On Thu, 9 Jul 2009, Dominique Michel wrote:
Le Wed, 8 Jul 2009 09:39:50 -0700,
Kevin Bailey <ke-alsa-user@xxxxxxxxxxxxxxxxxxxx> a écrit :
The built-in mikes on my laptop work but, even after turning
the recording volume all the way up, the volume isn't great.
Someone on the other end of a videoconference would complain.
The onboard mic is is purely for personal nearby use. It certainly was never
intended for video conferencing, if what you mean is that a number of people
in the room are supposed to be audible.
Is there some way to do a simple amplification of the recorded
audio in software by configuring something in .asoundrc ?
ALSA is an hardware driver, and it will not amplify the sound instead of the
hardware.
The problem here is that you will have to chain your mic input with a software
mixer-amplifier and your conference software. I don't know if it is possible
with ALSA alone, maybe with a LADSPA plugin if your conference software is
LADSPA compatible.
Get a more sensitive microphone ( eg with its own amplifier).
Another way would be to setup JACK: http://en.gentoo-wiki.com/wiki/JACK (You
can skip the rt kernel config step)
I found the softvol stuff but it didn't look like you could
amplify anything.
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