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To: techdiver@opal.com
Subject: Re: Mixedgas effect on speech
From: "A.APPLEYARD" <A.APPLEYARD@fs*.mt*.um*.ac*.uk*>
Date: Fri, 29 Jul 1994 14:40:55 GMT
  prapbm@er*.er*.se* (Praktikant Peter Bergstrom) wrote on Fri 29 Jul 94
15:10:47 +0200 (Subject: Mixedgas effect on speech ):-
  > ... scrambled speech, when you breath with some mixedgas under pressure?
... lower density in the gas. Which result in a frequency increase ...

  I have heard of speech `de-helium-ifiers'. Another sort of distortion of
speech that sometimes occurs is "gasmaskyness" caused by talking (while diving
or on land) into a small fullface or mouth-and-nose mask (gasmask, Kirby
Morgan mask, etc). I once heard of a speech processor to `de-Kirby-Morgan-ify'
speech: does such a device exist? What distortion in terms of frequencies and
differential amplification does `gasmaskyness' of speech consist of?

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