Re: Microphone not functioning.

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Takashi Iwai <tiwai <at> suse.de> writes:

> > David Vincent-Jones wrote:
> > > Reference:
> > > http://www.alsa-project.org/db/?f=b5c0d636c3870da14ab5f4e4c6f5f64d7c906507
 
> If this still doesn't work, it can be rather the way of testing.
> This digital mic might be a PDM unit with the inverted signal in one
> channel.  Try to record a stereo stream, e.g.
> 
>    arecord -Dhw -fdat -vv foo.wav
> 
> Or, try to pass model=inv-dmic.  If this works, we can cook up a
> correct patch.
> 
> Takashi
> 
> 
The arecord produced only 'white-noise' but no microphone input whatsoever.

Could you please advise how to pass model=inv-dmic .... and I will give that
a try.

David



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