PyWavelets

PyWavelets is a free, open-source Python library for wavelet transforms. It provides 1D, 2D, and nD forward and inverse Discrete Wavelet Transforms (DWT and IDWT), Stationary Wavelet Transforms (SWT), Wavelet Packet decomposition, and Continuous Wavelet Transforms (CWT). It combines a simple high-level interface with low-level C and Cython performance and is widely used in signal processing, image compression, and noise removal. The current version is 1.9.0 and it has an active release cadence, with minor updates and new features being released regularly.