Acoustic Measurement Study Hall, Professional Audio Resources

Wednesday, September 05, 2001

Transcript: EASE 4.0 with Ron Sauro

PSW Staff 09/05/01 11:35 AM, 0 Comments
Moderator: Welcome to tonight’s live chat session with Ron Sauro, who’s been gracious enough to join us to talk about EASE and new EASE 4.0. Ron, can you start by talking a bit about your background and experience with EASE?… View this post

Filed in: Live Sound • Study Hall • Software

Monday, October 22, 2001

Transcript: Using Smaart with Jamie Anderson

PSW Staff 10/22/01 02:33 PM, 0 Comments
Moderator: (Dave Dermont) Good evening and welcome to our chat with Jamie Anderson of SIA Software Company. Jamie, could you give us some background about what you did before SIA, for those of us too lazy to read the bio?… View this post

Filed in: Live Sound • Study Hall • Measurement • Software

Sunday, December 30, 2007

The Nyquist Plot Explained

Don Davis 12/30/07 12:18 PM, 0 Comments
Harry Nyquist is famed for his work on feedback circuit analysis. His Nyquist plot makes visual simultaneously the following viewpoints of the signal: 1. The real part 2. The imaginary part 3. The magnitude 4. The phase angle between the… View this post

Filed in: Live Sound • Feature • Study Hall • Loudspeaker • Measurement • Signal

Transcript: Smaart Impulse & Phase Measurement

PSW Staff 12/30/07 12:22 PM, 0 Comments
Question posted by Patrik Arnekvist on September 17, 2001 I know there’s a lot of Smaart experts here so here goes a thought. When using the delay locator, Smaart assumes that the right delay setting is at the highest peak… View this post

Filed in: Live Sound • Forum • Study Hall • Loudspeaker • Mixer • Software

How To Make High-Resolution Impedance Measurements

Pat Brown 12/30/07 12:31 PM, 0 Comments
Because the impedance of a loudspeaker is a frequency-dependent parameter, it must be measured at multiple frequencies to get a true picture of what the amplifier is “seeing” at its output terminals. While very sophisticated methods and instruments exist, you… View this post

Filed in: Live Sound • Feature • Study Hall • Loudspeaker

Predicting Array Performance

Bruce Main 12/30/07 12:54 PM, 0 Comments
Back in the good old days predicting the performance of a group of loudspeakers was a hit and miss proposition. We tried to hit all the people and miss the walls. We were happy if we had enough devices to… View this post

Filed in: Live Sound • Feature • Study Hall • Line Array • Software

A Real World Example of Limiting Distances

Pat Brown 12/30/07 01:10 PM, 0 Comments
If acoustic parameters sometimes seem difficult to grasp, this practical example should help clarify at least one of them, the Limiting Distance, DL. This is a parameter associated with reverberant spaces (such as gyms and churches with little absorption). Remember… View this post

Filed in: Live Sound • Church Sound • Feature • Study Hall • Measurement • Sound Reinforcement

Using “%ALcons” to Aim a Line Array

Pat Brown 12/30/07 01:15 PM, 0 Comments
A small section of rural southern Indiana has a dense Roman Catholic population of predominantly German descent. A number of traditional church buildings dot the landscape - most of which are very old and very reverberant. Buddy Ward is the… View this post

Filed in: Live Sound • Church Sound • Feature • Study Hall • Line Array

Thursday, May 01, 2008

SIA Smaart Live for Beginners

Doug Fowler 05/01/08 11:45 AM, 1 Comment
A New Paradigm – Linear Transfer Before delving into the nuts and bolts it is necessary to examine the desired goal of measurement. After all, how can one get somewhere without knowing the destination? After much exposure to Smaart in… View this post

