Issue with Reverb on Audio Stream Producing Significant Noise

[djangohenk]

Hello,

I'd like to report an issue I'm experiencing with reverb applied to a live audio stream. I set up an experiment based on the example "Running Pedalboard on Live Audio." Below, I’ve included the Python code I used for reference.

I'm using a Focusrite Scarlett 2i2 Gen 4 audio interface connected to Ubuntu 22.04. For the input, I’m running a recording of an electric drum. The code functions correctly, but the output audio includes substantial unwanted noise alongside the reverb effect. It sounds almost like a vibrating tray of gravel.

I attempted to increase the stream’s sample frequency, which slightly reduces the noise, but it doesn't eliminate it entirely. Any advice on how to address or mitigate this issue would be greatly appreciated.

Thank you!
Henk Schaap

from pedalboard.io import AudioStream

scarlett = 'Scarlett 2i2 4th Gen, USB Audio; Direct hardware device without any conversions'

# Open up an audio stream:
with AudioStream(scarlett, scarlett, ) as stream:

  # Audio is now streaming through this pedalboard and out of your speakers!
  stream.plugins = Pedalboard([
      Reverb(room_size=0.4),
  ])
  input("Press enter to stop streaming...")

# The live AudioStream is now closed, and audio has stopped.