USB microphone problems
Oliver Fromme
olli at lurza.secnetix.de
Mon Apr 18 10:31:46 UTC 2011
Hi,
Hans Petter Selasky wrote:
> On Sunday 17 April 2011 17:15:48 Oliver Fromme wrote:
> > There is still the problem that the Logitech cameras seem
> > to need a reset after plugging in. Furthermore I can't
> > change the mic level with mixer(8). Both of these problems
> > do not exist with the Philips web...
>
> I'm not sure if recording devices have a software volume control? Else we
> could easily add that.
Well, the Philips SPC 900 NC has one. After pluggin in, it
looks like this:
$ mixer -f /dev/mixer1
Mixer vol is currently set to 75:75
Mixer pcm is currently set to 75:75
Mixer mic is currently set to 0:0
And the recoding level is zero, indeed: I have to raise it
to about 70 to get a useful level (I'll probably create a
devd.conf entry to do that automatically in the future).
But the Logitech webcams tried so far (C210, C270, C310) do
not show the "mic" control. Fortunately they default to a
usable level after plugging in (a little too loud, actually,
but it's acceptable).
(Just as a side note, under Windows there is a microphone
level control, so I guess it should be supported.)
It's not a "show stopper", but it would certainly be good
to be able to control the recoding volume.
Best regards
Oliver
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