* apl, file extension of the Monkey's Audio metadata file

tl: Audio file format

When the music is stored in an audio file format that is lossless such as FLAC, Monkey's Audio or WMA Lossless, the computer playback of recorded audio can serve as an audiophile-quality source for a hi-fi system.

* 1959-08-02 Joseph Cotten-Red Cloud Mesa ( Audio file, 20 mins )

Waveform Audio File Format ( WAVE, or more commonly known as WAV due to its filename extension ), ( also, but rarely, named, Audio for Windows ) is a Microsoft and IBM audio file format standard for storing an audio bitstream on PCs.

To record WAV files to an Audio CD the file headers must be stripped and the remaining PCM data written directly to the disc as individual tracks with zero-padding added to match the CD's sector size.

The default file formats are Windows Media Video ( WMV ), Windows Media Audio ( WMA ), and Advanced Systems Format ( ASF ), and its own XML based playlist format called Windows Playlist ( WPL ).

Audio data compression techniques, such as MP3, Advanced Audio Coding, Ogg Vorbis, or FLAC, are commonly employed to reduce the file size.

DIF blocks are the basic units of DV streams and can be stored as computer files in raw form or wrapped in such file formats as Audio Video Interleave ( AVI ), QuickTime ( QT ) and Material Exchange Format ( MXF ).

DV Audio / Video data can be stored as raw DV data stream file ( data is written to a file as the data is received over FireWire, file extensions are. dv and. dif ) or the DV data can be packed into container files ( ex: Microsoft AVI, Apple MOV ).

The. ram ( Real Audio Metadata ) and. smil ( Synchronized Multimedia Integration Language ) file formats are sometimes encountered as links from web pages ( see Streaming Audio section below ).

Instead, they link to a. ram ( Real Audio Metadata ) or SMIL file.

Audio Interchange File Format ( AIFF ) is an audio file format standard used for storing sound data for personal computers and other electronic audio devices.

Audio file of an angry exchange at a protest.

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.

Audiophiles play music from a wide variety of sources including phonograph records, compact discs ( CDs ), and digital audio file formats that are uncompressed as well as ones that are compressed using lossless data compression such as FLAC, Windows Media Audio 9 Lossless and Apple Lossless ( ALAC ).

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.

Monkey's Audio is a lossless file format for audio data compression.

* aac – the Advanced Audio Coding format is based on the MPEG2 and MPEG4 standards.

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

* wma – the popular Windows Media Audio format owned by Microsoft.

* Super Audio CD, a format which competes with DVD-Audio

* Digital Data Storage, a format for storing computer data on Digital Audio Tape cartridges

It includes the popular MPEG-1 Audio Layer III ( MP3 ) audio compression format.

* The RTP profile for Audio and video conferences with minimal control ( RFC 3551 ) defines a set of static payload type assignments, and a mechanism for mapping between a payload format, and a payload type identifier ( in header ) using Session Description Protocol ( SDP ).

* Spatial Audio Coding ( MPEG Surround ), a lossy compression format for surround sound

* Audio reading of the Constitution in MP3 format provided by the University of Chicago Law School

The WAV format supports compressed audio, using, on Windows, the Audio Compression Manager.

Audio CDs do not use WAV as their sound format, using instead Red Book audio.

Audio Video Interleaved ( also Audio Video Interleave ), known by its initials AVI, is a multimedia container format introduced by Microsoft in November 1992 as part of its Video for Windows technology.

In addition to being a media player, Windows Media Player includes the ability to rip music from and copy music to compact discs, burn recordable discs in Audio CD format or as data discs with playlists such as an MP3 CD, synchronize content with a digital audio player ( MP3 player ) or other mobile devices, and enable users to purchase or rent music from a number of online music stores.

Sony had originally intended for Digital Audio Tape ( DAT ) to be the dominant home digital audio recording format, replacing the analog cassette.

" Audio ( listen / download format ) of a formal debate between Christian Greg Bahnsen and skeptic Gordon Stein from the University of California, Irvine.

* Red Book ( audio CD standard ), Compact Disc Audio, the standard format for a CD

* Audio of Broadcast of " The Green Hills of Earth " from the NBC Radio Program X Minus One in mp3 format.

* Audio of Broadcast July 21, 1957 of " The Green Hills of Earth " from the CBS Radio Workshop in MP3 format at Internet Archive.

Other examples include dbx, Inc .' s Model 700 system, which, similar to modern Super Audio CDs, used a high sample-rate delta-sigma modulation rather than PCM ; Decca's 1970s PCM system, which used a videotape recorder manufactured by IVC for a transport ; and Mitsubishi's X-80 digital recorder, a 6. 4 mm ( ¼ in ) open reel digital mastering format that used a very unusual sampling rate of 50. 4 kHz.

* WikiRecording's Guide to Audio File Formats for Recording

Audio processing was necessary for early radio broadcasting, as there were many problems with studio to transmitter links.

Audio broadcasting ( be it for television or audio broadcasting ) is perhaps the biggest market segment ( and user area ) for audio processing products — globally.

* Audio description, a narration track for blind and visually impaired viewers of media such as TV and film

Thirty years later, on March 6, 2009, Philips received an IEEE Milestone award with the following citation: " On 8 March 1979, N. V. Philips ' Gloeilampenfabrieken demonstrated for the international press a Compact Disc Audio Player.

Audio codecs for cell phones need to have very low latency between source encoding and playback.

The dye materials developed by Taiyo Yuden made it possible for CD-R discs to be compatible with Audio CD and CD-ROM discs.

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

The X initial has been carried forward in the naming of APIs designed for the Xbox such as XInput and the Cross-platform Audio Creation Tool ( XACT ), while the DirectX pattern has been continued for Windows APIs such as Direct2D and DirectWrite.

Boss Audio class-D mono car audio amplifier with a low pass filter for powering subwoofer s

A few services not essential for server environments are disabled by default for stability reasons, most noticeable are the " Windows Audio " and " Themes " services ; Users have to enable them manually to get sound or the " Luna " look as per Windows XP.

Audio was not neglected either, having recruited Nine Inch Nails frontman Trent Reznor to facilitate unique sound-effects and ambient music for the game.

In 2006, the Interactive Audio Lab at Northwestern University released a game called Karaoke Callout for the Nokia Series 60 phone.

Audio control surfaces often resemble mixing consoles in appearance, and enable a level of hands-on control for changing parameters such as sound levels and effects applied to individual tracks of a multitrack recording or live performance output.

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.

Proposed physical layer transports include Ethernet-based protocols such as Audio Video Bridging and Architecture for Control Networks.

These sampling rates are exactly half that of those originally defined for MPEG-1 Audio.

MPEG-2 part 3 also defined additional bit rates and sample rates for MPEG-1 Audio Layer I, II and III.

; Part 3: Audio – compression codec for perceptual coding of audio signals.