polyvoice
Speaker diarization for Python — who spoke when.
Rust-powered speaker diarization that runs on CPU, fits in ~8.4 MB INT8, and requires zero Python runtime overhead. The wheel uses the same hand-written INT8 kernels as the Rust CLI — no ONNX Runtime. Pipeline v2 with VBx clustering and overlap detection.
Install
pip install polyvoice
Requires Python 3.9+.
Quick start
import polyvoice
# Models auto-download on first run (~8.4 MB INT8)
pipeline = polyvoice.Pipeline.balanced()
result = pipeline.run(samples, sample_rate=16000)
print(f"Speakers: {result['num_speakers']}")
for turn in result["turns"]:
print(f"Speaker {turn['speaker']}: {turn['start']:.1f}s - {turn['end']:.1f}s")
API
polyvoice.Pipeline.balanced(models_cache=None, clusterer=None, vbx_plda_dir=None)— balanced accuracy / speed.polyvoice.Pipeline.mobile(models_cache=None, clusterer=None, vbx_plda_dir=None)— smaller, faster model.clustereris"vbx"(default, matching the CLI) or"ahc". VBx resolves its PLDA params viavbx_plda_dir, then thePOLYVOICE_VBX_PLDA_DIRenv var, then a registry download.pipeline.run(samples, sample_rate)→dictwithnum_speakersandturns.pipeline.run_result(samples, sample_rate)→ typedDiarizationResultwith.to_json()/.to_rttm()/.to_srt()/.to_vtt()/.to_txt()projections.polyvoice.DiarizationResult.from_json(json)— re-hydrate a saved result.
Performance
| Pipeline | VoxConverse-test DER (collar 0, overlap-scored) | Model size |
|---|---|---|
| default (v2+VBx, INT8 kernels) | 13.3% | ~8.4 MB |
Full protocol, collar/averaging disclosure, and competitor numbers: docs/BENCHMARKS.md.
See the full repository for Rust / C / CLI APIs, benchmarks, and development docs.
Release wheels are qualified on CPython 3.12 for Linux x86_64/ARM64, macOS ARM64 and Windows x86_64. Other source-build interpreters are not an implied wheel support promise. See the artifact matrix and checks.
1 maintainer
Metadata
1 maintainer
Release files for polyvoice 1.0.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| polyvoice-1.0.0-cp312-cp312-win_amd64.whl | CPython 3.12 | CPython 3.12 | Windows x86-64 | Details |
| polyvoice-1.0.0-cp312-cp312-manylinux_2_34_x86_64.whl | CPython 3.12 | CPython 3.12 | Linux glibc 2.34+ x86-64 | Details |
| polyvoice-1.0.0-cp312-cp312-manylinux_2_34_aarch64.whl | CPython 3.12 | CPython 3.12 | Linux glibc 2.34+ ARM64 | Details |
| polyvoice-1.0.0-cp312-cp312-macosx_11_0_arm64.whl | CPython 3.12 | CPython 3.12 | macOS 11.0+ ARM64 | Details |
Total release size: 10.1 MB
Release files / polyvoice-1.0.0-cp312-cp312-win_amd64.whl
| Download URL | polyvoice-1.0.0-cp312-cp312-win_amd64.whl |
|---|---|
| Size | 2.4 MB |
| Tags | CPython 3.12 Windows x86-64 |
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| Download URL | polyvoice-1.0.0-cp312-cp312-manylinux_2_34_x86_64.whl |
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| Size | 2.9 MB |
| Tags | CPython 3.12 Linux glibc 2.34+ x86-64 |
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| Tags | CPython 3.12 Linux glibc 2.34+ ARM64 |
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| Tags | CPython 3.12 macOS 11.0+ ARM64 |
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