HE-AAC

Fraunhofer Institute for Integrated Circuits

HE-AAC

Overview

HE-AAC Logo 

MPEG-4 HE-AAC is the low bit-rate codec in the AAC family and integrates the functionality of the AAC-LC audio codec with Spectral Band Replication (SBR) bandwidth expansion tool. MPEG-4 HE-AAC v2 adds the Parametric Stereo (PS) feature to HE-AAC for even lower bit-rates.

Qualitygood quality
BitrateHE-AAC: 32 to 48 kbit/s mono
HE-AAC v2: 16 to 24 kbit/s mono
for good quality audio
Sampling rates24 to 96 kHz
Channelsmono, stereo, multi-channel (e.g. 5.1, 7.1)
Used inDVB, ISDB, ARIB, ATSC-M/H, DAB+, DRM+, DRM, DVB-H, DMB, MediaFLO, 3GPP, XM Radio, mobile phones, audio and video streaming services

 

Applications

All applications that rely on very low bit-rate audio for transmission over channels with limited capacity. Examples include mobile music downloads/streaming to handheld devices, video streaming services to PCs and consumer electronics devices and a wide range of broadcasting services.

 

Availability

Fraunhofer IIS is the leading independent provider of optimized HE-AAC implementations. HE-AAC Encoder and Decoder object and source code are immediately available for:

  • PC (Win/MacOS X/Linux)
  • Power PC processors
  • TI C64, OMAP, DaVinci
  • TI C67
  • ARM
  • MIPS
  • Freescale 563xx (through third party)
  • ADI Blackfin
  • Starcore, TI C55 und Freescale Coldfire (only source code)
  • Apple iPhone® SDK 
For a quick overview, the pdf file below provides a summary of our product offering: Preisanfrage

Patent licensing:
A patent licensing program is administered by Via Licensing Corporation. Please visit www.vialicensing.com for more information or contact info@vialicensing.com .

 

Videos

A typical day in our AAC world

AAC-World

Co-developed by Fraunhofer IIS, the AAC audio codec family enables today's media world.





 

More information