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.

For the audio codec, usual DTMB set-top boxes will support MPEG-1 Audio Layer II ( MP2 ) for stereo audio tracks, and Dolby AC-3 for surround sound audio tracks.

Five channel audio was specified, but a decision among the Dolby AC-3, multi-channel MPEG-1 Audio Layer II ( MP2 ) audio, and MIT " AC " systems had not yet been made.

* Audio: Audio CD, MP3, WAV, WMA, Dolby Digital AC-3, AAC, Ogg Vorbis, FLAC, M4A, MP4, Playlists ( WPL, ASX, M3U, PLS, XSPF )

Blu-ray Disc, the PlayStation 3 and the Xbox game console can output an AC-3 signal at a full 640 kbit / s.

* AC-3 algorithm ( Arc Consistency Algorithm 3 ), one of a series of algorithms used for the solution of constraint satisfaction problems

The AC-3 algorithm ( short for Arc Consistency Algorithm # 3 ) is one of a series of algorithms used for the solution of constraint satisfaction problems ( or CSP's ).

Boss introduced COSM ( Composite Object Sound Modeling ), Roland's proprietary version of digital modeling technology, into their AC-3 Acoustic Simulator pedal in 2006.

Buses for local municipal routes depart from " AC-2 " ( autostation No. 2 – along Shevchenko street ) and " AC-3 " ( Zinkivska street ).

USS Jupiter ( AC-3 ) | Jupiter became the first United States aircraft carrier.

* The waveOut, DirectSound, and DirectShow APIs support non-PCM formats such as AC-3 or WMA over S / PDIF.

A charge-coupled device ( CCD ) scanner in the image projector picks up a scanned video image of this area, and a processor correlates the image area and extracts the digital data as an AC-3 bitstream.

AC-3 supports audio sample-rates up to 48 kHz.

E-AC-3 ( Dolby Digital Plus ) is an enhanced coding system based on the AC-3 codec.

It offers increased bitrates ( up to 6. 144 Mbit / s ), support for more audio channels ( up to 13. 1 ), and improved coding techniques ( only at low data rates ) to reduce compression artifacts, enabling lower data rates than those supported by AC-3 ( e. g. 5. 1-channel audio at 256 kbit / s ).

It is not backward compatible with existing AC-3 hardware, though E-AC-3 decoders generally are capable of transcoding to AC-3 for equipment connected via S / PDIF.

E-AC-3 decoders can also decode AC-3 bitstreams.

Only the discontinued HD DVD system directly supported E-AC-3, though Blu-ray Disc offers E-AC-3 as an option to graft added channels onto an otherwise 5. 1 AC-3 stream, as well as for delivery of secondary audio content ( e. g. director's commentary ) that is intended to be mixed with the primary audio soundtrack in the Blu-ray Disc player.

In this format, the AC-3 bitstream is interleaved with the video and control bitstreams.

The AC-3 standard allows a maximum coded bit rate of 640 kbit / s.

HD DVD limits AC-3 to 448 kbit / s.

ATSC and digital cable standards limit AC-3 to 448 kbit / s.

Some Sony PlayStation 2 console games are able to output AC-3 standard audio as well, mostly during pre-rendered cutscenes though.

* flac – File format for the Free Lossless Audio Codec, a lossless compression codec.

Newer ones include Free Lossless Audio Codec ( FLAC ), Apple's Apple Lossless, MPEG-4 ALS, Microsoft's Windows Media Audio 9 Lossless ( WMA Lossless ), Monkey's Audio, and TTA.

* APE Monkey's Audio Codec. ape files-support provided by the mac-port project plugin

* Codec: MPEG-1 Audio Layer II

* AC ' 97 ( Audio Codec 1997 ) interface between Integrated circuits on PC motherboards

FLAC (; Free Lossless Audio Codec ) is a codec ( compressor-decompressor or coder-decoder ) which allows digital audio to be losslessly compressed such that file size is reduced without any information being lost.

cs: Free Lossless Audio Codec

de: Free Lossless Audio Codec

es: Free Lossless Audio Codec

fr: Free Lossless Audio Codec

it: Free Lossless Audio Codec

hu: Free Lossless Audio Codec

pl: Free Lossless Audio Codec

sk: Free Lossless Audio Codec

sv: Free Lossless Audio Codec

yo: Free Lossless Audio Codec

* FLAC ( Free Lossless Audio Codec ), an audio data compression scheme

AC ' 97 ( Audio Codec ' 97 ; also MC ' 97 for Modem Codec ' 97 ) is an audio codec standard developed by Intel Architecture Labs in 1997.

fr: Audio Codec ' 97

ja: Audio Codec 97