Tensilica’s MPEG-4 aacPlus v1 Decoders Application
Package 
The MPEG-4 aacPlusTM v1 Decoder package for the Xtensa
HiFi 2 Audio Engine implements 24-bit MPEG-4 aacPlus v1
decoding compliant with ISO/IEC 14496-3 and the 3GPP specification for Enhanced aacPlus, supporting AAC and Spectral Band Replication (SBRTM) in two versions. One version supports mono and stereo configurations and the other version extends support up to 5.1 and 7.1 channels.
The decoders are fixed-point implementations written in C and available in either object or source code. Included documentation describes how to incorporate the decoder into a system. Using one of these packages, system developers can integrate an MPEG-4 aacPlus v1 decoder into an SOC without the need for additional optimizations or software development. The same Xtensa HiFi 2 Audio Engine is used for other Tensilica audio codecs, enabling the development of highly optimized multi-standard audio SOC designs.
Feature Summary
- Support for SBR
- Compliant with ISO/IEC 14496-3 and the 3GPP specifications for Enhanced aacPlus
- Two version - one for 1-2 channels and one for 5.1 and 7.1 channels
Specifications - Stereo - 64 Kbps with 44.1 KHz Sample Rate
| 19 MHz |
63
Kbytes |
31
Kbytes |
47.4
Kbytes |
|
Specifications - 7.1 channel- 192 Kbps with 48 KHz Sample Rate
| 72 MHz |
63
Kbytes |
31
Kbytes |
141.4
Kbytes |
|
* Average MHz (clock rate) required for single-cycle memory.
** Total RAM includes persistent, stack and scratch.
aacPlus and SBR are trademarks of Coding Technologies and Coding Technologies reserves all rights to these names.
|
