PyWorld: Python Wrapper for WORLD Vocoder

PyWorld is a Python wrapper for the WORLD vocoder, a highly efficient and high-quality speech analysis, manipulation, and synthesis system. It allows users to extract fundamental frequency (f0), harmonic spectral envelope (sp), and aperiodic spectral envelope (ap) from speech, and subsequently synthesize speech from these parameters. The library is currently at version 0.3.5 and is actively maintained, though major releases have been infrequent. [1, 7, 9, 11]