Home Speaker Asylum

General speaker questions for audio and home theater.

???

I'm confused, Bare.

"BFD"?

"Nice try"??

And while we're on the subject, I never said anything about hearing through one's teeth.

Perhaps you don't buy my explanation of the phenomenon of "beats", so below I've posted a link to a site endorsed by the National Science Teachers Associaton.

By the way, a few years back Bob Carver was working on a device that involved a rather unique application of beats to "beam" a tightly-focused column of sound, using a 200,000 Hz carrier signal. He was able to re-create sound well within the audible spectrum entirely from ultrasonics. I searched the web but failed to come up with any specific reference to Carver's involvement. All I could find was a rather simplistic news article describing this technology, here:

http://www.abcnews.go.com/sections/scitech/CuttingEdge/cuttingedge010831.html

Basically, what I'm saying is: a) the "beat" phenomeon is real; b) ultrasonic overtones are real; and c) that ultrasonic overtones can generate beat signals within the audible range.

On the subjective front, a comparison of analog or SACD to redbook CD's demonstrates that the ear is indeed sensitive to things happening (or not happening) at frequencies theoretically above the range of human hearing.

Cheers,

Duke


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  • ??? - Duke 01:52:39 07/28/02 (0)


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