A NOTE has been added to this issue. ====================================================================== <https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2192> ====================================================================== Reported By: ccasteyde Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 2192 Category: PCI - intel8x0 Reproducibility: always Severity: minor Priority: normal Status: new Distribution: Slackware 10.1 Kernel Version: 2.6.17-rc6 ====================================================================== Date Submitted: 06-07-2006 20:42 CEST Last Modified: 06-07-2006 22:03 CEST ====================================================================== Summary: Very annoying acute sound recorded from line-in with M5455 chip Description: I'm using an ULi integrated sound chip, which reports as a M5455 device, and which works very nice with the intel8x0 driver for playback, but recording sound from line-in input gives corrupted sound with a very acute background sound, except when source gives silence. I have another motherboard (very older, and still with intel8x0 compatible chip), and it gives the same result. ====================================================================== ---------------------------------------------------------------------- rlrevell - 06-07-06 21:24 ---------------------------------------------------------------------- What was the exact command line you used to test it? It sounds like an application bug. ---------------------------------------------------------------------- ccasteyde - 06-07-06 22:03 ---------------------------------------------------------------------- This was really very simple: record -d /dev/dsp1 (I have another sound card, I presently use to record my sounds, and I loaded the module to make intel8x0 as the second card). Then I pressed space bar to start recording, space bar to stop. man page tells it defaults to 44100Hz, and the second test I did was : record -r 48000 -d /dev/dsp1 with -r option to tell it to record at 48kHz. This was successfull. I don't think this is an application bug in any case. I have the same problem with mencoder (mplayer), when recording TV signal: mencoder -tv driver=v4l2:device=/dev/video0:input=1:norm=$NORM:width=368:height=270:fp s=25:adevice=/dev/dsp1 -ovc lavc -oac lavc -lavcopts vcodec=mpeg4:vhq:vbitrate=1800:acodec=mp2 tv:// -o file.avi this records a film with a very bad sound (same problem). However, if I specify explicitly tells mencoder to record at 48kHz, everything works: mencoder -tv driver=v4l2:device=/dev/video0:input=1:norm=$NORM:width=368:height=270:fp s=25:adevice=/dev/dsp1:audiorate=48000:amode=1 -ovc lavc -oac lavc -lavcopts vcodec=mpeg4:vhq:vbitrate=1800:acodec=mp2 tv:// -o file.avi Please note the audiorate option (I also added amode to be sure to record in stereo, not wishing to leave default options anymore). So the problem is more generic than a simple recording application. Issue History Date Modified Username Field Change ====================================================================== 06-07-06 20:42 ccasteyde New Issue 06-07-06 20:42 ccasteyde File Added: record000.wav.mp3 06-07-06 20:42 ccasteyde Distribution => Slackware 10.1 06-07-06 20:42 ccasteyde Kernel Version => 2.6.17-rc6 06-07-06 21:16 ccasteyde Note Added: 0010091 06-07-06 21:24 rlrevell Note Added: 0010092 06-07-06 22:03 ccasteyde Note Added: 0010093 ====================================================================== _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
