Python Stretch

Python Stretch is a simple library for pitch shifting and time stretching audio, currently at version 0.3.1. It acts as a wrapper for the Signalsmith Stretch C++ Library, providing high-quality audio manipulation capabilities. The library supports both mono and multichannel audio and integrates seamlessly with NumPy arrays, making it compatible with other audio processing libraries like librosa. It is also utilized as the core method for pitch and time stretching in the popular audiomentations library. The project shows active maintenance with recent PyPI uploads for version 0.3.1 in early 2025.