- aconvert
- Convert the input audio format to the specified formats.
- aformat
- Convert the input audio to one of the specified formats.
- anull
- Pass the audio source unchanged to the output.
- aresample
- Resample the input audio to the specified sample rate.
- ashowinfo
- Show a line containing various information for each input audio frame.
- earwax
- Make audio easier to listen to on headphones.
- pan
- Mix channels with specific gain levels.
- volume
- Adjust the input audio volume.