- Extension
- .aac
- .opus
- Format
- Binary
- Binary
- Category
- Audio
- Audio
- Developer
- Bell Labs, Fraunhofer Institute, Dolby Labs, Sony and Nokia
- Xiph.Org
- Description
- Compressed audio file similar to an .MP3 file, but offers several performance improvements; examples include a higher coding efficiency for both stationary and transient signals, a simpler filterbank, and better handling of frequencies above 16 kHz; maintains quality nearly indistinguishable from the original audio source.
- An OPUS file is an audio file created in the Opus format (also called "Ogg Opus"), a lossy audio format developed for Internet streaming. It uses both SILK (used by Skype) and CELT (from Xiph.Org) codecs and supports variable bit rates from 6 kb/s to 510 kb/s.
- MIME Type
- audio/x-aac
- audio/opus
