Newsgroups: comp.speech
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From: jpcampb@afterlife.ncsc.mil (Joe Campbell)
Subject: Re: speech compression algotirithms needed
Message-ID: <1993Oct3.220353.15612@afterlife.ncsc.mil>
Organization: The Great Beyond
References: <CE67K4.CxF@freenet.carleton.ca>
Date: Sun, 3 Oct 1993 22:03:53 GMT
Lines: 30

In article <CE67K4.CxF@freenet.carleton.ca>,
Frank Worm <af801@Freenet.carleton.ca> wrote:
>
>I anm a developer of 8031/32 68HC11 microcontroller devices, in
>my spare time and for non-profit I develop using same controllers
>products for the disaledbled. I am looking at a special phone 
>controller for a special women and need to be able to do some
>speech comprerssion, I would linke to get 60 seconds of speech into
>60 k of memory, ie 1KB/s 8,000kKb/s.
>
>I hav ee been looking at CVDSSD and ADPCM to do this CVSD would
>requiere extra hardware wiljhile ADPCM i could implement simply
>with an ADC/DAC arrangement. If anyone knows of any good 'C' code for ADPCM
>3 bit, or 4 bit could you send it to my email address, i can not do FTP's from this system yet! Any code theat will compress pspeaech down to the
>above mention criteria and would work with an A/D,D/A set up (8 buit) would
>be appreicated!
>Thanks agasinin.
>-- 

I'm unaware of any standard ADPCM (G.7xx) that can be implemented simply
with an ADC/DAC arrangement, what about the predictor?  Anyway, all your
questions (and more) are answered in the FAQ for this group.

Good luck,
Joe
-- 
.............................................................................
; Dr. Campbell  N3JBC  jpcampb@afterlife.ncsc.mil  74040.305@compuserve.com ;
; My opinions are mine!   Happiness = Reality - Expectations, Click & Clack ;
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