libopus 1.1

Opus 1.1 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
  • 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).

Source code: opus-1.1.tar.gz