Welcome to the ISO/IEC JTC 1/SC 29/WG 11 web site

also know as MPEG, the Moving Picture Experts Group.

The MPEG acronym is also used to indicate a suite of

ISO/IEC digital media standards developed by this JTC 1 Working Group.

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The Moving Picture Experts Group

Audio Coding

Standard: MPEG-1
Standard Part # Part name Description
MPEG-1 3 Audio This standard specifies an audio coding format in 3 hierarchical layers
Standard: MPEG-2
Standard Part # Part name Description
MPEG-2 3 Audio This standard specifies an MPEG-1 Audio backward compatible audio compression format
MPEG-2 7 Advanced Audio Coding This standard specifies an audio compression format
Standard: MPEG-4
Standard Part # Part name Description
MPEG-4 3 Audio This standard specifies a compression format for audio objects
Standard: MPEG-D
Standard Part # Part name Description
MPEG-D 1 MPEG Surround Specification of MPEG Surround audio compression format
MPEG-D 2 Spatial Audio Object Coding Spatial Audio Object Coding
MPEG-D 3 Unified Speech and Audio Coding Specification of a Unified Speech and Audio compression format
MPEG-D 4 Dynamic Range Control A universal dynamic range control standard that supports loudness normalization that is bitrate efficient representation of dynamically compressed versions of an audio signal.