BitCrush
Added in v0.35.0
Apply a bit crush effect to the audio by reducing the bit depth. In other words, it reduces the number of bits that can be used for representing each audio sample. This adds quantization noise, and affects dynamic range. This transform does not apply dithering.
For more information, see
- Resolution reduction on Wikipedia
- Intro to bit reduction by NTNU, Department of Music, Music Technology
Input-output example
Here we reduce the bit depth from 16 to 6 bits per sample
| Input sound | Transformed sound |
|---|---|
Usage example
from audiomentations import BitCrush
transform = BitCrush(min_bit_depth=5, max_bit_depth=14, p=1.0)
augmented_sound = transform(my_waveform_ndarray, sample_rate=16000)
BitCrush API
min_bit_depth:int• unit: bits • range: [1, 32]- Minimum bit depth the audio will be "converted" to
max_bit_depth:int• unit: bits • range: [1, 32]- Maximum bit depth the audio will be "converted" to
p:float• range: [0.0, 1.0]- Default:
0.5. The probability of applying this transform.