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Opus is a general purpose patent-free lossy audio compression format. It is a newer and better formant than Vorbis. It was developed by the Xiph.Org Foundation and standardized by the Internet Engineering Task Force, designed to efficiently code speech and general audio in a single format, while remaining low-latency enough for real-time interactive communication and low-complexity enough for low-end embedded processors. Praat supports Ogg Opus decoding through open source code made available at https://opus-codec.org/downloads/. We used opus-1.3.1 and opusfile-0.12. (see also §1.6)
© djmw, January 2, 2021