SUCCESS! [was Re: Setting up a microphone]
Angus Leeming
angus.leeming at btopenworld.com
Wed Jun 29 10:47:44 UTC 2005
Angus Leeming wrote:
> Can anyone offer any advice on how to get my microphone working on a
> Fedoda Core 3 machine with a SiS SI7012 sound card? Sound output is fine,
> but I have no input at all.
>
> The microphone is a cheapo telephony headset plugged into the single
> (pink if that matters!) mic port. Everything works well if I reboot the
> machine under Windows.
>
> I'm using the KDE frontend to FC3 rather than the Gnome equivalent.
> krec records as expected from the out_soundcard.
>
> I've fired up kmix and "unmuted" it. Volume level is "high".
> aRts is in full-duplex mode.
>
> However, when I attempt to record to krec, the VU-meter remains
> obstinately unresponsive.
>
> Any clues for a sound-newbie?
> Angus
I can report success and how I achieved it although why it works is beyond
my knowledge!
I set IGain to some reasonably high value and mic volume to zero as this
just feeds input to output:
$ aumix -q
vol 100, 100, P
pcm 71, 71
speaker 0, 0
line 0, 0, P
mic 0, 0, R
cd 0, 0, P
igain 80, 80
line1 0, 0, P
dig1 100, 100
phin 0, 0, P
phout 0, 0, P
video 0, 0, P
kmix reports that "Capture" is on. This is aumix's igain entry.
The magic is in alsamixer. The trick is to turn OFF "Mic As Center/LFE"
| Card: SiS SI7012
? Chip: Realtek ALC650E
? Item: Mic As Center/LFE [Off]
?
? ------ CAPTUR ------
? ???? ?MM? L?MM?R ?MM? ?MM? ?MM?
? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ? ? Mic1 ? ?
? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ? ? ? ?
? ???? ???? ???? ???? ???? ????
? 0<>0 0 0<>0
? Line-In CD Mic <Mic As C>Mic Boos Mic Sele Video
Hope that this helps someone in the future!
Angus
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