*BSD News Article 82548


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From: zeno@serv.net (Sean T. Lamont .)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: digital audio extraction from CD-ROM via SCSI
Date: 8 Nov 1996 18:38:39 -0800
Organization: ServNet Internet Services, Seattle, WA
Lines: 21
Message-ID: <560qrf$1g3@itchy.serv.net>
References: <55lonc$hi@hannibal.camelot.de> <55slgr$h3@anorak.kew.utl> <SCOTT.96Nov8141107@crux.dcs.qmw.ac.uk>
NNTP-Posting-Host: itchy.serv.net

In article <SCOTT.96Nov8141107@crux.dcs.qmw.ac.uk>,
Scott Mitchell <scott@dcs.qmw.ac.uk> wrote:

>Or, you could (presumably) just suck blocks of audio data off of the disk and
>get your sound as raw bits.  I imagine the DACs on your average CDROM drive
>are pretty crap to say the least, so you'll get a way better copy if you do it
>raw.  IIRC, the CD audio and data formats are practically identical so doing
>this should be simple(ish).


This is incorrect ; the audio data is at a lower level than the cd-data. You
need a non-standard CD rom to do this , most won't allow it. The only one I know
for sure that will do it is the one they ship with the HPPA systems ; this isn't
manufactured by HP, so it has a real part number for a non-HP mfr, but I don't
know what it is.

-- 
Sean T. Lamont, President / Chief NetNerd, Abstract Software, Inc. (ServNet)  
- Internet access * WWW hosting * TCP/IP * UNIX * NEXTSTEP * WWW Development -
email: lamont@abstractsoft.com              WWW:  http://www.serv.net
"...There's no moral, it's just a lot of stuff that happens". - H. Simpson