Entries by Pat Brown

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

More About Square Waves and DC Content

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By Charlie Hughes
 
In this article, Charlie takes square waves to a deeper level. Questions like “What causes it to have its square shape?” will be addressed.

A recent thread on the SAC listserv “Looking for a new DMM” generated … Read more

Where do I plug Input Type Connectors In?

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By Pat Brown

Pat Brown takes the commonly used input type connectors and answers this question, “Where do I plug it in?”

Almost every SynAudCon seminar has attendees from other technical fields that need to learn about sound systems and … Read more

CLF Viewer – On-Line CLF Database

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By Pat Brown

The CLF website now has an on-line database of CLF loudspeaker data. This article also discusses a new feature that has been added to CLF Viewer.

The CLF website now has an on-line database of CLF loudspeaker … Read more

CLF Viewer Adds Direct-Field Averaging Feature

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By Pat Brown

Most loudspeakers need some direct field equalization. CLF Viewer added direct-field averaging for loudspeaker equalization.  Read to learn more.

Regardless of the acoustic environment, most loudspeakers need some direct field equalization. This is the first step of … Read more

Describing Inside the Box from Outside the Box

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Campbell’s Corner – By Dick Campbell

This is a fun article. It brings back memories of a presentation 15 year ago to the Acoustical Society, titled “On the Presentation of Large Amounts of Room Acoustic Data”, [1] where I showed … Read more

Balanced Ipod Output

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By Pat Brown

In this article, Pat Brown will show you a little trick to convert Ipod unbalanced stereo output to a balanced Ipod output.t.

Last issue I reviewed some portable media players to determine their usefulness as program sources … Read more