Summary

Update new audio attacks to the AudioEffects class and update the configuration in default.yaml to reflect the newly added effects.

New Audio Effects Added:

1. Pitch Shift: Changes the pitch of the audio signal by a given number of steps without altering the duration.
2. Reverse: Reverses the entire audio signal, simulating a backward playback.
3. Clipping: Clips the audio signal to a specific threshold, introducing distortion.
4. Time Stretch: Changes the duration of the audio without modifying the pitch, useful for testing stretched audio scenarios.
5. Tremolo: Applies amplitude modulation to create a tremolo effect.
6. Flanger: Introduces a delayed version of the signal with periodic modulation, creating a swirling sound effect.
7. Bit Crusher: Reduces the bit depth of the audio signal, introducing digital distortion for lo-fi simulation.
8. Ring Modulation: Multiplies the audio signal with a sine wave, resulting in a metallic sound effect.
9. Granulate: Breaks the audio into overlapping grains, creating a stutter-like or granulated effect.

Changes Made:

1. AudioEffects Class:

   • Add new methods for the above effects to expand the transformation possibilities.
   • Ensure all new methods return audio tensors consistent with the existing interface.

2. default.yaml Configuration File:

   • Add configurations for each of the newly added audio effects.
   • Included default parameters such as sample rates, modulation frequencies, bit depths, etc.
   • Updated aug_weights to include the new effects, with default weights for augmentation selection during evaluations.

Ref: facebookresearch/audioseal#57