An op-amp or 555 timer could likely put out a 23KHz tone. Joe Della Barba
From: CnC-List [mailto:[email protected]] On Behalf Of Frederick G Street Sent: Tuesday, July 09, 2013 11:13 AM To: [email protected] Subject: Re: Stus-List Anti-Barnacle Waves - Was: Music in cockpit Bob -- unfortunately, the Nyquist rate for a 23kHz signal is above the 44.1kHz sampling rate of audio CDs (which are theoretically limited to 22.05kHz bandwidth, but practically more like 20kHz). So no, you couldn't make an audio CD with a 23kHz signal. And yes, I AM an audio engineer... :^) Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- Bayfield, WI On Jul 8, 2013, at 7:52 PM, Bob Moriarty <[email protected]<mailto:[email protected]>> wrote: Would it be simple to create a CD with a 23 kHz sound track that could be played through a boat's sound system (to sound exciters attached to the inside of the hull)?
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