Presenting Opus 1 . 3

The Opus Audio Codec will get another major update with the discharge of version 1 . 3 ( demo ).

Opus is a completely open, royalty-free audio codec which you can use for all audio applications, from songs streaming and storage to top quality video-conferencing and VoIP. Six many years after its standardization by the IETF, Opus is now included in all main browsers and mobile operating systems. It is often adopted for a wide range of applications, and it is the default WebRTC codec.

This release brings high quality improvements to both speech plus music compression, while remaining completely compatible with RFC 6716. Here’ s i9000 a few of the upgrades that users plus implementers will care about the most.

speech compared to music probabiities graph with opus 1 . 3

Opus 1 . 3 includes a completely new speech/music detector. It is based on the recurrent neural network and is both simpler and more dependable than the detector that has been used considering that version 1 . 1 . The new metal detector should improve the Opus performance upon mixed content encoding, especially on bitrates below 48 kb/s.

There are also many improvements with regard to speech encoding at lower bitrates, both for mono and stereo system. The demo contains many more information, as well as some audio samples. This particular new release also includes a cool brand new feature: ambisonics assistance. Ambisonics can be used to encode 3D sound soundtracks for VR and 360 videos.

You can read every detail of The Release of Opus one 3 .

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Jean-Marc Valin has a M. S., M. S., and PhD in Electrical Engineering from the University or college of Sherbrooke. He is the primary writer of the Speex codec and one from the main authors of the Opus codec. His expertise includes speech plus audio coding, speech recognition, replicate cancellation, and other audio-related topics. They are currently employed by Mozilla to work upon next-generation multimedia codecs.

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