Glitch artifacts in sound when enabled

[xmacex]

There seems to be audio glitch artifacts when this thing is enabled. Someone please help get rid of them, I have not been able to find their cause and what to do with them. Maybe tune the alsa_in and alsa_out?

Or alternatively reconceptualize them as an opportunity rather than a problem, and as input into creative process. They sound good with reverb on them ♫.

https://soundcloud.com/user-976929187/norns-glitching-then-running-alsa_in-and-alsa_out

[xmacex]

Ok I see that alsa_in and alsa_out eat a lot of CPU.

From top

Is this caused by resampling because I think norns runs at 48k sample rate, OP-Z at 44.1k?

[xmacex]

One possible fix would be to reduce functionality and only use alsa_in. Am I using OP-Z as an output device? Not for now, but I guess I could.

[xmacex]

Another idea to try is to bring down norns from 48k to 44.1k sample rate. In /etc/systemd/system/norns-jack.service

ExecStart=/usr/bin/jackd -R -P 95 -d alsa -d hw:0 -r 48000 -n 3 -p 128 -S -s

[xmacex]

Also turn off OP-Z USB charging, this helps.

[xmacex]

Do a systematic profiling.

[catfact]

Another idea to try is to bring down norns from 48k to 44.1k sample rate. In /etc/systemd/system/norns-jack.service

ExecStart=/usr/bin/jackd -R -P 95 -d alsa -d hw:0 -r 48000 -n 3 -p 128 -S -s

that's not going to work with the monome snd driver

[xmacex]

Replacing with Zita-ajbridge might help #12. According to Science also better sound quality.