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Audio capture noisy with WM8960 SoC codec #4384

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tewarid opened this issue Jun 11, 2021 · 1 comment
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Audio capture noisy with WM8960 SoC codec #4384

tewarid opened this issue Jun 11, 2021 · 1 comment

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@tewarid
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tewarid commented Jun 11, 2021

I'm using the WM8960 SoC codec as part of a custom kernel build at version 5.10.31.

Audio playback works with Seeed's ReSpeaker 2-Mics Pi HAT after enabling a few switches that are off, and adjusting the volume

amixer -c1 sset 'Left Input Mixer Boost' toggle
amixer -c1 sset 'Left Output Mixer PCM' toggle
amixer -c1 sset 'Right Input Mixer Boost' toggle
amixer -c1 sset 'Right Output Mixer PCM' toggle
amixer -c1 sset 'Headphone',0 100%,100%

Sound capture however is very noisy, see test.wav.zip produced with

arecord -f cd -Dhw:1 -d5 > test.wav

Seeed's soundcard driver works without issue.

Found no meaningful differences in alsa settings. See asound.state.txt vs seeed-asound.state.txt.
This was referenced Jul 30, 2021
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@AIWintermuteAI AIWintermuteAI mentioned this issue Aug 13, 2021
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AIWintermuteAI referenced this issue Aug 17, 2021
@pelwell
configs: Add SND_SOC_WM8960=m
f800047 
Enable the WM8960 driver module, as used by the wm8960-soundcard
overlay.

See: #4454

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
@tewarid
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tewarid commented Feb 25, 2022

Cannot reproduce issue with kernel version 5.15.24.

@tewarid tewarid closed this as completed Feb 25, 2022
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@tewarid