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From: Takashi Iwai <tiwai@suse.de>
To: Jonathan Gage <chimera@darkscape.net>
Cc: alsa-devel@lists.sourceforge.net
Subject: Re: correction: audiophile USB stream0 output
Date: Fri, 23 May 2003 12:21:32 +0200	[thread overview]
Message-ID: <s5hbrxuq7yr.wl@alsa2.suse.de> (raw)
In-Reply-To: <003801c3207b$0c70a140$3700a8c0@jono>

At Fri, 23 May 2003 01:58:54 +1000,
Jonathan Gage wrote:
> 
> agh, many apologies for my stupidity. posting cat /proc/asound/stream0 with nothing
> playing back was a silly, useless excercise :)

no, don't worry, it's still useful in many cases.  it shows better
view than reading the output of lsusb.

> here is stream0 while playing back, the
> problem seems to be that the later drivers (0.9.3c) are running the card at 96khz
> (which results it digital noise) while the older drivers (0.9.0rc5) are running it at
> 48khz. I guess this is what the difference in the "momentary frequency" between the
> two tests means... is there a way to make the card run at 48khz? (.asoundrc?)

what kind of audio (format, rate, channels) did you use?
i see the playback and the capture are running in different rates.

the reason to get a too high rate is that i disabled the error check
in on 0.9.3c (line 408).  please remove '#if 0/#endif' there and 
see what happens.  you'll get warning messages (if the driver is
compiled with --with-debug option).

also, an alternative workaround is to use adaptive out instead of
async out mode if both modes exist.  of course, it's better to fix the
bug of async out mode.


thanks,

Takashi


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      reply	other threads:[~2003-05-23 10:21 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-22 15:58 correction: audiophile USB stream0 output Jonathan Gage
2003-05-23 10:21 ` Takashi Iwai [this message]

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