixer, and technicians must use test equipment to do so.
By James Maltese, CTS-D, CTS-I, CQT

Published June 2012 |
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Speaker Design & Manufacturing Best Practices
Speaker Design & Manufacturing Best Practices
Knowing what goes into speaker design and manufacturing can help when designing systems.
and complex floor plan.

By Steve Tatarunis & Dan Digre

Published May 2012 |
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Cathedral Of St. Joseph's Rebirth
Cathedral Of St. Josephs's Rebrith
Cathedral of St. Joseph hired Monte Bros. Sound Systems to create a sound system for its wide range of worship services
and complex floor plan.

By Jim Stokes

Published April 2012 |
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App-endix
App-endix
Three primary causes for an inaccurate calibration on a smartphone acoustic measurement App: calibration, the non flat frequency response of the device's internal microphone and operator error.
By Peter Mapp, FASA, FAES

Published March 2012 |
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Golden Ears
Golden Ears
John Mayberry introduced us to "Silver Ears" in our October issue, where he mentioned "there appears to be roughly one true Golden Ear out of a hundred pretenders." Here, he speaks with one of the real ones.
By John Mayberry

Published March 2012 |
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Apps & Missapps
Apps & Missapps
The ever expanding technology of apps for the iPad and iPod presents new questions.
By Peter Mapp, FASA, FAES

Published February 2012 |
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Weaponizing Audio
Weaponizing Audio
Audio systems are increasingly being misused as weapons, and the argument that integrators aren't accomplices doesn't hold water anymore.
By John Mayberry

Published February 2012 |
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Are we there yet?
Are We There Yet?
Audio networking over Ethernet has raised a lot of questions. The author addresses questions plaguing systems integrators, design consultants and engineers.
By Tim Shuttleworth

Published January 2012 |
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App-res-vous: Audio apps: tools or toys?
App-res-vous
Measurement and informational audio "apps" for the smart phones (iPhone and Android) provide industry professionals tools at their fingertips.
By Martin Palicki

Published January 2012 |
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Sorry About The Delay
Acoustic Myths And Magic Part 2
Many myths and misconceptions plague the AV industry:
what to look for and what to look out for...

By Peter Mapp, FASA, FAES

Published December 2011 |
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Sorry About The Delay
Some Acoustic Myths And Magic
A collection of misconceptions, half truths and incorrect statements when sorting out sound systems comes from installers, operators and manufacturers...
By Peter Mapp, FASA, FAES

Published November 2011 |
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Sorry About The Delay
Sorry About The Delay!
As we all know, there is no such thing as a free lunch; to put that another way, you do not get something for nothing...
By Peter Mapp, FASA, FAES

Published October 2011 |
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Anatomy Of A Vegas Club: Gallery
Silver Ears
There are a couple of topics I've avoided writing about for 20 years now. One is the so-called "Silver Ear" listener and the angst he brings upon our industry.
By John Mayberry

Published October 2011 |
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Anatomy Of A Vegas Club: Gallery
Anatomy Of A Vegas Club: Gallery
Vegas dance clubs have a short shelf life, but R2W helped Gallery in the Planet Hollywood Hotel get up to speed with big sound and subtle lighting.
By Dan Daley

Published September 2011 |
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Who's in Control?
Who Stole My dBs?

When sound pressure levels are much less than expected, calculations and quick thinking create a better platform from
which to work.

By Peter Mapp, FASA, FAES
Published September 2011 |
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Who’s in Control?
Who’s In Control?

Using sophisticated technology works if it enables a better system to be provided, but it shouldn’t get in the way of the system and operation.
By Peter Mapp, FASA, FAES

P
ublished August 2011 | Read More...
Communications
Communications
Although you can make an argument that communications can be made without it, no matter how striking or haunting your presentation may be, it won’t cut it without sound.
By John Mayberry

P
ublished August 2011 | Read More...
Building Back
It’s Time To Take The Building Back

For the sound masking market, it’s been a long, circuitous route working with sound contractors/integrators and AV, but it’s back, with new, advanced technologies.
By Jonathan Leonard

Published August 2011 | Read More...
Measuring Audio Signals and Voltages, Part 3
Measuring Audio Signals and Voltages, Part 3

While it is difficult to measure fluctuating signals, determining the various voltage points of a sound system is essential.
By Peter Mapp, FASA, FAES

Published July 2011 |
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Measureing Audio Singals & Voltages
Measuring Audio Signals & Voltages

Last month, I looked at the accuracy of rms voltmeters and came up with some surprising answers. I started out by wondering how a new digital meter would cope with measuring real audio signals. Knowing its basic measurement limits, it was time to try it...
By Peter Mapp, FASA, FAES

Published May 2011 |
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VOLTS
Are Your Volts The Same As My Volts?

