Audio

The Next Two Years Under The New Wireless Spectrum

Looking at potential effects on wireless microphones and communications devices. 0 517
Audio

A Word In Your Ear

Although I already have something along the lines of 200 technical audio and acoustics books, I am always on the … 0 152
Audio

Sound In Space

Taking inspiration from the arts.0 383
Audio

Playing Zone

The reality is that, to compete in the hospitality space, integrators have to “play zone.” 0 293
Audio

Auctioned-Off 600MHz Spectrum Already Being Occupied

As a result of the FCC's incentive auction in April 2017, wireless microphone systems that operate in the auctioned spectrum (617MHz to 652MHz and 663MHz to 698MHz) must cease operation in the auctioned-off spectrum.0 700
Audio

Louder Isn’t Necessarily Better

The needs of hard-of-hearing people are complex and multifaceted.0 1202
Audio

Considerations For Critical Wireless Communications

Technologies, applications and the RF landscape are all evolving.0 338
Audio, Business

Voice Control Capabilities Enter The Workplace

Once-fantastical dreams are coming closer and closer to reality.0 1055
Audio

The Case Of The Distorted Audio

Trust your instincts…and your established procedures!0 1261
Figure 1. Projected coverage cones for ceiling loudspeaker system.
Audio

Under Cover

There’s more to obtaining even loudspeaker coverage than meets the eye. Part 10 1313
Audio

Occupational Hazards

The effect that audiences and people can have on sound system performance. Part 20 1284
Figure 1.
Audio

No Time For Complacency

Reserved channel for wireless microphones is pending before the FCC.0 620
Audio

Reversing The ABCs Of Acoustics

Using sound masking as a design platform.0 1925
Audio

The Evolution Of Sound Masking

From a “necessary evil” to a critical, but challenging, solution.0 1671
Audio

Look Who Finally Showed Up!

A look at acoustically delayed audio.0 1154
Audio

Occupational Hazards

Exploring the effects audiences can have on sound-system performance. Part 10 2216
assistive-listening
Audio

‘Invisible’ No Longer

Staying current on assistive-listening legislation and hearing-loop installation standards.0 1114
Audio

Scaling The Wall Of Sound

The legendary sound system is one stop on a long, strange road.0 3038
Audio

Train Crash: Has Audio Training Come Off The Rails?

Education is the art of drawing out information, not ramming it in!0 1765
Audio

Minority Interests

Are we designing our sound systems for all of our listeners?0 1041
Audio

Latency In Sound System Design

Keeping latency to a minimum can help you avoid common pitfalls.0 910
Audio

Consistent Conference Commissioning

Calibrated calls can champion confabulation.0 919
Audio

Interesting Times (For Wireless Audio)

The incredible shrinking spectrum.0 1142
Figure 1. STI plot and statistics for a platform sound system.
Audio

Where’s The Point? Part 7

Averages and statistics: What was the number you wanted?0 1065
Audio

Sounds Bad? Sounds Good? Who Knows The Difference Anymore?

Sound has been trivialized for convenience. That is a Disaster, with a capital “D,” for our industry.0 1675
Audio

Objective Analysis: Determining The Causes Of A Sound System’s Poor Performance

During my work, I am often asked to look at systems and advise why they are not performing as well … 0 498
Audio

Battle Of The (Frequency) Bands

The recently concluded auction will have a profound effect on wireless users.0 1174
One Powell AT&T Store in San Francisco
Audio, Installations

Psychology Of Sound

Diving deeper into sound strategy for retail.0 2237
Audio

Sound Absorption: The Material Facts

Where’s The Point? Part 60 1522
Audio

Bluetooth For Assistive Listening In Theaters

Piece of cake? Not quite.0 2136
Audio

Signal-To-Noise Ratio: When It Really Counts

AV9000 Checklist Item Under Test: 6.2.7: The electrical noise levels for all audio channels are “xx”dB (“55dB” recommended for most … 0 1576
Audio

Reverberation Time: Where’s The Point? – Part 4

<a href="http://www.soundandcommunications.com/accurate-audio-acoustic-measurements/">Part 1</a><br/><a href="http://www.soundandcommunications.com/accuracy-wheres-point-part-2/">Part 2</a><br/><a href="http://www.soundandcommunications.com/sound-decay-wheres-point-part-3/">Part 3</a>0 1324
Bluetooth For Commercial AV
Audio

