/* begin *

   opus 1.3.1 (Interactive Audio Codec)

   Opus is a totally open, royalty-free, highly versatile audio codec.
   Opus is unmatched for interactive speech and music transmission over
   the Internet, but is also intended for storage and streaming
   applications. It is standardized by the Internet Engineering Task
   Force (IETF) as RFC 6716 which incorporated technology from Skype's
   SILK codec and Xiph.Org's CELT codec.



 * end */