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This Opus 1.3 major release again brings quality improvements, new features, and bug fixes. Changes since 1.2.x include: - Improvements to the VAD and speech/music classification using an RNN - Support for ambisonics coding using channel mapping families 2 and 3 - Improvements to stereo speech coding at low bitrate - Using wideband encoding down to 9 kb/s - Making it possible to use SILK down to bitrates around 5 kb/s - Minor quality improvement on tones - Enabling the spec fixes in RFC 8251 by default - Security/hardening improvements Notable bug fixes include: - Fixes to the CELT PLC - Bandwidth detection fixes Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>