Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Advanced Audio Coding

Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. It was developed by Dolby, AT&T, Fraunhofer and Sony, originally as part of the MPEG-2 specification but later improved under MPEG-4. AAC was designed to be the successor of the MP3 format (MPEG-2 Audio Layer III) and generally achieves higher sound quality than…

History, Standards & Art

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Advanced Audio Coding. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Contained by
MPEG-4 Part 14, 3GP and 3G2, ISO base media file format and Audio Data Interchange Format (ADIF)
Developed by
AT&T Labs, Dolby Laboratories, Fraunhofer Society, Sony
Filename extension
.3gp, .aac, .adif, .adts, .m4a, .m4b, .m4p, .m4r, .mp4
Free format?
No
Initial release
December 1997; 28 years ago (1997-12)
Latest release
ISO/IEC 14496-3:2019 December 2019; 6 years ago (2019-12)

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

History

Functionality

Licensing and patents

Extensions and improvements

Container formats

Encoders and decoders

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Advanced Audio Coding

Nodes243
Edges242
Triples79
Avg. degree1.99
Density0.00823
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Advanced Audio Coding

Top relations

related to AAC Low Delay · 16
Advanced Audio Coding → AAC, AAC-ELD, AAC-ELDv2, AAC-LD, Amd, Enhanced Low Delay, GSMA, HDVC, High Definition Video Conference, IMS Profile, ISO/IEC, MPEG-2 Advanced Audio Coding, MPEG-4 Low Delay, Service, The, They
related to AAC's improvements over MP3 · 6
Advanced Audio Coding → Improvements, ISO/IEC, MP3, MPEG-1 Audio, MPEG-1 Audio Layer, MPEG-2 Audio
related to Modular encoding · 3
Advanced Audio Coding → AAC, Depending, The MPEG-2 Part
Contained by · 1
Advanced Audio Coding → MPEG-4 Part 14, 3GP and 3G2, ISO base media file format and Audio Data Interchange Format (ADIF)
Developed by · 1
Advanced Audio Coding → AT&T Labs, Dolby Laboratories, Fraunhofer Society, Sony
Filename extension · 1
Advanced Audio Coding → .3gp, .aac, .adif, .adts, .m4a, .m4b, .m4p, .m4r, .mp4
Free format? · 1
Advanced Audio Coding → No
Initial release · 1
Advanced Audio Coding → December 1997; 28 years ago (1997-12)
Internet media type · 1
Advanced Audio Coding → .mw-parser-output .monospaced{font-family:monospace,monospace} audio/aac audio/aacp audio/3gpp audio/3gpp2 audio/mp4 audio/mp4a-latm audio/mpeg4-generic
Latest release · 1
Advanced Audio Coding → ISO/IEC 14496-3:2019 December 2019; 6 years ago (2019-12)

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

aac audio mpeg-4 format mpeg-2 he-aac coding also standard part low support mp3 supports itunes used iso defined sony files

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Advanced Audio CodingContained byMPEG-4 Part 14, 3GP and 3G2, ISO base media file format and Audio Data Interchange Format (ADIF)1.00infobox
Advanced Audio CodingDeveloped byAT&T Labs, Dolby Laboratories, Fraunhofer Society, Sony1.00infobox
Advanced Audio CodingFilename extension.3gp, .aac, .adif, .adts, .m4a, .m4b, .m4p, .m4r, .mp41.00infobox
Advanced Audio CodingFree format?No1.00infobox
Advanced Audio CodingInitial releaseDecember 1997; 28 years ago (1997-12)1.00infobox
Advanced Audio CodingInternet media type.mw-parser-output .monospaced{font-family:monospace,monospace} audio/aac audio/aacp audio/3gpp audio/3gpp2 audio/mp4 audio/mp4a-latm audio/mpeg4-generic1.00infobox
Advanced Audio CodingLatest releaseISO/IEC 14496-3:2019 December 2019; 6 years ago (2019-12)1.00infobox
Advanced Audio CodingOpen format?Yes1.00infobox
Advanced Audio CodingStandardISO/IEC 13818-7, ISO/IEC 14496-31.00infobox
Advanced Audio CodingType of formatLossy audio1.00infobox
iPhoneinstance ofIt is also further supported on various other devices and software0.80text
iPodinstance ofIt is also further supported on various other devices and software0.80text

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.