Re: [GnomeMeeting-list] Sound problem under FreeBSD 4.7

[Damien Sandras <dsandras seconix com>]

I have no clue about FreeBSD, but perhaps Roger will answer.


Le jeu 05/12/2002 à 17:18, Kevin Oberman a écrit :
> > From: Damien Sandras <dsandras seconix com>
> > Sender: gnomemeeting-list-admin gnome org
> > Date: 05 Dec 2002 16:35:08 +0100
> > 
> > Le jeu 05/12/2002 à 16:23, LEZIN Lo a écrit :
> > 
> > > 
> > > Thanks a lot for your help.
> > > 
> > > But in fact it's very strange :
> > > 
> > > cat /dev/sndstat gives me :
> > > 
> > > pcm0: <VIA VT82C686A> at io 0xdc00 irq 11 (1p/1r/0v channels duplex)
> > > 
> > > So can i think that this means that sound card is full duplex ?
> > 
> > Yes, but that doesn't mean that the driver is full-duplex.
> 
> I have exactly the same problem with FreeBSD 4.7. I see it on three
> different systems all running with embedded Intel ICH sound
> devices. All are duplex and the drivers claim to be full-duplex. 
> 
> > > I don't know how to test record and listen a the same time :-( How can i 
> > > test it ?
> > 
> > First try to record with rec -d /dev/dsp myfile.wav
> > of course, change /dev/dsp to your device.
> 
> This works fine (as far as I can tell). But when I try to paly back,
> the sound is badly garbled! Does what is sometimes called
> "motor-boating" and plays back VERY slowly in tenth second (time is an
> estimate/guess) intervals, although it is just barely recognizable.
> 
> > Then, something like cat /dev/dsp > /dev/dsp should echo everything of
> > what you say.
> 
> It does, but, like the output of rec(1), it plays back very slowly
> like it is playing a tenth second of data, pausing a tenth second and
> then playing another tenth second of data. It is just recognizable.
> 
> On the other hand, if I use the Gnome Sound Recorder, I can record and
> playback just fine. If I play back the .wav file I generated, it
> sounds just like when I cat'ed it to /dev/dsp. And, If I play back a
> file recored by the Gnome Sound recorder, I hear horrible squawking,
> not at all like what I get going the other way.
> 
> Clearly there is some sound problem here, but I am very confused by
> the conflicting results of my tests. And, when I try to send audio
> with GnomeMeeting, I get absolutely no sound, garbled or otherwise.
> 
> R. Kevin Oberman, Network Engineer
> Energy Sciences Network (ESnet)
> Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
> E-mail: oberman es net			Phone: +1 510 486-8634
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-- 
 _	Damien Sandras
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