Bluetooth For Commercial AV

Fulfilling growing demand for the de facto consumer audio connectivity solution.0 2223
Audio

InfoComm’s First Audio Standard Gets A Facelift

Any day now (if it hasn’t already happened by the time you read this), InfoComm will be releasing a new … 0 1934
assistive-listening
Audio, House Of Worship

Assistive Listening For Houses Of Worship

WiFi audio, loops, RF and IR are options.0 2753
Audio

Commissioning Theme Parks & Attractions

Can you hear me now?0 1259
Figure 1. Family of RT curves for a large reverberant auditorium; note the lower times of the EDT curve.
Audio

Sound Decay: Where’s The Point? – Part 3

“Sound decay” sounds like a disease that decrepit concert halls might suffer from, but that’s not what I mean. The … 0 1991
Audio, Installations

NCAA’s Coors Center Upgrades Audio

PA system replaced after 35-year run.0 3377
Audio

Software Problems: A Glitch In The Matrix?

Troubleshooting decentralized, open-architecture DSP mixers.0 1279
induction loop
Audio

Induction Loop Technology: Gotcha!

You're not going to get away with brute forcing this technology.0 2123
Figure 1. Analog linear voltage and non-linear dB scales.
Audio

Accuracy: Where’s The Point? – Part 2

Last month, I discussed the differences between accuracy, precision and resolution when making some voltage/frequency measurements. In audio, however, we … 0 1386
Figure 1. Digital meter readout.
Audio

How Accurate Are Audio & Acoustic Measurements?

Where’s The Point? Part 10 1696
Audio

Zoning In On Sound Masking

Need trumps cost.0 1685
Audio

Cutting Through The Noise

The architectural trend toward open offices provides a unique opportunity for integrators.0 1426
Figure 1
Audio, Video

HDBaseT 101 – Part 1

Nearly 40% of integrators are already deploying or working with HDBaseT technology, and that number is expected to grow.0 3911
Audio

STIPA & Intelligibility

The ‘Do you understand the words that are coming out of my mouth?!’ test. 0 1727
fcc
Audio

Wireless Mics & The FCC Incentive Auction

Important facts on the FCC Incentive Auction for AV integrators.0 3222
Figure 1. TV set with rear-facing loudspeakers; furniture mounted in room corner.
Audio

Nice Picture. Pity About The Sound!

Why TV sound is so poor.0 2310
Figure 1. Measured RT and EDT using a dodecahedron loudspeaker compared with RT and EDT with the new sound system as the source.
Audio

Chesapeake Energy Arena Measurements & Analysis

Marsh/PMK International was initially engaged to study the existing acoustical conditions and sound system performance at Chesapeake Energy Arena as … 0 1440
listen-technologies-assistive-listening-man-at-stadium
Audio

The Assistive Listening Playoffs

Which system is best suited to stadiums and arenas?0 1589
Audio

Hearing Loops Get The Vote

Hearing-impaired individuals prefer this assistance system.1 2296
Energy Masking
Audio

Energy Masking: Reducing Distraction & Achieving Privacy

Improving methods for reducing distraction and achieving privacy.0 1673
Audio

Lobbies Getting Louder

Hotel lobbies have become hipster hangouts and alternative music venues. Properties like the Ace Hotel locations in New York, Pittsburgh, … 0 1570
Figure 1. Two very different sounds with identical dBA values.
Audio

Single-Number Metrics

What’s Their Value?0 1773
Audio

How Loud Should A System Be?

Most clients are not comfortable speaking in terms of “dBs.”0 1999
pag-nag feedback solution
Audio, AV Police Squad

Stop Feedback At Its Source!

