Re: Sound wheezy/KDE -- testing the microphone
Sian Mountbatten wrote:
> Hello! I am having trouble with a microphone plugged into my
> soundcard. According to Kmix, the Playback Devices are set to about
> 55%, the Capture Devices are set to 100% and both playback and capture
> are shown as not muted.
>
> speaker-test shows that the right speaker is working, but not the left.
> The microphone is not working at all according to the Skype Echo test.
> When I was using Windws 7, the microphone was definitely working. It's
> a simple device: no controls, just a pink-coloured plug.
>
> Can anybody suggest why the microphone doesn't work? And why do I only
> get one speaker working? I have an Intel ICH5 sound card.
a comment I posted years ago first here
[http://osdir.com/ml/debian-user-debian/200...msg00025.html]
and then here
[http://forum.skype.com/index.php?showtopic=532431]
microphone testing:
arecord -c1 -Dplughw:0,0 -f cd -vv /dev/null
arecord -c1 -Dplughw:2,0 -f cd -vv /dev/null
#
in detail:
1) find out cards and inputs
shell> cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xff950000 irq 22
1 [HVR900 ]: USB-Audio - WinTV HVR-900
WinTV HVR-900 at usb-0000:00:1a.7-3, high speed
2 [Webcam ]: USB-Audio - Philips SPC 1000NC Webcam
Philips CE Philips SPC 1000NC Webcam at
usb-0000:00:1a.7-5.4, high speed
=> I'm going to use the Webcam built in mic => card # 2
2) find out the input
shell> cat /proc/asound/devices
0: [ 0] : control
1: : sequencer
6: [ 0- 2]: hardware dependent
7: [ 0- 3]: hardware dependent
16: [ 0- 0]: digital audio playback
17: [ 0- 1]: digital audio playback
19: [ 0- 3]: digital audio playback
24: [ 0- 0]: digital audio capture
32: [ 1] : control
33: : timer
56: [ 1- 0]: digital audio capture
64: [ 2] : control
88: [ 2- 0]: digital audio capture
=> my input is the capture on the second card
88: [ 2- 0]: digital audio capture
3) so now we can test the mic
shell> arecord -c1 -Dplughw:2,0 -f cd -vv /dev/null
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