Jean-Marc Valin has a B.S., M.S., and Ph.D. in Electrical Engineering from the University of Sherbrooke. He is the primary author of the Speex codec and one of the main authors of the Opus codec, both of which provide a free alternative to patented, proprietary audio codecs. He has also contributed to the Daala and…
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For music encoding Opus has already been shown to out-perform other audio codecs at both 64 kb/s and 96 kb/s . We originally thought that 64 kb/s was near the lowest bitrate at which Opus could be useful for streaming stereo music. However, with variable bitrate (VBR) improvements in Opus 1.1, suddenly 48 kb/s became…