Opus 1.1 released

[jmvalin]

After more than two years of development, we have released Opus 1.1. This includes:

• new analysis code and tuning that significantly improves encoding quality, especially for variable-bitrate (VBR),


• automatic detection of speech or music to decide which encoding mode to use,


• surround with good quality at 128 kbps for 5.1 and usable down to 48 kbps, and


• speed improvements on all architectures, especially ARM, where decoding uses around 40% less CPU and encoding uses around 30% less CPU.

These improvements are explained in more details in Monty's demo (updated from the 1.1 beta demo). Of course, this new version is still fully compliant with the Opus specification (RFC 6716).