- Extension
- .aac
- .opml
- Format
- Binary
- Text
- Category
- Audio
- Document
- Developer
- Bell Labs, Fraunhofer Institute, Dolby Labs, Sony and Nokia
- Dave Winer
- 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.
- OPML (Outline Processor Markup Language) is an XML-based format used to exchange outline-structured information. It is most commonly used to share lists of web feed subscriptions (such as RSS or Atom feeds) between feed readers and aggregators.
- MIME Type
- audio/x-aac
- text/x-opml
