Audio and video encoded with many codecs might be put into an AVI container, although AVI is not an ISO standard.

( ISO / IEC 23003 ) ( e. g., MPEG Surround, SAOC-Spatial Audio Object Coding and USAC-Unified Speech and Audio Coding )

( ISO / IEC 23008 ) Part 1-MPEG Media Transport ; Part 2-High Efficiency Video Coding ; Part 3-3D Audio.

MPEG-2 Audio is defined in ISO / IEC 13818-3

The MPEG-2 Audio section, defined in Part 3 ( ISO / IEC 13818-3 ) of the standard, enhances MPEG-1's audio by allowing the coding of audio programs with more than two channels, up to 5. 1 multichannel.

MPEG-1 Audio Layer II or MPEG-2 Audio Layer II ( MP2, sometimes incorrectly called Musicam or MUSICAM ) is a lossy audio compression format defined by ISO / IEC 11172-3 alongside MPEG-1 Audio Layer I and MPEG-1 Audio Layer III ( MP3 ).

The audio coding algorithm used by the Eureka 147 Digital Audio Broadcasting ( DAB ) system has been subject to the standardization process within the ISO / Moving Pictures Expert Group ( MPEG ) in 1989 – 94.

The DAB standard uses the MPEG-1 Audio Layer II ( ISO / IEC 11172-3 ) for 48 kHz sampling frequency and the MPEG-2 Audio Layer II ( ISO / IEC 13818-3 ) for 24 kHz sampling frequency.

The MUSICAM audio coding was one of 14 proposals for MPEG-1 Audio standard that were submitted to ISO in 1989.

All algorithms for MPEG-1 Audio Layer I, II and III were approved in 1991 as the committee draft of ISO-11172 and finalized in 1992 as part of MPEG-1, the first standard suite by MPEG, which resulted in the international standard ISO / IEC 11172-3 ( a. k. a. MPEG-1 Audio or MPEG-1 Part 3 ), published in 1993.

Further work on MPEG audio was finalized in 1994 as part of the second suite of MPEG standards, MPEG-2, more formally known as international standard ISO / IEC 13818-3 ( a. k. a. MPEG-2 Part 3 or backwards compatible MPEG-2 Audio or MPEG-2 Audio BC ), originally published in 1995.

MPEG-2 Part 3 ( ISO / IEC 13818-3 ) defined additional bit rates and sample rates for MPEG-1 Audio Layer I, II and III.

MPEG-1 Audio Layer II is defined in ISO / IEC 11172-3 ( MPEG-1 Part 3 )

An extension has been provided in MPEG-2 Audio Layer II and is defined in ISO / IEC 13818-3 ( MPEG-2 Part 3 )

The term MP2 and filename extension < tt >. mp2 </ tt > usually refer MPEG-1 Audio Layer II data, but can also refer to MPEG-2 Audio Layer II, a mostly backwards compatible extension which adds support for multichannel audio variable bit rate encoding, and additional sampling rates, defined in ISO / IEC 13818-3.

* Audio / Visual Tutorials for Vergil's Hexameter, by Dale Grote, UNC Charlotte.

Signal Processing is a very mathematically oriented and intensive area forming the core of digital signal processing and it is rapidly expanding with new applications in every field of electrical engineering such as communications, control, radar, TV / Audio / Video engineering, power electronics and bio-medical engineering as many already existing analog systems are replaced with their digital counterparts.

* 1955 – Mick Jones, English singer-songwriter and guitarist ( The Clash, Big Audio Dynamite, General Public, Carbon / Silicon, and London SS )

The Open Sound Control ( OSC ) protocol was developed at the Center for New Music and Audio Technologies ( CNMAT ) of the University of California, Berkely, and is supported by software programs such as Reaktor, Max / MSP and Csound, and some newer hardware controllers, including the Lemur Input Device.

* Foobar 2000: Music Library / Audio Player

** Audio / video RAM: 128 bytes

** RF Audio / Video connector

* Audio: Fraser Cain / Pamela L. Gay-Astronomy Cast.

RTP was developed by the Audio / Video Transport working group of the IETF standards organization.

* 1994 – Roland MS-1: 16 bit AD / DA conversion, First portable digital stereo phrase sampler, with R-DAC ( Roland Digital Audio Coding ).

* Audio: Stereo 10-bit PWM ( Pulse Width Modulation ) mixing with Mega Drive / Genesis sound for a total of 12 audio channels of varying capability, 20 with the addition of a Mega-CD / Sega CD.

* Audio: Cain / Gay-Astronomy Cast Tidal Forces-July 2007.

