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Mic audio recording do not work over 3.5mm CM3 I/O jack #6

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Sfinx opened this issue Feb 15, 2024 · 3 comments
Open

Mic audio recording do not work over 3.5mm CM3 I/O jack #6

Sfinx opened this issue Feb 15, 2024 · 3 comments

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@Sfinx
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Sfinx commented Feb 15, 2024

The recording contains noise + cracks. cmd used:

arecord -D plughw:CARD=rockchiprk817,DEV=0 -V mono 1.wav
@Sfinx
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Sfinx commented Feb 15, 2024

Image used: debian b27 xfce

@usui95
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usui95 commented Feb 18, 2024

may be try this command
arecord -D plughw:CARD=rockchiprk817,DEV=0 -V mono -f S16_LE -r 16000 -d 20 1.wav

@Sfinx
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Sfinx commented Feb 18, 2024

It doesn't matter what bitrate or format is used with plughw - the MICBIAS voltage is absent at rk817 MIC input. It is definitely driver issue.

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@Sfinx @usui95