Problem with mic

Moderator: flatmax

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plummy
Posts: 3
Joined: Thu Jul 05, 2018 4:28 am

Problem with mic

Post by plummy » Thu Jul 05, 2018 4:33 am

Hi,

Using the command `arecord -l' I can see the device:

**** List of CAPTURE Hardware Devices ****
card 0: audioinjectorpi [audioinjector-pi-soundcard], device 0: AudioInjector audio wm8731-hifi-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0

However, if I try to record using 'arecord -d 5 -f cd test.wav' I get this output:

Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

But playing back using 'aplay test.wav' just plays silence.

I know playback is working fine using a test wav file. I have made sure the polarity is correct on electret mic. Is there a setup I may have missed to enable the mic?

Many thanks

peterh4000
Posts: 2
Joined: Sat Jun 30, 2018 7:14 am

Re: Problem with mic

Post by peterh4000 » Mon Jul 09, 2018 9:28 am

If you run alsamixer (from a command line)
and f6 to select the sound card
is your input mux set to MIC or LINE in?

just a thought...

-Peter-

plummy
Posts: 3
Joined: Thu Jul 05, 2018 4:28 am

Re: Problem with mic

Post by plummy » Thu Jul 12, 2018 12:15 am

Thanks for the reply.

Im not sure why but running the audioInjector-setup.sh fixed it for me, which has probably set this for me.

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