On Wed, Mar 22, 2006 at 01:57:59PM +1100, Bruce Badger wrote:
> I can hear sound picked up from the microphone through the onboard
> speakers or via headphones. I can control the volume of the mic using
> the Gnome volume control and Alsa mixer. I can also mute and un-mute
> using the Gnome volume control. I can also get a really loud feedback
> noise :-)
Two things come to mind (not Debian specific) which is that most sound
cards can only record from one input source AT A TIME but may have
several input sources available. Thus, you have to make sure you have
the mic selected as your current input source (usually a flag in the
mixer somewhere). One possible way of setting this is:
aumix -m R
The other thing is that the audio digitiser module of the sound card
(i.e. the bit that actually does the recording) usually has its own
volume control, which might be called something like "Input gain control"
or various other things. With "aumix" it is called "IGain" on the
ascii-art interactive screen and "imix" on the manpage, your mixer
almost certainly has a different name for it. Some drivers ignore
your settings for this control and leave the card in auto-gain-control
mode (as far as I know, most linux mixers don't have a way to toggle
the auto gain control other than at compile time).
If those things don't help then it's probably some Debian thing...
- Tel
--
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