PAG-NAGs and why they rule.0 2553
Figure 1. Unbalanced auditorium RT characteristic and target curve.
Audio

A Question Of Balance: Good Acoustics Need A Balanced Approach

Part of my job is to review the work of others or proposals from contractors and installers. This can be … 0 1812
Audio, AV Police Squad

Setting Mic Levels To Combat The ‘Yelling Crawler’

I had the privilege of watching an IT guy setting microphone levels the other day. It was a difficult room … 0 2620
Average threshold of hearing at 20kHz versus listener age.
Audio

Sound: It’s Not Just About Listening

All day, every day, and all night, every night, we are surrounded by and exposed to sound. Unlike our sense … 0 1850
Audio

The Role Of Audio In Themed Entertainment

Many of you know that famous George Lucas quote that “Sound is 50% of the movie-going experience.” For those of … 0 1830
Audio

Good Reference Materials For Acoustics & Audio System Design Are Key

Over the years, I have collected a technical library of around 200 books about audio and acoustics, and it’s my … 0 2993
Figure 2. Sub response shaped by applied DSP where each pair has increasing delay applied from the inside pair on the C/L to pairs 2, 3 and 4, moving toward the outsides of the horizontal array.
Audio

For The Love Of Mic…Put That Subwoofer Somewhere Else!

Using prediction software can put subwoofers where they should be. Subwoofers are the red-headed stepchildren of audio integration. They’re always … 0 2998
Hannah Boyd Photography 
Audio

Subs Are Key To Church Audio Installation

A challenging installation took place recently at the 800-seat Dan River Church in Danville VA, where a subwoofer solution resulted … 0 1804
Audio, Industry Pioneers

Industry Pioneers #3: Dr. Harvey Fletcher And The Rise Of Applied Physics

This article was originally published in the October 2000 issue of Sound & Communications. By the end of the 19th Century, … 0 1802
1) basic mixer, (2) DSP with matrix mixer, (3) zone processor, (4) production mixer.
Audio

Same Name, Different Purpose: The Apples And Oranges Of Audio Mixers

“You’re selling me a digital mixer for my conference room that is several times more expensive than the one I … 0 2498
Audio

Acoustic Echo Cancellation (AEC) Explained

One of the key features on DSP units is Acoustic Echo Cancellation (AEC). This feature is not usually found in … 0 4281
Audio

Silence Of The Cams

Whereas I often wear a set of noise-canceling headphones on a plane, I have always wondered how effective they are. … 0 1490
mixer slider - house of worship
Audio

RS232 Overload

Checklist Item Under Test: 3.4.17: The port and processor are of an adequate size and buffer given their intended function. … 0 1542
Club Neo in Zurich is a dazzling new club/bar/restaurant on the ground floor of an upscale high rise.
Audio

Acoustic Design: Beautiful, Effective & Invisible

Dramatic leaps in acoustic design and technology have enabled acousticians to provide clients with a myriad of options for tuning … 0 3118
Audio, AV Police Squad

Audio: It always depends.

I always teach my colleagues, my students…heck, even my 2 and 5 year olds, that you should set the microphone … 0 2336
The Heathkit CR-1
Audio

What Were You Doing In The 1950s?

I’m going to take a journey off the usual beaten path this time. There won’t be any discussions about wireless, … 0 1997
Headphone-Frequency-Response
Audio

Ear Peace

In last month’s column (“Sex & Audio”), I mentioned how there are distinct differences between male and female sound preferences … 0 1866
audio feedback
Audio

The Figure-Eight Feedback: Why ceiling mics and mix-minus shouldn’t mix.

Checklist Item Under Test: 6.31: Confirm that the speech reinforcement system is stable (no feedback) for the entire talker and … 0 2888
Audio

Sex & Audio: A Clear Case Of Discrimination!

Various studies have been carried out over the years that show clear differences between how males and females listen and … 0 2929
The Albuquerque City Council Chamber. Photo: Stephen Frazier
Audio

Hearing Loops: Assistive Listening Systems That Are Actually Used

After years of neglect, the federal government recognized the special auditory needs of the hard of hearing in the Americans … 0 2288
Audio

Gymnatorium Absorption: The Sweet Spot

Although acoustic absorption is not usually the focal point of an install, it should not be discounted. You may not … 0 1946
Audio

Aid Memoire! A Follow up to ‘Loop Gain’

It would seem that my September and October 2015 discussions have sparked more interest than almost any other I have … 0 1475
Audio

