autotuner FX generates silence

[jvantuyl]

autotuner FX generating silence instead of autotuning input.

For example, this works:

live_audio :mic

But this just gives silence:

with_fx :autotuner, mix: 1.0, note: :C do
  live_audio :mic
end

It seems that the output of the FX (before mixing) is always completely silent. I've tried about everything I can think of (including using the opt amp, the opt pre_amp, the opt pre_mix, the opt mix, and set_volume!). It does appear to be at least trying to do something, as mix does mix the input with the silence.

Seems to possibly be the same issue as mentioned in in-thread thread here.

Running Sonic Pi 4.6.0 (Tuplet) installed from installer downloaded from your website on Macbook Pro with Apple M1 Pro chip running on macOS 26.1 (25B78).