I've just moved to Intrepid (alsa 1.0.17) on a Dell Inspiron 1720 with
Intel audio (00:1b.0 Audio device: Intel Corporation 82801H (ICH8
Family) HD Audio Controller (rev 02)), and I was having exactly this
same problem: my internal digital microphone on the top of the screen
would only capture my voice if I shouted.
I was able to quickly fix it by modifying my /etc/asound.conf. The idea
was to use ALSA's softvol dB-gain plugin to do a software mic boost and
pipe that to a new pulseaudio device "pulseboost" that can be used by
Skype etc.
After adding those lines below and rebooting, you should see a new
slider called "+50dB Mic Capture Volume" in gnome-volume-control's
Recording tab (if you don't see it, go to Preferences and check it).
Raise it to maximum (+50dB), or a bit below that in case the maximum
value clips your voice or captures too much noise in the environment.
In my case, Skype was able to list a new device named "pulseboost" in
its Options configuration dialog's SoundDevices tab. If you choose this
device for SoundIn, Skype can benefit from the +50dB softvol mic boost
in gnome-volume-control. I also chose it for my Skype's
soundout/ringing, but I think that's not required.
Is there a side-effect to this? Well, I guess that with this setup you
can only use the mic at one application at any time, because it directly
accesses the mic's hw:0,0, but at least you have a huge mic boost in
that application.
### my /etc/asound.conf:
pcm.pulseboost {
type asym
playback.pcm {
type pulse
}
#software gain upto 50dB for digital microphone
capture.pcm {
type softvol
slave.pcm "hw:0,0"
#slave.pcm "pulse0"
control {
name "+50dB Mic Capture Volume"
card 0
}
max_dB 50.0
}
}
ctl.pulseboost {
type pulse
}
I also added the line 'load-module module-alsa-source device=pulseboost'
to my /etc/pulse/default.pa, and renamed my ~/.asoundrc to avoid any
conflicts with my previous alsa configuration, but I think that's
unnecessary.
That would probably work with Hardy, Gutsy, Jaunty etc as well. Please
let me know if that works for anyone here.
--
internal mic capture very low volume when routed through pulseaudio
https://bugs.launchpad.net/bugs/275998
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
