Bug 7706

Summary: Choppy sound
Product: Sisyphus Reporter: Mikhail Zabaluev <mhz>
Component: gstreamer-alsaAssignee: Igor Zubkov <icesik>
Status: CLOSED FIXED QA Contact: qa-sisyphus
Severity: critical    
Priority: P2 CC: mike, the_arioch
Version: unstable   
Hardware: all   
OS: Linux   

Description Mikhail Zabaluev 2005-08-18 01:21:45 MSD 
Sound play is chopped in GStreamer applications (totem, rhythmbox) as of
gstreamer-alsa-0.8.9-alt1.
'aplay' plays audio files without defects in the same system.
Comment 1 burov dmitry 2005-09-14 11:19:45 MSD 
amarok plays fine with xine engine.

I don';t remember about gstreamer/oss
gstreamer/alsa plays choppy with mp3 files with frequency 32, 24 - not 44,1 
default.

Hardware: Intel 855GM Centrino, AC'97 sound, intel-8x0 kernel module.

Let's compare more details ?
Comment 2 Mikhail Zabaluev 2005-09-14 20:28:27 MSD 
I have a Terratec DMX 6fire 24/96 (ice1712).
I don't think the hardware is at fault though, as aplay and xine seem to have no
problems.
Comment 3 burov dmitry 2005-09-15 19:04:21 MSD 
i asked somewhere on our lists - does GStreamer utilize libalsa, which contains 
a database of sound card features? I got no answer :-)

But it is my hypothesis, that sound is choppy, when frequency of sound stream 
does not match some 'natural' freq. of sound card - and GStreamer does not do 
any requantization. It is only a hypothesis.

Did You note some common conditions when sound is choppy and when it is not ?
Comment 4 Mikhail Zabaluev 2005-09-16 21:34:35 MSD 
(In reply to comment #3)
> Did You note some common conditions when sound is choppy and when it is not ?

It's always choppy when played via GStreamer from all apps using it, and it's
not choppy when a test .wav is played via aplay (which uses only alsa libs).
Also, when the GStreamer sound output is switched to OSS in the GNOME GStreamer
settings dialog, a test sound can be played OK. But Rhythmbox and Totem fail to
play via OSS, popping up an error.
Comment 5 Mikhail Zabaluev 2005-09-19 10:02:05 MSD 
It's mine now.
Comment 6 Afanasov Dmitry 2006-05-10 09:20:15 MSD 
повторяется - sound is choppy in amarok. но и в aplay при выводе через dmix 
тоже.

mplayer играет через dmix нормально.
Comment 8 Michael Shigorin 2006-12-17 21:34:40 MSK 
re
Comment 9 Igor Zubkov 2007-01-09 02:31:17 MSK 
re
Comment 10 Michael Shigorin 2007-06-19 00:09:11 MSD 
rё
Comment 11 Igor Zubkov 2008-06-15 21:12:36 MSD 
(In reply to comment #7)
> https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2095

Судя по тому что написано в их мантисе, баг уже давно исправлен.