From: "Russ Cox" <rsc@swtch.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu>
Subject: Re: [9fans] Now have sound but not via acd
Date: Fri, 11 Aug 2006 23:50:42 -0700 [thread overview]
Message-ID: <ee9e417a0608112350n5a25fc84ib01a4084814fedbf@mail.gmail.com> (raw)
In-Reply-To: <44DA851E.6020302@exemail.com.au>
acd tells the CD-ROM drive to play.
if there is no audio cable connecting
your CD-ROM drive and your sound card,
the (electrical) audio signal isn't going to
make it to your speakers.
acd does *not* read the digital pcm
off the cd and relay it to the sound card.
that method, now common, was not
reliable when i wrote acd.
this difference probably explains the
cd light difference you've observed.
if there is a cable connecting your CD-ROM
drive and you're still not getting sound, it's
probably because the sound card's cd volume
is at 0. cat /dev/volume to see and
echo cd 50 >/dev/volume
to change.
russ
prev parent reply other threads:[~2006-08-12 6:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-10 1:00 John Boutland
2006-08-12 6:50 ` Russ Cox [this message]
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