MPEG-4 aacPlus v2 Encoder for Xtensa HiFi Audio DSPs

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Tensilica’s MPEG-4 aacPlus v2 Encoder Application Package

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Coding Technologies logoThe MPEG-4 aacPlusTM v2 Encoder package for the Xtensa HiFi AudioDSPs  implements 24-bit MPEG-4 aacPlus encoding compliant with ISO/IEC 14496-3 and the 3GPP specification for Enhanced aacPlus, supporting AAC, Spectral Band Replications (SBRTM) and Parametric Stereo (PS). The encoder is a fixed-point implementation written in C and available in either object or source code. Included documentation describes how to incorporate the decoder into a system. Using this package, system developers can integrate an MPEG-4 aacPlus v2 encoder into an SOC without the need for additional optimizations or software development. The same Xtensa HiFi Audio DSPs are used for other Tensilica audio codecs, enabling the development of highly optimized multi-standard audio SOC designs.

Feature Summary

  • Support for Parametric Stereo and Spectral Band Replication
  • Compliant with ISO/IEC 14496-3 and the 3GPP specifications for Enhanced aacPlus

Specifications


Encoder
Clock Rate*
Code Size (ROM)
Table Size (ROM)
RAM**
I/O Buffer RAM
48 Kbps, 48 KHz 34 MHz 128 Kbytes 41 Kbytes 124 Kbytes 9.5 Kbytes
64 Kbps, 48 KHz 34 MHz 128 Kbytes 41 Kbytes 124 Kbytes 9.5 Kbytes


* Average MHz required for single-cycle memory.
** RAM includes persistent, stack and scratch.

aacPlus and SBR are trademarks of Coding Technologies and Coding Technologies reserves all rights to these names.

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