The Xiph.Org Foundation has recently announced the release of Opus 1.2 open-source audio codec with ever lower high-quality audio bitrate for music (32 Kbps) and speech (12 Kbps), faster encoding and decoding, and other tweaks to the standard and library. If you’ve never heard about Opus or need to refresh your memory, you may want to read my previous article about Opus Open Source Audio Codec.
Speech has different requirements from music, and the developers improved the SILK and CELT encoders respectively handling up to 8 kHz, and 8 to 20 kHz in what they call hybrid mode. Opus 1.2 is said to add hybrid-specific tuning for both spreading and time-frequency resolution switching and disables the use of the allocation trim.
Besides improvements in quality at the same bitrate or lower bitrate with the same quality, the encoder and decoders now operate faster on both ARM and x86 targets in most cases.
If you’d like to try it yourself, you can build the library and sample by adapting Opus build instructions to libopus 1.2.1.
Via XDA Developers
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
One Reply to “Opus 1.2 Allows for High Quality Stereo Music @ 32 Kbps, Speech @ 12 Kbps”
is it better than he-aac v2 though ?