Re: Instantaneous (analogue) compression of speech signals

From: John Woodgate (jmw_at_jmwa.demon.contraspam.yuk)
Date: 01/04/05 

Date: Tue, 4 Jan 2005 16:22:50 +0000

I read in sci.electronics.design that Jim Thompson
<thegreatone@example.com> wrote (in <cdblt0dl5opsdkepnc132msd0pj7a2ru7c@
4ax.com>) about 'Instantaneous (analogue) compression of speech
signals', on Tue, 4 Jan 2005:
>On Mon, 3 Jan 2005 21:21:14 +0000, John Woodgate <jmw@jmwa.demon.contras
>pam.yuk> wrote:
>
>>Does anyone here have any experience of instantaneous (analogue)
>>compression (aka soft clipping) of speech signals? I've been doing a
>>little work on it but I'm unable to judge the resulting sound quality.
>>Why do treble boost controls no longer have any audible effect for me?
>>(;-)
>
>As a start, at the very least, don't you need to define the level at
>which ONSET of amplitude reduction begins, and then an absolute MAXIMUM
>output level?

Sure, but that comes later. I'm first looking for different techniques
to try.

In fact, it's easy to define the critical points in millivolts or
whatever using sine wave signals; it's another matter to make
*meaningful* measurements of the speech signals. 

-- 
Regards, John Woodgate, OOO - Own Opinions Only. 
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

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