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Format Description Properties
• ID: fdd000056
• Short name: RealAudio_AAC
• Content categories: sound
• Format category: bitstream encoding, file format
• Last significant update: 2004-05-03
Identification and description 
| Full name | RealAudio, Version 10, AAC Codec |
| Description | Recommended by RealMedia for use when delivered bitrates greater than 128 kb/s. RealMedia promotional literature states "for consumer music services, as well as easy transfer and playback compatibility to the extensive range of portable and mobile devices that support AAC." |
| Production phase | Generally a final-state (end-user delivery) format. |
| Relationship to other formats | |
| Subtype of | RealAudio_10 |
| Contains | AAC (MPEG-2 Advanced Audio Coding) |
Local use
Sustainability factors
Quality and functionality factors (sound)
| Normal rendering | Good support. |
| Fidelity (support for high audio resolution) | Good; promotional literature says that this codec provides "the highest quality listening experience for consumer music services." |
| Support for multiple channels | See RealAudio_10 |
| Support for downloadable or user-defined sounds, samples, and patches | Not applicable |
| Functionality beyond normal video rendering | See RealAudio_10 |
File type signifiers
| Tag type | Value | Note |
| Filename Extension | ra | Note that streaming applications require an associated ram (RealMedia Metafile) file. |
| Internet Media Type | See RealAudio_10 | |
| Magic numbers | See RealAudio_10 | |
Notes
Format specifications
URLs
Print
Useful references
URLs
See RealAudio_10
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Last Updated: Wednesday, 07-Mar-2007 12:40:18 EST