Filed in: Live Sound • Feature • Study Hall • Consoles • Mixer • Software

Monday, April 20, 2009

Equalizing the Room - What it Really Means

Bob McCarthy 04/20/09 03:56 PM, 0 Comments
“I am going to equalize the room.” We’ve all heard that statement so many times that we scarcely think about what it literally means. We know that in practical terms it means adjusting an equalizer to suit your taste. It… View this post

Filed in: Live Sound • Church Sound • Feature • Study Hall • Training • Loudspeaker • Measurement • Sound Reinforcement

Friday, May 08, 2009

Proper Loudspeaker Placement: How To Avoid Lobes and Nulls

Pat Brown 05/08/09 11:53 AM, 2 Comments
The sound system in your house of worship goes into feedback whenever microphones pass under the loudspeaker array. Worse yet, there are “soft spots” in some sections of the audience area. Choir mics “squeal” before they are loud enough and… View this post

Filed in: Church Sound • Feature • Study Hall • Loudspeaker • Sound Reinforcement

Friday, June 12, 2009

Acoustic Fundamentals And The Nature Of Sound

Neil Thompson Shade 06/12/09 05:07 PM, 3 Comments
Why should one bother trying to understand basic acoustics? The most simple (and correct) answer is that study of basic concepts enables one to sort through the truth, semi-truth, myths and flat-out errors that pervade the pro audio industry. The… View this post

Filed in: Live Sound • Feature • Study Hall • Audio • Signal • Sound Reinforcement • Stage

Thursday, November 19, 2009

Understanding Sound System, Loudspeaker & Room Interactions

Sam Berkow 11/19/09 11:46 AM, 3 Comments
If one could listen to only the direct sound of a loudspeaker, the world would be a very different place! Unfortunately, free field listening, where you have NO reflections, room modes or ambient noise, is hard to achieve in everyday… View this post

Filed in: Live Sound • Feature • Study Hall • Loudspeaker • Measurement • Signal • Software • Sound Reinforcement

Saturday, December 19, 2009

RT: Reverberation Time = Real Tricky? Comparisons Between Measured & Predicted

Jeff D. Szymanski 12/19/09 11:10 AM, 0 Comments
In working with sound and acoustics, here’s something many of us do but may not actually think about enough: Comparisons between measured and predicted reverberation times (RTs). RT (a.k.a., “RT60,” “T60,” “T,” et al) is a widely used quantifier of… View this post

Filed in: Live Sound • Feature • Study Hall • Training • Audio • Measurement • Signal • Software • Sound Reinforcement

Tuesday, December 22, 2009

The Devil And The Auto RTA: Don’t Forget To Use Your Ears

Bennett Prescott 12/22/09 11:06 AM, 1 Comment
In my perhaps too frequent visits to the Live Audio Board (LAB), I regularly read about weekend warriors who have just acquired their first DSP (digital signal processor) system controller and are seeking to understand how it’s auto RTA (real-time… View this post

Filed in: Live Sound • Feature • Study Hall • Digital • Engineer • Line Array • Loudspeaker • Measurement • Software • Sound Reinforcement • System • Technician

Thursday, December 24, 2009

Loudspeaker Sensitivity: What’s A Watt Anyway?

Charlie Hughes 12/24/09 12:52 PM, 1 Comment
The specification of a loudspeaker’s sensitivity is probably one of the most common, yet perhaps one of the most misunderstood. It’s common to see the magnitude response of a loudspeaker system reduced to a single number as a sensitivity rating.… View this post

Filed in: Live Sound • Feature • Study Hall • Loudspeaker • Measurement • Sound Reinforcement

Tuesday, December 29, 2009

Building Your Worship Center For Quality Sound & Acoustics

Vance Breshears 12/29/09 04:34 PM, 0 Comments
“Hi, my name is Bob. I’m with “xyz” church and we’re designing a new worship center,” says a voice on the other end of the phone. “The architect told us it’s time to get a sound guy involved, so I’m… View this post

Filed in: Church Sound • Feature • Study Hall • AV • Audio • Installation • Measurement • Processor • Software • Sound Reinforcement

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