This Opus 1.3-rc release candidate of the upcoming Opus 1.3 includes:
- Making it possible to use SILK down to bitrates around 5 kb/s
- Using wideband encoding down to 9 kb/s
- Improving security (including a new –enable-hardening option)
- Minor quality improvement on tones
- Improving Ambisonics support (still experimental)
- Minor bug fixes
Again, we’re providing experimental Windows binaries built with 1.3-rc and the upcoming opus-tools and libopusenc.