Sound Advice: 'Who Am I To Judge?' Role reversal in evaluating worship sound. 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
Sound Advice: Lies, Damn Lies & Statistical Acoustics Are you only getting half the picture? 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
The Commish: Reference Levels Give me zero on everything. 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
Sound Advice: Measure For Measure The art of mismeasurement. 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
Sound Advice: Intelligibility (Conclusion) Getting the Measure of STI. 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
Modernized Silence Tailoring sound masking for each environment. 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
Intelligibility Can we really measure it? PART 2 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
Olympian Acoustics A different side of the Olympic Games. 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
Food For Thought! How room acoustics affect our everyday lives & systems design. 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
Signal To Noise Guessing is not an option. 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
Audio, AV or Aud-IT Engineering Is there a future for 'audio only' engineers? 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
Gain Structure 'Playing it by ear' is not an option. 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
Speaker Design & Manufacturing Best Practices Proper implementation is based on understanding processes. Knowing what goes into speaker design and manufacturing can help when designing systems.
and complex floor plan. By Steve Tatarunis & Dan Digre
Cathedral Of St. Josephs's Rebrith Systems comprise Monte Bros.' 'most complex ever.' 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
App-endix Additional background about smartphone measurement Apps. 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
Golden Ears Disney's Kurt Kinzel details 'natural sound.' 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
Weaponizing Audio 'Turning more tables' isn't a good reason. Audio systems are increasingly being misused as weapons, and the argument that integrators aren't accomplices doesn't hold water anymore. By John Mayberry
Are We There Yet? Audio networking over Ethernet in 2012. Audio networking over Ethernet has raised a lot of questions. The author addresses questions plaguing systems integrators, design consultants and engineers. By Tim Shuttleworth
Acoustic Myths And Magic Part 2 Continue not believing everything you hear or what you are told. Many myths and misconceptions plague the AV industry:
what to look for and what to look out for... By Peter Mapp, FASA, FAES
Some Acoustic Myths And Magic Don't believe everything you hear. Part 1 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
Sorry About The Delay! Big sound, subtle lighting make The Strip's latest entry a winner. 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
Silver Ears It is angst with 99 out of 100. 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
Anatomy Of A Vegas Club: Gallery Big sound, subtle lighting make The Strip's latest entry a winner. 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
Who Stole My dBs? A saga of lower than expected sound pressure levels.. 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
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Who’s In Control? The ergonomics of sound system designs. 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
Video without sound is… 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
It’s Time To Take The Building Back Sound masking: a tipping point for AV. 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
Measuring Audio Signals and Voltages, Part 3 Audio Signals and Voltage Distribution Essentials. While it is difficult to measure fluctuating signals, determining the various voltage points of a sound system is essential. By Peter Mapp, FASA, FAES
Measuring Audio Signals & Voltages Converting your voltmeter into a random number generator. Pt. 2 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
Are Your Volts The Same As My Volts? Measuring audio signals and voltages. Part 1 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
On The Level A saga of mixed loudspeakers and input levels. Part 2 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
On The Level A saga of mixed loudspeakers and input levels. Part 1 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...
The FCC's Measured & Practical Approach A review of policy changes that affect wireless. This year, the FCC made two significant rulings, both demonstrating a practical approach to some complex issues by balancing the needs of those...
What’s In Your Test Kit? Essential test equipment for sound contractors and installers. 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...
In The Loop Helping the growing population with hearing loss. Momentum is accelerating toward a new world of assistive listening for Americans with hearing loss. We refer to the mushrooming support for induction loops...
Audio standards? Are they a help or hindrance? 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...
Active acoustics in the education For optimal sound, school auditoriums need
effective sound design.. Not long ago, I sat in my daughter’s high school auditorium, prepared for the long haul of the Spring concert...
Idiots with meters and idiot meters How do you know your measurement is correct? 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...
Sound quality CONCLUSION A matter of timing. 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.
Hearing matters FCC actions leave wireless mics in limbo. 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.
Polar explorations (CONCLUSION) Polar balloons, Isobal plots and coverage plots 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.
SPOTLIGHT OF SOUND Bringing audio in retail environments into focus. As retail marketing evolves and becomes increasingly competitive, marketers continue to search for new ways to capture and guide the attention of their customers.