; Part 7: Advanced Audio Coding ( AAC ).

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.

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.

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

The Nokia 6230i features an integrated music player which can play MP3 and AAC ( Advanced Audio Coding ) format files.

Air Cadets ranging in age from 15 – 18 train there on the AAC ( Advanced Aviation Course ) or Glider Pilot Scholarship programs.

It is based on psychoacoustic lossy compression, the same principle being used in most modern lossy audio encoders such as MP3 and Advanced Audio Coding ( AAC ), and it allowed both broadcast automation and recording to hard drives.

Whereas the AAC ( Advanced Audio Coding ) family of codecs are publicly documented standards, the HDC codec exists only within the HD Radio system, and is an iBiquity trade secret.

Some musicblogs offer music in Advanced Audio Coding ( AAC ) or Ogg formats.

* Freeware Advanced Audio Decoder, an AAC audio decoder, superseded by new version: FAAD2

Nearly all players are compatible with the MP3 audio format, and many others support Windows Media Audio ( WMA ), Advanced Audio Coding ( AAC ) and WAV.

FAAC or Freeware Advanced Audio Coder is a software project which includes the AAC encoder FAAC and decoder FAAD2.

FAAD2 is Freeware Advanced Audio ( AAC ) Decoder including SBR decoding.

Mobile music is normally formatted as an AAC ( Advanced Audio Coding ) file or an MP3, and comes in several different formats.

There are 3 performance levels in AAC agility-Starters, Advanced, and Masters.

* 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.

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

* 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 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 >

* 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 ).

CT-aacPlus combined MPEG-2 AAC LC with the Coding Technologies invented spectral band replication ( SBR ).

It is based on the AAC LC, SBR and Parametric Stereo coding tools defined in the MPEG-4 Audio standard ( and it refers to ISO / IEC 14496-3: 2001 / Amd. 1: 2003-Bandwidth Extension, ISO / IEC 14496-3: 2001 / Amd. 2: 2004-Parametric Coding for High Quality Audio, ISO / IEC 14496-3: 2001 and ISO / IEC 14496-3: 2001 / Amd. 1: 2003 / DCOR1 ).

Prior to the standardization of HE AAC v2 by MPEG, Coding Technologies submitted the combination of HE-AAC v1 coupled with Parametric Stereo under the name Enhanced AAC +.

During the 1960s the use of manual sign language grew greatly, but it was not until the 1980s that AAC began to emerge as an area in its own right.

The 1940 AAC 815 was the first racing car to be designed by Enzo Ferrari, although it was not badged as a Ferrari model.

Prince Harry was presented with his flying brevet ( wings ) by his father, on 7 May 2010, at a ceremony at the Army Air Corps Base ( AAC ), Middle Wallop.

The sector was immediately monopolized by the Anglo American Corporation ( AAC, North-American ) and the Rhodesian Selection Trust ( RST, South African ), who would control the sector till independence.

Transcoding from AAC to Dolby Digital or DTS and multi-channel output via HDMI was not originally necessary for Freeview HD certification.

In 1831, the first sheep stations and cattle stations were formed, and in the same year the Australian Agricultural Company ( AAC ) was granted a lease of 127, 000 hectares of land at Goonoo Goonoo, south of the present location of Tamworth, extending to present-day Calala.

From 2004 until 2009, The Watchtower was released on CD in MP3 format ; digital files are now available for download in MP3 and AAC / M4B formats.

The PASC compression scheme was believed to give better quality audio than the 5: 1 compression used by ATRAC in the original MiniDisc, but not as good as the uncompressed DAT, although both Philips and Sony stated the difference was imperceptible to listeners ' ears ( like MP3 or AAC files today ).

Only a few days after the release of iTunes 7. 0 the experimental version 2. 3 of QTFairUse6, a derivative of the python open source QTFairUse, was released which dumps each track to a raw AAC file which then can be converted to any format.

Alliance Atlantis Communications Inc. ( formerly traded as TSX: AAC ) was a Toronto-based media company that operated primarily as a specialty service operator in Canada.

In November 2000, Alliance Atlantis ( AAC ) was granted approval from the Canadian Radio-television and Telecommunications Commission ( CRTC ) to launch BBC Kids, described as " a national English-language Category 2 specialty television service devoted to top-quality educational and entertaining programming for children and youth ( ages 2-17 ).

The channel was launched on November 5, 2001 as a joint venture between AAC and BBC Worldwide.

The channel was launched on September 7, 2001 under its current name as a joint venture between AAC and BBC Worldwide.

The AAC was broken up in 1949, with the SAS returning to its independent status, while the Parachute Regiment and Glider Pilot Regiment came under the umbrella of the Glider Pilot and Parachute Corps.

A significant reason was the customer preference for easy-to-transport lossy compressed formats such as MP3 and AAC.

A technically better compression technique, MPEG4 ( more commonly known as AAC ) was subsequently developed and found favor with most commercial music distributors.

The first V-1710 engine purchased by the USAAC was AAC 33-42, Allison SN 2, the XV-1710-1, while SN ’ s 3, 4, 5 were V-1710-4 engines for USN airships, followed by a batch of 11 Air Corps engines purchased with FY-1934 funds ( 34-4 through 34-14 ) that covered Allison serials 6 through 16.

The second ascent was by an eight man American team in June 1982 ( Errington, Trafton AAC 1983 ) via the north ridge.

In May 2004, a series of double-blind listening tests ( as reported on Slashdot ) suggested that Musepack and Ogg Vorbis ( which was the 1. 1 " aoTuV " fork at the time ) were the two best available codecs for high-quality audio compression at bitrates around 128kbit / s, beating MP3, AAC, WMA, and ATRAC.

It was supported by PLAC, Fianna Fáil, some members of Fine Gael, the Roman Catholic hierarchy, and some Protestant groups, and opposed by various groups under the umbrella name of the Anti-Amendment Campaign ( AAC ), including Labour senator ( and future President of Ireland ) Mary Robinson, and feminist campaigners.

It was replaced by the AAC Ferrying Command Specialized Four Engine school.