Tag Archive for: Acoustics

Acoustic Measurements Without Computers

By Pat Brown

In this article, Pat Brown shows how to record acoustic measurements without a computer and get better data.

It is difficult to describe how something sounds. The terms are vague and subjective, and often have different meanings … Read more

Absorption Coefficients Clarification

By Pat Brown

Pat Brown helps the reader understand more about absorption coefficients.

A recent Syn-Aud-Con listserv thread brought out some interesting facts about absorption and absorption coefficients. A common definition of the unit of absorption, the Imperial Sabin, is … Read more

Small Room LF Design Dimensions or Ratios?

By: Jeff D. Szymanski, PE

For at least the past 6 decades, acousticians have sought better sounding small rooms. Over the last 10 to 15 years, the “home studio” and “home theater” technology boom has brought the question of “What … Read more

What's a DLL? and when do I need one?

By Pat Brown

This article addresses some specifics of the direct field prediction process, specifically the sound radiation patterns from loudspeaker arrays and if DLL is a useful too.

The predictions performed by acoustic prediction software can be divided into … Read more

Fixing the Drywall Box

A low budget solution to a common acoustical problem

Theory and Practice – By Dale Shirk

With today’s financial pressures, many churches and schools are trying to build their facilities as inexpensively as possible. Almost invariably, this leads to the … Read more

"In Situ" Absorption Coefficients – Part 2

Meaningful Metrics – By Pat Brown

The best data comes from actual measurements. The absorption coefficients of a surface can be measured “in situ” with almost any measurement system. Here is a method and some caveats.

If you own a … Read more

Sound Sources for RT Measurements

By Pat Brown

What’s the best way to measure reverb times? Balloon pops? Omni loudspeakers? This article compares multiple source types and presents some surprising conclusions that can greatly simplify the RT collection process.


There have been some threads … Read more

Lakewood Church Revisted

Tools of the Trade – By Pat Brown

Lakewood Church room impulse responses allow you to listen to the space, analyze the data, and take a virtual visit to one of the best-behaved arena-sized spaces in the world.

A Missed

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Your First Measurement Rig…

Meaningful Metrics – By Pat Brown

Many first-time buyers of measurement rig are confused by the multitude of choices in the marketplace. This article will help you sort through the offerings and spend your money wisely.

If you are tooling … Read more

Point Source Loudspeaker / Line Array Comparison

By Pat Brown

Pat Brown collected measured data and compared a point source loudspeaker and line array in the same semi-reverberant environment.

The Phoenix, AZ Sound Reinforcement for Designers class experienced one of our best site visits ever. You can Read more