Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!wuarchive!mit-eddie!bu.edu!purdue!sage.cc.purdue.edu!ssy
From: ssy@sage.cc.purdue.edu (Kyler Laird)
Newsgroups: sci.electronics
Subject: Re: Phone voice digitization
Message-ID: <3698@sage.cc.purdue.edu>
Date: 26 Feb 90 14:40:06 GMT
References: <1233@carroll1.cc.edu>
Reply-To: ssy@sage.cc.purdue.edu (Kyler Laird)
Organization: Purdue University
Lines: 16

In article <1233@carroll1.cc.edu> dnewton@carroll1.cc.edu (Dave Newton the Late) writes:
>
>   Does anyone know what part the NeXT machine uses for its 8-bit voice
>digitization?  It is supposed to be of the type used by the phone company
>to digitize voive for subsequent transmission.
>   any help appreciated...

From what I've been seeing...

8-bit digitization is used for ISDN service, but it's really 13(?) bit 
digitization companded to 8.

The military and public phone systems just use 4/6-bit digitization.

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Kyler Laird                  I'm  the NRA             ky@en.ecn.purdue.edu