Re: underwater recording

Subject: Re: underwater recording
From: Roald Baudoux (
Date: Wed Dec 08 1999 - 04:28:31 EST

> er - the usual thing to use is a condom! thin and waterproof (the usual
> check for leaks is recommended!)

The association of an air microphone and a condom is surely not the best
solution because the impedance change between water and air remains (and
this stops much energy). If you want an acceptable sensitivity, you need an
hydrophone. The transducer of the hydrophone is put in some kind of oil
which makes an impedance adaptation.

Roald Baudoux

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