[sdiy] Acoustic diode

KA4HJH ka4hjh at gmail.com
Wed Jul 27 18:39:28 CEST 2011


This is interesting:

<http://www.popsci.com/science/article/2011-07/acoustic-diode-only-lets-sound-travel-one-way-opens-door-true-soundproofing>

-- 

Terry Bowman, KA4HJH
"The Mac Doctor"



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