Date: Tue, 3 Nov 1998 14:18:17 -0700 (MST) From: David G Andersen <danderse@cs.utah.edu> To: luigi@labinfo.iet.unipi.it (Luigi Rizzo) Cc: danderse@cs.utah.edu, freebsd-multimedia@FreeBSD.ORG, delaroca@ucla.edu Subject: Re: CS 4235 (AOpen 3D Sound card) support Message-ID: <199811032118.OAA05565@lal.cs.utah.edu> In-Reply-To: <199811031815.TAA16816@labinfo.iet.unipi.it> from "Luigi Rizzo" at Nov 3, 98 07:15:01 pm
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Lo and behold, Luigi Rizzo once said:
>
> > encountering some problems with audio recording from /dev/audio.
> > Recording from /dev/dsp works perfectly.
>
> also strange, since the only difference is in setting the data format.
>
> can you try the following
>
> cat /dev/dsp1 > /dev/dsp1
> cat /dev/dspW1 > /dev/dspW1
> cat /dev/audio1 > /dev/audio1
>
> and see which one works.
All of the above work like a charm.
> Actually I found some chipsets (e.g. opti931) where there is apparently
> a bug (either in the chip or in the driver, but i suspect the former)
> and you cannot select a compressed mode (ULAW) on both play&rec;
> because the MSS driver defaults to use the same mode for play&rec even
> if you use half duples, this might cause problems.
> However the 4236 and 4237 work perfectly fine.
I tried with vat to use both full and half duplex to no avail. Also
tried recording locally with nas's audemo, with no happy results. I
haven't tried ioctl'ing it into ulaw and catting it; does that seem like
the logical next thing to try?
-Dave
--
work: danderse@cs.utah.edu me: angio@pobox.com
University of Utah http://www.angio.net/
Department of Computer Science
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