This Opus 1.2-beta beta release of the upcoming Opus 1.2 fixes a bug in surround encoding causing very bad quality on signals beyond a certain amplitude. Thanks to Franziska Trojahn and others from HfT Leipzig for finding this issue through their listening test (the quality of the two bad files in the paper should now be similar to the others). Also included in this release are some more ARM Neon optimizations and some low-bitrate quality tuning.
https://opus-codec.org/release/dev/2017/05/24/libopus-1_2_beta.html
Opus-tools v0.1.10-9-gbd65450 (using libopus 1.2-beta-9-g73808cf8)
Built on May 27, 2017, GCC 6.3.0
https://git.xiph.org/?p=opus.git;a=summary
https://git.xiph.org/?p=opus-tools.git;a=summary
Opus-tools v0.1.10-9-gbd65450 (using libopus 1.2-beta-10-gaef369f5)
Built on May 31, 2017, GCC 6.3.0
https://git.xiph.org/?p=opus.git;a=summary
https://git.xiph.org/?p=opus-tools.git;a=summary
13 days ago Jean-Marc Valin Fix entropy coder doc
https://git.xiph.org/?p=opus.git;a=summary
:D