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Article #2342

Re: How can one copy an audioCD sound ?

#2342
From: James W. Melton
Date: Wed, 02 Sep 1992 03:25
29 lines
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In article <1992Aug31.213102.20195@newshost.lanl.gov> gavin.adams@lso.mts.dec.com (Gavin Adams) writes:
>I haven't heard of ANY CD-ROM drive capable of sending CD Audio (Red Book
>or is it Orange) out the SCSI port.  Most drives have a line-level output
>on the drive.  This can be routed to a stereo, DSP, whatever.
>
>On PC's (IBMs) the line-out on the CD drive goes to a line-input on a
>sound card.  Sampling to waveform files is normally done via DMA access,
>and for CD quality audio (44 Mhz 16 bit sampling) a '386-based machine is
>needed.

Just for the record, Silicon Graphics sells a CD-ROM drive that
provides SCSI audio of Red Book CDs. The Indigo has the DSP
necessary to convert the signals to audio and play them out the CPU
sound port.

However, this hogs the SCSI bus / CPU so much that you would not
normally do this to listen to your CDs. It is better to get some
speakers and play your CDs through the audio port.

As far as sampling on an LC goes, even if you got the audio data
via SCSI, you need software on the Mac to interpret the data for
your sample (I plead ignorance here). I don't know of any.

----
-- 
Jim Melton, novice guru
email:      flash@austin.lockheed.com | "So far as we know, our
voice mail: (512) 386-4486            |  computer has never had
fax:        (512) 386-4223            |  an undetected error"
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Message-ID: <1182@shrike.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!usc!cs.utexas.edu!ut-emx!shrike!flash
References: <cshotton-280892091351@oac2.hsc.uth.tmc.edu> <28AUG199211132625@utkvx2.utk.edu> <1992Aug31.213102.20195@newshost.lanl.gov>

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Path: arc1-ca.pugleaf.net!sparky!uunet!usc!cs.utexas.edu!ut-emx!shrike!flash
From: flash@austin.lockheed.com (James W. Melton)
Newsgroups: comp.sys.mac.apps
Subject: Re: How can one copy an audioCD sound ?
Message-ID: <1182@shrike.com>
Date: 2 Sep 92 03:25:15 GMT
References: <cshotton-280892091351@oac2.hsc.uth.tmc.edu> <28AUG199211132625@utkvx2.utk.edu> <1992Aug31.213102.20195@newshost.lanl.gov>
Organization: "Lockheed Austin Division, 6800 Burleson Rd, Austin, TX 78744
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