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Digital Audio Essentials by Bruce Fries, Marty Fries

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Glossary

A-Z

AAC

Advanced Audio Coding. A standard compressed audio format developed by MPEG. AAC is the format used for downloadable music sold by Apple’s iTunes Music Store.

AARC

Alliance of Artists and Recording Companies. An industry association for record labels and artists. The AARC was a plaintiff, along with the RIAA, in the 1998 lawsuit to prevent Diamond Multimedia from selling its Rio portable MP3 player.

A/D converter (ADC)

Analog-to-digital converter. Samples the voltage of an analog signal to convert it into a digital signal. A key component of all sound cards and digital recoding devices.

ADPCM

Adaptive Differential Pulse Code Modulation. A type of digital audio compression that takes up less space than the Pulse Code Modulation technique used with music CDs.

AIFF

Audio Interchange File Format. A common uncompressed audio format for the Macintosh.

analog audio

Audio represented by a signal that continuously varies and stored on analog media such as records and tapes.

ASCAP

American Society of Composers, Authors and Publishers. A performing rights organization that provides blanket licensing on behalf of music copyright holders.

ATAPI

A protocol used to communicate with non–hard drive IDE devices, such as CD-ROM drives.

ATRAC3

A lossy audio format developed by Sony, used on MiniDiscs and for downloads from Sony’s online music store.

AU

An audio format used on Sun and NeXT computers.

bandwidth

The transmission capacity of a network or other communications medium.

bit

A binary digit (either ...

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