Commercial aircraft cockpit data recorders, commonly known as a “ black box ”, store flight information and audio from the cockpit.

An audio file format is a file format for storing digital audio data on a computer system.

It can be a raw bitstream, but it is usually a container format or an audio data format with defined storage layer.

A codec performs the encoding and decoding of the raw audio data while the data itself is stored in a file with a specific audio file format.

Although most audio file formats support only one type of audio data ( created with an audio coder ), a multimedia container format ( as Matroska or AVI ) may support multiple types of audio and video data.

Stand-alone, file based, multi-track recorders from Sound Devices, This of course results in a reduction in audio quality, but a variety of techniques are used, mainly by exploiting psychoacoustics, to remove the data that has least effect on perceived quality.

* iklax – An iKlax Media proprietary format, the iKlax format is a multi-track digital audio format allowing various actions on musical data, for instance on mixing and volumes arrangements.

The. ra format allows files to be stored in a self-contained fashion on a computer, with all of the audio data contained inside the file itself.

The. ram file contains no audio data itself.

* raw – a raw file can contain audio in any format but is usually used with PCM audio data.

Level compression is not to be confused with audio data compression, where the amount of data is reduced without affecting the amplitude of the sound it represents.

Reduction of jitter ( and also end-to-end round-trip delays ) is particularly important when carrying voice traffic, because the conversion of digitized voice into an analogue audio signal is an inherently real-time process, and to do a good job, the decoder ( codec ) that does this needs an evenly spaced ( in time ) stream of data items.

The Electron was able to save and load programs onto audio cassette via a supplied converter cable that connected it to any standard tape recorder that had the correct sockets.

BWF ( Broadcast Wave Format ) is a standard audio format created by the European Broadcasting Union as a successor to WAV.

* AIFF – standard audio file format used by Apple.

* Au – the standard audio file format used by Sun, Unix and Java.

* wav – standard audio file container format used mainly in Windows PCs.

* Red Book ( audio CD standard )

* Red Book ( CD standard ), the original means of playing back audio on the medium

In September 1978, the company demonstrated an optical digital audio disc with a 150 minute playing time, 44, 056 Hz sampling rate, 16-bit linear resolution, and cross-interleaved error correction code — specifications similar to those later settled upon for the standard Compact Disc format in 1980.

By the early 2000s, the CD largely replaced the audio cassette player as standard equipment in new automobiles, with 2010 being the final model year for any car in the US to have a factory-equipped cassette player.

For example, raw uncompressed PCM audio ( 44. 1 kHz, 16 bit stereo, as represented on an audio CD or in a. wav or. aiff file ) has long been a standard across multiple platforms, but its transmission over networks is slow and expensive compared with more modern compressed formats, such as MP3.

And in the early days of microcomputers, paper tape or audio cassette tape ( see Kansas City standard ) or nothing were used instead.

Briefly, the specification calls for picture encoding using the ISO / IEC 15444-1 " JPEG2000 " (. jp2 ) standard and use of the CIE XYZ color space at 12 bits per component encoded with a 2. 6 gamma applied at projection, and audio using the " Broadcast Wave " (. wav ) format at 24 bits and 48 kHz or 96 kHz sampling, controlled by an XML-format Composition Playlist, into an MXF-compliant file at a maximum data rate of 250 Mbit / s.

This standard was well intentioned but only mildly successful ; in practice, the term was widely misapplied to audio products that did not remotely approach the DIN basis specifications.

* Kansas City standard, a digital data storage standard for audio cassettes

This signal can be distributed by standard audio wiring, connectors, distribution amplifiers, and patchbays, and can be ground-isolated with audio transformers.

The first MPEG compression standard for audio and video.

MPEG-1 is a standard for lossy compression of video and audio.

Perhaps the best-known part of the MPEG-1 standard is the MP3 audio format it introduced.

The MPEG-1 standard is published as ISO / IEC 11172 – Information technology — Coding of moving pictures and associated audio for digital storage media at up to about 1. 5 Mbit / s.

MPEG-2 is a standard for " the generic coding of moving pictures and associated audio information ".

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.

* Uncompressed audio formats, such as WAV, AIFF, AU or raw header-less PCM ;

While data reduction ( compression, be it lossy or lossless ) is a main goal of transform coding, it also allows other goals: one may represent data more accurately for the original amount of space – for example, in principle, if one starts with an analog or high-resolution digital master, an MP3 file of a given size should provide a better representation than a raw uncompressed audio in WAV or AIFF file of the same size.

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

Apple Computer's AIFF is a big endian audio file format developed from IFF.

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

Standard AIFF is a leading format ( along with SDII and WAV ) used by professional-level audio and video applications, and unlike the better-known lossy MP3 format, it is non-compressed ( which aids rapid streaming of multiple audio files from disk to the application ), and lossless.

In addition to audio data, AIFF can include loop point data and the musical note of a sample, for use by hardware samplers and musical applications.

All traditional AIFF and AIFF-C files continue to work normally on Mac OS X ( including on the new Intel-based hardware ), and many third-party audio applications as well as hardware continue to use the standard AIFF big-endian byte order.

The iPod line can play several audio file formats including MP3, AAC / M4A, Protected AAC, AIFF, WAV, Audible audiobook, and Apple Lossless.

When re-ripping such a CD one could use a lossless audio codec such as AIFF, Apple Lossless, FLAC or WAV however such files take up significantly more space than the original. mp4 files.

; Container formats: 3GP, ASF, AVI, DVR-MS, FLV, Matroska, Musical Instrument Digital Interface (. mid /. midi ), QuickTime, MP4, Ogg, OGM, WAV, MPEG-2 ( ES, PS, TS, PVA, MP3 ), AIFF, Raw audio, Raw DV, MXF, VOB, RM.

Available for both 68k and PPC based Macs running System 7. 0. 1 or later, it supported the embedding of a number of multimedia formats into web pages, including AVI and QuickTime formatted video and AIFF and WAV formatted audio.

Due to the codec not being ported, it is incapable of playing Apple Lossless and AIFF audio files.

* On PCs, the term PCM and LPCM often refer to the format used in WAV ( defined in 1991 ) and AIFF audio container formats ( defined in 1988 ).

Internet Explorer supported the embedding of a number of multimedia formats into web pages, including AVI and QuickTime formatted video and AIFF, Midi and WAV formatted audio.

* Reading and writing AU, WAV, AIFF, MP3 ( via an external LAME MP3 encoder ), Ogg Vorbis, FLAC and other audio file formats

Many major film studios are now backing up their libraries by converting them to electronic media files, such as. AIFF or. WAV-based files via digital audio workstations.