Comment by GeekyBear

There is a more general discussion on the latest Asahi Linux progress report.

> Unfortunately, PDM mics are very omnidirectional and very sensitive. We cannot get by without some kind of beamforming.

https://asahilinux.org/2025/03/progress-report-6-14/

Also, it turned out that some previous work done for the speaker output was reused here for mic input.

> Thanks to the groundwork laid in PipeWire and WirePlumber for speaker support, wiring up a DSP chain including Triforce for the microphones was really simple. We just had to update the config files, and let WirePlumber figure out the rest!