Which Impedance? Nominal Minimum / Maximum Average

By Pat Brown This article addresses three dominant reasons for…

Sound System Autopilot

Theory and Practice - By Dale Shirk Today’s electronics can…

Using All Pass Filters to Improve Directivity Response

By Charlie Hughes In this article, Charlie will how all pass…

Think Digitally

By Steve Macatee Welcome to a recurring column on many things…

Common Loudspeaker Format (CLF) News

By Pat Brown An update on Common Loudspeaker Format (CLF) . The…

Fixing the Drywall Box

A low budget solution to a common acoustical problem Theory and…

"In Situ" Absorption Coefficients – Part 2

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

Sound Sources for RT Measurements

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.

Human Processing of Reflected Sound

This is another perspective on the significance of reverberation time and early-decay time, and the relationship between the two.

Constant-Beamwidth Transducer (CBT) Arrays

Don Keele, Jr. is at it again. His CBT line array has interesting and useful radiation properties. This introduction to the technology with get you thinking about possible applications.