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Bug 688721 - Quantization noise (?) when playing back mp3 files
Quantization noise (?) when playing back mp3 files
Status: RESOLVED INCOMPLETE
Product: GStreamer
Classification: Platform
Component: dont know
unspecified
Other Mac OS
: Normal major
: git master
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Blocks:
 
 
Reported: 2012-11-20 12:57 UTC by visa.kuoppala
Modified: 2013-03-06 09:53 UTC
See Also:
GNOME target: ---
GNOME version: ---


Attachments
This quiet clip plays correctly in iTunes etc, but with the GStreamer engine (Clementine) there's additional noise. (371.51 KB, audio/mp3)
2012-11-20 12:57 UTC, visa.kuoppala
Details
Here the Feldman.mp3 is played back first through iTunes (clean) and then Clementine (noisy) (898.87 KB, application/octet-stream)
2012-11-20 12:59 UTC, visa.kuoppala
Details

Description visa.kuoppala 2012-11-20 12:57:40 UTC
Created attachment 229470 [details]
This quiet clip plays correctly in iTunes etc, but with the GStreamer engine (Clementine) there's additional noise. 

I initially reported this to Clementine Player developers, but they referred me here, as Clementine apparently uses the GStreamer audio engine (Audio Sink OSX) for playback. When I play back any quiet MP3 with Clementine, I get a lot of additional noise, which I don't get when playing it back through, say, iTunes or QuickTime Player. This noise sounds like quantisation noise, but it is not in the file. 

I've attached a short mp3 clip of quiet piano music (the beginning of For Bunita Marcus by Morton Feldman), which plays back normally in most media players, but not with the GStreamer audio engine (i.e. when I use Clementine), with which there is very noticeable additional noise.
Comment 1 visa.kuoppala 2012-11-20 12:59:49 UTC
Created attachment 229471 [details]
Here the Feldman.mp3 is played back first through iTunes (clean) and then Clementine (noisy)
Comment 2 Wim Taymans 2012-11-20 15:42:06 UTC
Sounds good to me, I don't get the noise from the second attachment. Can you paste the output of this (assuming 0.10)

gst-launch-0.10 playbin2 uri=file:///home/wim/data/Feldman.mp3 -v
Comment 3 Tobias Mueller 2013-03-06 09:53:19 UTC
Closing this bug report as no further information has been provided. Please feel free to reopen this bug if you can provide the information asked for.
Thanks!