>> I think this message may lack informations, but I have no idea
about
>> what I can give except those one...
>>
> OK, so you've established that your microphone is working. You
don't
> normally want to hear your voice back when you speak into it, so
mute
> the microphone output (but not the input). You should be able to
use
> the sound recorder to still record your voice and play it back but
> you
> won't hear it when speaking.
>
> Skype has a pulldown menu at the bottom left of the skype window.
> Select Options | Sound Devices and try the different microphone
> devices until you find one that works with the Skype test call.
Sounds like I did not explained the problem correctly, so let me
retry.
I have established that the microphone works, yes, because when I
unmute it in alsamixer, I can hear back my voice amplified.
But I did not found any way to use it into skype or mumble (I did
not
tried other softwares).
I do not know how to mute only the microphone output but not the
input?