I've done: sox piano.flac piano.wav gzip -c < piano.wav > piano.wav.gz brotli-encode < piano.wav > piano.wav.brotli ls -l piano2.wav piano2.wav.gz pian

I've done: sox piano.flac piano.wav gzip -c < piano.wav > piano.wav.gz brotli-encode < piano.wav > piano.wav.brotli ls -l piano2.wav piano2.wav.gz piano2.wav.brotli piano2.flac and gotten: -rw-r--r-- 1 robryk users 40056 Jun 14 19:15 piano2.wav.gz -rw-r--r-- 1 robryk users 87656 Jun 14 19:13 piano2.wav -rw-r--r-- 1 robryk users 34221 Jun 14 19:14 piano2.wav.brotli -rw-r--r-- 1 robryk users 52372 Jun 14 19:13 piano2.flac Either I'm doing something wrong or even plain gzip fares better than flac (edit: in this particular case, obviously). brotli-encode compresses using brotli[1] using the font mode. [1] https://code.google.com/p/font-compression-reference/source/browse/#git%2Fbrotli https://code.google.com/p/font-compression-reference/source/...