Condenser/Dynamic Mics

“When I look at the proposal for this system, I see there are multiple mic options available. Some of it … 0 1734
Audio

Trust: Building it is Hard and Keeping it is Harder

Checklist Item Under Test: Report Signature: “I hereby certify that, in accordance with specification in product, practice and performance, this … 0 1640
Audio

Sound Advice: On The Level Part 2: Peak Demand

Last month, I discussed the various sound level meter frequency weightings and integration times, and how these can affect the … 0 1474
Audio

Achieving An Effective Sound Masking Curve

Recent design trends make today’s facilities ever more dependent on sound masking for speech privacy and noise control. Because a … 0 3353
Audio, Industry Pioneers

Industry Pioneers #2: Bell, Edison And The Dawn of Telephony

This article was originally published in the June 2000 issue of Sound & Communications. It should come as no surprise that … 0 1744
Audio

The A, B, C To Z Of Sound Level Measurement

The other day, I was discussing signal-to-noise ratio (SNR) with a colleague and bemoaning the fact that many research papers/articles … 0 3206
Audio, House Of Worship, IT/AV, Video

Producing Mega Experiences With Scott Mirkin

Forty large LED screens brought Pope Francis closer to audiences in Philadelphia. Although event producers have successfully used digital media … 0 2599
Audio, Installations

Bojangles’ Coliseum Stays Competitive With New Audio

If you like to root for the underdog, then Bojangles’ Coliseum warrants your attention. The 9600-seat venue sits in a … 0 2121
Courtesy Monte Bros.
Audio, House Of Worship

Cathedral Basilica Of Saints Peter And Paul Audio

In mid-August, I received a call from Fr. Gerald Gill, the rector of the Cathedral Basilica of Saints Peter and … 0 2059
Audio

Validation: Caring About The Process Is Key

My manager at a hi-fi store years ago told me the secret to selling anything. First, recognize that the customer … 0 1401
assistive-listening
Audio

Loop Gain—x2 It’s all about listening!

Last month’s piece about hearing aids and assistive listening devices seems to have struck a chord with many readers and, … 0 1407
Audio, Business, Video

Coaxial Cable Is Still A Player

Ring out the old, ring in the…old? Last June at InfoComm, my industry colleague Malissa Dillman of Kramer Electronics taught … 0 4081
Audio

What Is Sound?

Become a Brain Surgeon in just 15 Minutes a Day! Okay, maybe not. Have you ever been asked to describe … 0 1490
Audio

Loop Gain—With A Difference

Audio frequency induction loop systems. About 10% to 14% of the general population (US and Northern Europe) suffers from a … 0 1415
Audio

No License? No Problem!

FCC issues new wireless/white space rules. On August 6, 2015, the Federal Communications Commission (FCC) released new rules concerning wireless … 0 1376
Audio

Under Cover: What’s 6dB between friends?

As is well known, the nominal coverage angle of a loudspeaker is defined by its off axis, 6dB down points. … 0 1774
Audio, Industry Pioneers

Industry Pioneers #1: Lord Rayleigh 1842-1919

This article was originally published in the February 2000 issue of Sound & Communications. In this series of articles, we will … 0 2319
Audio, Installations

Technology Fulfills Holland Performing Arts Center’s Needs

“The times they are a-changin’.” Bob Dylan’s lyric aptly applies to the Peter Kiewit Concert Hall at the Holland Performing … 0 1669
Audio, News

Hear Today, Gone Tomorrow: Some factors that affect our hearing perception.

The other day, I was setting up a fairly sophisticated and unusual paging voice alarm system and was checking out … 0 1336
Audio, Digital Signage, News, Video

Cinema Sizzle: Getting into the show.

Movie theaters are not just for movies anymore: They are now upscale venues offering the flair of Hollywood for all … 0 1370
Audio, Business

Playing the Numbers Game: Who is Responsible When it all goes Wrong?

Last month, I noted that some of the current STIPA meters do not meet the current (or even recent) standards … 0 1395
Audio

Digital Wireless Mic Frequency Coordination Part 1: I should have known there was an app for that.

Checklist Items Under Test: 6.35: For wireless microphone systems, with all wireless microphones turned on, confirm that, throughout the specified … 0 1713

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