MPEG-D

ISO/IEC 23003
MPEG Audio Technologies

A suite of standards for Audio technologies that do not fall in other MPEG standards

Parts

MPEG Surround
Part: 1
Specification of MPEG Surround audio compression format

Spatial Audio Object Coding (SAOC)
Part: 2
Spatial Audio Object Coding

Unified speech and audio coding
Part: 3
Specification of a Unified Speech and Audio compression format

Dynamic range control
Part: 4
A universal dynamic range control standard that supports loudness normalization that is bitrate efficient representation of dynamically compressed versions of an audio signal.

Uncompressed audio in MPEG-4 file format
Part: 5
To specify how uncompressed (PCM samples) audio data can be stored