samplerate
Monolithic python wrapper for libsamplerate based on pybind11 and NumPy
Decision gist · record as of 2026-08-14
Yes, if you need high-quality audio resampling. The package is actively maintained, has no known vulnerabilities, uses permissive licenses, and provides convenient access to a well-established C library. Medium install friction is acceptable given the availability of pre-built wheels for common platforms. Not necessary if you only need basic resampling or are on an unsupported architecture without a C++ compiler.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires C++14 compiler if building from source on platforms without pre-built wheels; binary wheels available for common platforms.
- Medium install friction due to compiled C++ bindings, but pre-built wheels cover macOS (x86_64, arm64), Linux (x86_64, aarch64), and Windows (x86_64).
- Last release 145 days ago; maintenance status is active.
License · maintenance · safety
MIT (permissive) — MIT license (permissive); the bundled libsamplerate is licensed under 2-clause BSD as of version 0.1.9, both permissive and compatible with most projects.
last release 2026-03-22 (145 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 289,126 downloads/mo, #8,006 on PyPI
Alternatives
Verify before relying
import numpy as np
import samplerate
input_data = np.sin(2 * np.pi * 5 * np.arange(1000) / 1000.)
output_data = samplerate.resample(input_data, ratio=1.5, converter='sinc_best')- Whether the package is suitable for real-time audio processing or only batch resampling.
- Performance characteristics and quality trade-offs between the three converter options (sinc_best, sinc_fastest, etc.).
- Typical use cases for sample rate conversion (e.g., converting between specific audio formats or standards).
What it is and what it does
samplerate is a Python wrapper around libsamplerate (Secret Rabbit Code), a high-quality audio sample rate conversion library. It exposes three APIs for resampling: a Simple API for one-shot conversion of large chunks, a Full API for processing successive chunks of data, and a Callback API where input is provided by a callback function. The library bundles libsamplerate statically using pybind11 and requires numpy as its only runtime dependency.
The package is designed for developers and researchers working with audio signal processing who need to convert audio between different sample rates while maintaining high fidelity. It supports modern Python versions (3.7+) and provides pre-built wheels for common platforms (macOS, Linux, Windows on x86_64 and aarch64 architectures), though building from source on other platforms requires a C++14 compiler.
Use it for
- Convert audio recordings between different sample rates for compatibility with target systems or workflows.
- Resample streaming audio chunks in processing pipelines using the Full or Callback API.
- Perform high-quality audio format conversion in scientific audio analysis or music processing workflows.
- Implement sample rate adaptation in audio applications that need to handle multiple input sample rates.
- Process audio signals in signal processing research where libsamplerate's quality algorithms are required.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need high-quality audio resampling.
The package is actively maintained, has no known vulnerabilities, uses permissive licenses, and provides convenient access to a well-established C library. Medium install friction is acceptable given the availability of pre-built wheels for common platforms. Not necessary if you only need basic resampling or are on an unsupported architecture without a C++ compiler.
Install
samplerate on PyPI
Before you install
Medium install friction due to compiled C++ bindings, but pre-built wheels cover macOS (x86_64, arm64), Linux (x86_64, aarch64), and Windows (x86_64). Last release 145 days ago; maintenance status is active.
Requires C++14 compiler if building from source on platforms without pre-built wheels; binary wheels available for common platforms.
License in practice
MIT license (permissive); the bundled libsamplerate is licensed under 2-clause BSD as of version 0.1.9, both permissive and compatible with most projects.
Quickstart
import numpy as np
import samplerate
input_data = np.sin(2 * np.pi * 5 * np.arange(1000) / 1000.)
output_data = samplerate.resample(input_data, ratio=1.5, converter='sinc_best')Verify before relying
- Whether the package is suitable for real-time audio processing or only batch resampling.
- Performance characteristics and quality trade-offs between the three converter options (sinc_best, sinc_fastest, etc.).
- Typical use cases for sample rate conversion (e.g., converting between specific audio formats or standards).
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.7 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | 1 packagenumpy |
| Maintenance | Actively maintained 145 days since the last release |
| First released | |
| Downloads | 289,126 / month, #8,006 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 3 - AlphaEnvironment :: ConsoleIntended Audience :: DevelopersIntended Audience :: Science/ResearchOperating System :: OS IndependentProgramming Language :: Python :: 3Topic :: Multimedia :: Sound/AudioTopic :: Scientific/Engineering |
Evidence: samplerate-0.2.4-cp310-cp310-macosx_10_9_universal2.whl; samplerate-0.2.4-cp310-cp310-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl; samplerate-0.2.4-cp310-cp310-win_amd64.whl; samplerate-0.2.4-cp311-cp311-macosx_10_9_universal2.whl; samplerate-0.2.4-cp311-cp311-manylinux_2_24_aarch64.manylinux_2_28_aarch64.whl; samplerate-0.2.4-cp311-cp311-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl; samplerate-0.2.4-cp311-cp311-win_amd64.whl; samplerate-0.2.4-cp312-cp312-macosx_10_13_universal2.whl; samplerate-0.2.4-cp312-cp312-manylinux_2_24_aarch64.manylinux_2_28_aarch64.whl; samplerate-0.2.4-cp312-cp312-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl; samplerate-0.2.4-cp312-cp312-win_amd64.whl; samplerate-0.2.4-cp313-cp313-macosx_10_13_universal2.whl; samplerate-0.2.4-cp313-cp313-manylinux_2_24_aarch64.manylinux_2_28_aarch64.whl; samplerate-0.2.4-cp313-cp313-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl; samplerate-0.2.4-cp313-cp313-win_amd64.whl; samplerate-0.2.4-cp314-cp314-macosx_10_15_universal2.whl; samplerate-0.2.4-cp314-cp314-manylinux_2_24_aarch64.manylinux_2_28_aarch64.whl; samplerate-0.2.4-cp314-cp314-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl; samplerate-0.2.4-cp314-cp314-win_amd64.whl; samplerate-0.2.4-cp39-cp39-macosx_10_9_universal2.whl
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