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*Details: File format summary



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Name MPEG Audio Stream Layer II
Other names  
Identifiers MIME:  audio/mpeg
Library of Congress Format Description Identifier:  fdd000338
PUID:  fmt/198
Classification Audio
Description MPEG Audio Stream Layer II is a lossy audio compression format defined by ISO/IEC 11172-3 standard. The format was initiated by the Digital Audio Broadcast (DAB) project financed by the European Union as a part of the EUREKA research program in the late 1980s. The format first appeared in early 1990s, with its encoding derived from the MUSICAM (Masking pattern adapted Universal Subband Integrated Coding And Multiplexing) audio codec, chosen for its simplicity and error resistance. It is a predecessor to MPEG 1/2 Audio Layer III and often referred to as MP2.
Orientation Text
Byte order  
Related file formats Is previous version of MPEG 1/2 Audio Layer 3 Streaming  
Is supertype of MPEG 1/2 Audio Layer I  
Technical Environment  
Supported until  
Format Risk  
Developed by None.
Supported by None.
Source Digital Preservation Department / The National Archives
Source date 27 Oct 2009
Source description  
Last updated 06 Oct 2022
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