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From: ron@brl-tgr.ARPA (Ron Natalie <ron>)
Newsgroups: net.audio
Subject: Re: Digial audio info wanted
Message-ID: <7766@brl-tgr.ARPA>
Date: Sun, 27-Jan-85 18:06:47 EST
Article-I.D.: brl-tgr.7766
Posted: Sun Jan 27 18:06:47 1985
Date-Received: Wed, 30-Jan-85 07:49:23 EST
References: <235@cmu-cs-k.ARPA>
Organization: Ballistic Research Lab
Lines: 25

> Is there any standart for *digital* audio interconnections?
> It seems that CD players, PCM audio systems and possibly other
> digital audio-equipment (say a digital equilizer) will need digital
> interconnections, defering the D-to-A conversion to the last point in
> the chain (this could be an active Box with one DAC/filter/power-amp
> for each speaker system, where the band-splitting and individual
> equilization is done digitally -- think VLSI).
> 
> To be more precise:
>   1) Is there a CD-player available that has a connector on the back
>      that gives the stream of 16bit-words after the error-correction
>      logic and before any filter/over-sample operation?
>   2) Is there a PCM encoder that accepts 16bit-words instead of an
>      analog input?
>   3) Are there other digital audio-sources in use or planned (such as
>      synthesizer, microphones [there are methods for precise
>      analog-air-pressure to digital-electrical signal], etc) ?
> 
> Please send mail to:      agn@cmu-cs-k.ARPA
>                  or:      ...!seismo!cmu-cs-k!agn
> 
>    Thanks  --  Andreas
It looks from the schematics for my cheapo Technics player that you can
get the digital out with no problem at all.  You just need to tear into
it.