* RFC 5215-RTP Payload Format for Vorbis Encoded Audio ( audio / vorbis, audio / vorbis-config )

* Audio mixing console, an electronic device for combining, routing, and changing the level, tone, and / or dynamics of two or more audio signals

* Dynamic Performance Testing of Digital Audio D / A Converters

* 1995, U. S., Gallant / Publishing Mills ( ISBN 1-879371-52-9 ), Pub date December ?, 1995, Audio book cassette

Audio CDs can be ripped as WMA or WMA 10 Pro ( WMA 10 Pro in WMP 11 and later ) at 48, 64, 96, 128, 160 and 192 kbit / s, WMA lossless ( 470 to 940 kbit / s ) ( 9 Series on XP and later ), WMA variable bitrate ( from 40-75 kbit / s up to 240-355 kbit / s ), MP3 at 128, 192, 256 and 320 kbit / s, or uncompressed WAV ( WAV ripping in WMP 11 and later ).

The first edition of the Red Book was released in 1980 by Philips and Sony ; it was adopted by the Digital Audio Disc Committee and ratified as IEC 60908 ( published in 1987 ).

It is also known as AES / EBU and is published by the Audio Engineering Society ( AES ) and as part of IEC 60958.

MPEG-4 Part 3 or MPEG-4 Audio ( formally ISO / IEC 14496-3 ) is the third part of the ISO / IEC MPEG-4 international standard developed by Moving Picture Experts Group.

* Formats with lossy compression, such as MP3, Vorbis, Musepack, AAC, ATRAC and Windows Media Audio Lossy ( WMA lossy )).

* Audio codec: G. 726, G. 711, G. 722 ( wideband ), G. 729. 1 ( wideband ) and MPEG-4 ER LD AAC ( wideband and super-wideband )

AAC is more efficient than the previous MPEG audio standards, and is in some ways less complicated than its predecessor, MPEG-1 Audio, Layer 3, in that it does not have the hybrid filter bank.

; Part 7: Advanced Audio Coding ( AAC ).

AAC ( Advanced Audio Coding ) was standardized as an adjunct to MPEG-2 ( as Part 7 ) before MPEG-4 was issued.

* Audio formats: Vorbis, AAC, AAC +, M4A, MP3, AMR-NB, AMR-WB, RealAudio, WMA, a-law, u-law and audio containers AIFF, WAV, AU

Dolby is part of a group of organizations involved in the development of AAC ( Advanced Audio Coding ), part of MPEG specifications, and considered the successor to MP3.

In November 2003, Johansen released QTFairUse, an open source program which dumps the raw output of a QuickTime Advanced Audio Coding ( AAC ) stream to a file, which could bypass the Digital Rights Management ( DRM ) software used to encrypt content of music from media such as those distributed by the iTunes Music Store, Apple Computer's online music store.

* Audio formats: AAC, AC3, ALAC, AMR, DTS, FLAC, Intel Music Coder, Monkey's Audio, MP3, Musepack, RealAudio, Shorten, Speex, Vorbis, WMA, Bink

Monkey's Audio does not discard data during the process of encoding, unlike lossy compression methods such as AAC, MP3, Vorbis and Musepack.

Like any lossless compression scheme, Monkey's Audio format takes up several times as much space as lossy compression formats like AAC, MP3 and Vorbis.

As a result of these advantages, the MDCT is employed in most modern lossy audio formats, including MP3, AC-3, Vorbis, Windows Media Audio, ATRAC, Cook, and AAC.

The research results of his dissertation are the basis of MPEG-1 Layer 3 ( mp3 ), MPEG-2 Advanced Audio Coding ( AAC ) and most other modern audio compression schemes.

The MPEG-4 Part 3 consists of a variety of audio coding technologies-from lossy speech coding ( HVXC, CELP ), general audio coding ( AAC, TwinVQ, BSAC ), lossless audio compression ( MPEG-4 SLS, Audio Lossless Coding, MPEG-4 DST ), a Text-To-Speech Interface ( TTSI ), Structured Audio ( using SAOL, SASL, MIDI ) and many additional audio synthesis and coding techniques.

* Audio formats supported natively: MP1, MP2, MP3, MPC, AAC, Ogg Vorbis, FLAC / Ogg FLAC, ALAC, WavPack, WAV, AIFF, AU, SND, CD, Opus

< tr >< th colspan = 2 > Audio coding </ th > < th colspan = 2 > MPEG-2 Audio ( AAC )</ th ></ tr >

In contrast, Japanese ISDB HDTV broadcasts use MPEG's Advanced Audio Coding ( AAC ) as the audio codec, which also allows 5. 1 audio output.

* Audio formats: AAC, AC3, ALAC, AMR, FLAC, MP3, RealAudio, Shorten, Speex, Vorbis, WMA

Audio Video Standard ( AVS ) is a compression standard for digital audio and video, and is competing with H. 264 / AAC to potentially replace MPEG-2.

; Audio formats: AAC, AC3, ALAC, AMR, DTS, DV Audio, XM, FLAC, MACE, Mod, MP3, PLS, QCP, QDM2 / QDMC, RealAudio, Speex, Screamtracker 3 / S3M, TTA, Vorbis, WavPack, WMA ( WMA 1 / 2, WMA 3 partially ).