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From: ron@brl-tgr.ARPA (Ron Natalie <ron>)
Newsgroups: net.columbia
Subject: Re: Orphaned Response
Message-ID: <8321@brl-tgr.ARPA>
Date: Tue, 19-Feb-85 23:04:16 EST
Article-I.D.: brl-tgr.8321
Posted: Tue Feb 19 23:04:16 1985
Date-Received: Thu, 21-Feb-85 05:47:30 EST
References: <1300010@uok.UUCP> <8500010@uiucdcs.UUCP>
Organization: Ballistic Research Lab
Lines: 17

> 
> No, electric guitars do not need air. The pick-up is not a microphone,
> but rather a magnetic transducer. The pole piece in the transducer
> senses the proximity of the string to the pole piece, producing a signal
> at the output of the transducer based on the distance of the string from
> the magnetic pole piece. This way no foreign noise is picked up (background)
> such as sneeze, cough, etc.
> 
> A recording could be made of an electric guitar in space, and played on
> earth to see what had been created in space. (The speakers would then
> have air to transmit the sound).

My Rhodes works the same way.  We could use bone-conduction receivers
to avoid having to have air coupling.


-Ron