alsa-project/alsa-utils issue #291 was edited from willangley:

Hi alsa-utils team!

I'm using `alsaloop`s on a Raspberry Pi 5 as part of a slightly ridiculous signal chain:

* Yamaha P-525 keyboard * USB C-to-A cable * Raspberry Pi 5 * USB A-to-B cable * ESI U24XL * SPDIF in/out * Focusrite Clarett+ 4Pre * ... * MacBook Pro

[Why? The analog Aux In/Aux Out on the keyboard have an always on loopback connection, which is undesirable when playing to a video meeting. The USB port has user controllable loopback.]

Two alsaloop processes run on the Pi, one moving sound from the computer to the piano, one moving sound from the piano to the computer. Both run under `supervisord`.

I've got them running at acceptable latency — RTL Utility says 40ms from my MacBook Pro.

But I haven't been able to get any of the high quality resampling options working -- everything other than add/drop stops passing sound within a few seconds. I'm surprised; this Pi should be powerful enough to handle this. Any ideas how to troubleshoot it?

Thank you! Will

Issue URL : https://github.com/alsa-project/alsa-utils/issues/291 Repository URL: https://github.com/alsa-project/alsa-utils