Entries by Pat Brown

B-Format Microphone Goes Mainstream

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Tools of the Trade – By Pat Brown

Pat Brown gives an overview of the B-Format microphone and its capabilities.

An ongoing dilemma for those doing room acoustics measurements is the choice of microphone pattern. Omni’s are most accurate, but … Read more

It's About Time… The Effective Haas Effect

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Theory and Practice – By Dale Shirk

To implement the Haas Effect, understanding the theory is a must.  Dale Shirk explains the theory and ways to implement it.

The Haas effect, or Precedence effect has been well known for many … Read more

The Oil Drop Experiment Finally Updated

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by Don Davis

In 1910, Robert Millikan of the University of Chicago announced that he and Harvey Fletcher had developed a successful means of isolating and measuring the charge of an electron. This became known as “the oil drop experiment”

… Read more

What Happens When the Power Goes Off?

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Theory and Practice – By Dale Shirk

Dale Shirk answers this question, “So what happens to a signal when it is driven into an unpowered input?”

Today’s audio electronics are easy to interface, with one or several high impedance inputs … Read more

Acoustic Whiplash!

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Campbell’s Corner – By Dick Campbell

In this article, Dick helps us understand the benefits of acoustical scattering.

In 2001, I prepared a paper for the International Congress on Acoustics in Rome. I decided to use the CATT –Acoustic™ feature … Read more

Phase Response and Receive Delay

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By Charlie Hughes

Some time-of-flight compensation guidelines for proper viewing of the loudspeaker’s phase response.

At the recent EQ07 workshop, and on the SAC email discussion group afterwords, there were some questions about the “correct” phase response when measuring a … Read more