[sci.electronics] Phone voice digitization

dnewton@carroll1.cc.edu (Dave Newton the Late) (02/22/90)

   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...

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David L. Newton                 |           uunet!marque!carroll1!dnewton 
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ssy@sage.cc.purdue.edu (Kyler Laird) (02/26/90)

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