Title :
MPEG-4 high-efficiency AAC coding [Standards in a Nutshell]
Author :
Herre, Jurgen ; Dietz, Mathias
Author_Institution :
Fraunhofer Inst. for Integrated Circuits, Erlangen
fDate :
5/1/2008 12:00:00 AM
Abstract :
The name MPEG-4 high-efficiency AAC (HE-AAC) refers to a family of recent audio coders that was developed by the International Organization for Standardization/International Electrotechnical Commission (ISO/IEC) Moving Picture Experts Group (MPEG) by subsequent extension of the established Advanced Audio Coding (AAC) architecture. These algorithmic extensions facilitate a significant increase in coding efficiency relative to previous standards and other known systems. Thus, they provide a representation for generic audio/music signals that offers high audio quality also to applications limited in transmission bandwidth or storage capacity, such as digital audio broadcasting and wireless music access for cellular phones. This article presents a compact overview of the evolution, technology, and performance of the MPEG-4 HE-AAC coding family.
Keywords :
audio coding; video coding; International Electrotechnical Commission; International Organization for Standardization; MPEG-4 HE-AAC coding family; MPEG-4 high-efficiency AAC coding; Moving Picture Experts Group; advanced audio coding architecture; audio coders; coding efficiency; generic audio/music signals; high audio quality; storage capacity; transmission bandwidth; Audio coding; Bandwidth; Bit rate; Cellular phones; Digital audio broadcasting; IEC standards; ISO standards; MPEG 4 Standard; MPEG standards; Multiple signal classification;
Journal_Title :
Signal Processing Magazine, IEEE
DOI :
10.1109/MSP.2008.918684
