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Sound Sucker: Acoustic Illusion

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Scan day: 09 February 2014 UTC
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Description: William Beaty describes an acoustic project with weird results.
Weird Project: acoustic "frequency hole" SOUND SUCKER, "ACOUSTIC ILLUSION" The device below is a good sound absorber. It probably absorbs certain frequencies much better than others. At first glance you'd think this would be boring. However, the psychological effects are VERY INTERESTING. When you hold the thing up near one ear, you feel as if:
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Page title:Weird Project: acoustic "frequency hole"
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Creation Date: 19-dec-1998
Expiration Date: 19-dec-2017