The other day, I bought an inexpensive digital multi meter for my site kit bag. I have several digital volt meters, ranging from the "throw away after one use" to one that is stored in a time-locked safe and is only allowed to be used on high holy days and when...
By Peter Mapp, FASA, FAES

Published April 2011 |
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Test, Testing
On The Level

Last month, Peter Mapp set out some of the issues he had encountered with a railway station PA system. This time, he delves further into the problems afflicting the system and how a solution was found.
By Peter Mapp, FASA, FAES

Published March 2011 |
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Test, Testing
On The Level

A while ago, I was called in to look at a PA system with a problem...well, several problems actually, but the one I want to talk about at the moment...

Published February 2011 |
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Test, Testing
The FCC's Measured & Practical Approach

This year, the FCC made two significant rulings, both demonstrating a practical approach to some complex issues by balancing the needs of those...

Published January 2011 |
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Test, Testing
What’s In Your Test Kit?

I often am asked by integrators and installers what test equipment I use and what gear they should have. These two questions do not necessarily have the same answers, although...

Published December 2010 |
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Test, Testing
In The Loop

Momentum is accelerating toward a new world of assistive listening for Americans with hearing loss. We refer to the mushrooming support for induction loops...

Published November 2010 |
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Test, Testing
Audio standards?

Every year, more and more new standards appear relating to audio systems, and I have wondered often why we need so many and why so many more keep on appearing. In the current...

Published November 2010 |

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Test, Testing
testing, testing: which signal when?

Over the last couple of months, I have predominantly
looked at “noise” and...


Published October 2010

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Test, Testing
Testing, testing: Part 3

Over the last couple of months, I have predominantly
looked at “noise” and...


Published September 2010 |
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Test, Testing
Testing, testing: what's all the noise about?

Today, we have a wide variety of test signals available to us for checking, testing and tuning sound systems, but...

Published August 2010 |
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Getting a foot on the ladder

I am writing this at 36,000 feet, somewhere over the Mediterranean on the way back from a business trip to the Middle East.

Published June 2010 |
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Active acoustics in the education

Not long ago, I sat in my daughter’s high school auditorium, prepared for the long haul of the Spring concert...

Published May 2010 |
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Great acoustics: pity about the sound

Although most of my work relates to sound systems, I also spend a significant amount of my time working on room acoustics.

Published May 2010 |
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Idiots with meters and idiot meters

As audio engineers, almost every day we have to measure something, be it a background acoustic noise level, the frequency response of a sound system...

Published April 2010 |
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Sound quality CONCLUSION

In the previous parts of this discussion about sound quality [December 2009, January and February 2010], I have looked at some of the effects of frequency and temporal distortion.

Published March 2010 |
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Sound quality PART 3

Last month, I looked at some of the effects that frequency response and frequency distortion have on sound quality.

Published February 2010 |
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Sound quality PART 2

In Part 1 last month, I introduced the concept of sound quality and some of the potential components that are related to it.

Published January 2010 |
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Sound quality PART 1

I do not know how many specifications have crossed my desk that said that the sound system or audio has to be of a high quality.

Published December 2009 |
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Education

I have been meaning to raise the topic of audio
education for awhile.


Published November 2009 |
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On the level

For more than 40 years, the weighted sound level, or dBA, has been the universal measure for assessing sound levels. But why dBA?

Published October 2009 |
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Do architects hate good sound?

A young colleague of mine recently asked, “Why do architects hate good sound?

Published September 2009 |
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Hearing MattersHearing matters

Traveling over to InfoComm, I enjoyed(?) a nine-hour flight. After awhile, boredom set in and, because it was the middle of the day, I didn't particularly feel like sleeping.

Published August 2009 |
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Polar explorations (CONCLUSION)

In Part 1 of this two-part review last month, I showed that there is more to loudspeaker coverage than beamwidth diagrams and directivity plots.

Published July 2009 |
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SPOTLIGHT OF SOUND

As retail marketing evolves and becomes increasingly competitive, marketers continue to search for new ways to capture and guide the attention of their customers.

Published July 2009 |
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