Replying to Avatar jb55

pipewire is amazing. with:

$ PIPEWIRE_LATENCY=256/48000 pw-loopback

I can't tell the difference between the direct monitor on my audio interface and the guitar's audio signal going into my computer and out into my headphones again.

A quantum of 256 samples at 48 kHz translates to ~5.33 milliseconds of latency (256 / 48,000), which is close to imperceptible for most use cases.

now just need to use the graphics card to render something on the screen from this incoming audio signal.

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jb55 11mo ago

ok totally nerding out with pipewire now. turns out you can exactly measure the io latency introduced by specific programs by using jack_iodelay. I created a loopback program with cpal in rust, it seems to be adding tons of latency for some reason. had no idea linux had powerful tools like this.

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jb55 11mo ago

was using the wrong backend. got loopback latency down to 1.333 ms with cpal. pretty good! I can work with this.