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improve audio resampling by switching from resampy to soxr

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This commit is contained in:
Aleix Conchillo Flaqué
2025-01-21 13:31:33 -08:00
parent f87ecd3a51
commit cacd6ba3fa
3 changed files with 7 additions and 3 deletions
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4
CHANGELOG.md
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@@ -16,6 +16,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- Fixed a type error when using `voice_settings` in `ElevenLabsHttpTTSService`. - Fixed a type error when using `voice_settings` in `ElevenLabsHttpTTSService`.
### Performance
- Replaced audio resampling library `resampy` with `soxr`.
## [0.0.53] - 2025-01-18 ## [0.0.53] - 2025-01-18
### Added ### Added

2
pyproject.toml
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@@ -32,7 +32,7 @@ dependencies = [
"protobuf~=5.29.3", "protobuf~=5.29.3",
"pydantic~=2.10.5", "pydantic~=2.10.5",
"pyloudnorm~=0.1.1", "pyloudnorm~=0.1.1",
"resampy~=0.4.3" "soxr~=0.5.0"
] ]
[project.urls] [project.urls]

4
src/pipecat/audio/utils.py
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@@ -8,14 +8,14 @@ import audioop
import numpy as np import numpy as np
import pyloudnorm as pyln import pyloudnorm as pyln
import resampy import soxr
def resample_audio(audio: bytes, original_rate: int, target_rate: int) -> bytes: def resample_audio(audio: bytes, original_rate: int, target_rate: int) -> bytes:
if original_rate == target_rate: if original_rate == target_rate:
return audio return audio
audio_data = np.frombuffer(audio, dtype=np.int16) audio_data = np.frombuffer(audio, dtype=np.int16)
resampled_audio = resampy.resample(audio_data, original_rate, target_rate) resampled_audio = soxr.resample(audio_data, original_rate, target_rate)
return resampled_audio.astype(np.int16).tobytes() return resampled_audio.astype(np.int16).tobytes()