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Any plans for mircophone Noise supression? #3069

Closed joakim-tjernlund closed 2 years ago

lgirdwood commented 3 years ago

@joakim-tjernlund can you be more specific ? @singalsu fyi.

joakim-tjernlund commented 3 years ago

Not really, I only know that on our new Lenovo T14 with SOF one can hear some noise(white?) when using the built-in mic.

plbossart commented 3 years ago

@joakim-tjernlund please file an issue in the Linux tree and add your dmesg log with the following file added as /etc/modprobe.d/sof-dyndng.sof sof-dyndbg.conf.txt

You may be experiencing known issues with the 2 mic support on some Lenovo platforms who use the PDM1 interface.

see e.g. https://github.com/thesofproject/linux/issues/2795

singalsu commented 3 years ago

@joakim-tjernlund There's a microphone beamformer and if properly set up it will attenuate a bit the noise but it also sets a fixed direction for microphones. Out-of-beam directions get attenuation. It's feasible with notebooks if the direction of interest is towards camera look direction. Currently that needs a custom topology for specific microphones distance and microphones count. If you are willing to experiment with non-mature component I can help to set it up. There will be later in future a noise suppressor for voice.

If you get sound from microphone capture it's worth to check that every volume/gain is sane. E.g. no gains competing against each other. If can report which topology is loaded (or attach dmesg) and which device you are capturing would help.

marc-hb commented 3 years ago

@joakim-tjernlund please file an issue in the Linux tree

Transferring to Linux tracker

plbossart commented 2 years ago

no update in 6 months, closing.