Mic on Raspberry Pi - no output from Gstreamer

kotaro kotaro-chan at hotmail.de
Fri Jun 5 09:24:05 UTC 2020


i facing same Problem,
i try to use I2S mems Microphone on Raspi-Zero

gst-launch-1.0 alsasrc device=plughw:0,0 !
audio/x-raw,format=S16LE,layout=interleaved,rate=48000,channels=1 ! volume
volume=10 ! volume volume=3 ! opusenc ! oggmux ! filesink location=test.ogg

does not work. 
i use arecord -l and get:
card 0: sndrpisimplecar [snd_rpi_simple_card], device 0:
simple-card_codec_link snd-soc-dummy-dai-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

i get same problem whileusing arecord to a wave file i get an Sound, so i
think that i2s MEMS work probertly.
But when using gst-launch-1.0 alsasrc i get only silent.

Did anyone clear these problem?

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