digital audio

(redirected from Audio samples)
Also found in: Dictionary, Thesaurus, Medical, Financial.

digital audio

(multimedia, file format)
A sequence of discrete samples taken from a continuous sound (audio) waveform. Tens of thousands of samples are taken each second. Each sample represents the intensity of the sound pressure wave at that instant. Apart from the sampling frequency, the other parameter is the digital encoding of each sample including the number of bits used. The encoding may be linear, logarithmic or mu-law.

Digital audio is typically created by taking 16-bit samples over a spectrum of 44.1 thousand cycles per second (kHz), this means that CD quality sound requires 1.4 million bits of data per second. Digital telephone systems use lower sample rates.

Filename extension: .au (Unix), .snd (MS-DOS, MS Windows).

See also Audio IFF, MP3, wav.

Usenet newsgroups: alt.binaries.sounds.*.

A FAQ on audio file formats is available. Part 1, Part 2.
This article is provided by FOLDOC - Free Online Dictionary of Computing (

digital audio

(1) Sound waves that have been sampled, digitized and stored in the computer. Common formats are music CDs, MP3, WAV and AIFF, and software-based players play the largest variety of audio formats (see media player).

Musical Instrument Digital Interface (MIDI)
Although digital, the MIDI format differs from all other digital audio formats. MIDI files contain a coded version of the musical score, not the actual sound (see MIDI). Contrast with analog audio. See CD-DA, MP3, codec examples and S/PDIF.

(2) Broadcast radio in digital format. See HD Radio, DAB and satellite radio.

(3) See digital CD audio.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
In this paper, the variable low bit coding is improved by combining the embedding interval, which means that not every audio sample data is used for embedding the secret information.
At the same time, for an audio signal with sampling rate [F.sub.s], the number of audio samples generated simultaneously within the duration of one frame = [F.sub.s]/ [F.sub.p], and to avoid losing of audio samples it is required that: [F.sub.s]/[F.sub.v] [less than or equal to] WH and if there is text with length string to be included in this message, then:
The audio samples were robust to various types of attacks, including add_brumm, add_noise, compressor, dyn_noise, exchange, extra_stereo, and low pass filtering.
With a scaling ratio of 256, each descriptor represents around 77 seconds of audio samples. Therefore, unless the query input also starts at a point very close to the segment boundary of a soundtrack, a comparison based on these descriptors may fail.
"The audio samples were recorded on a Les Paul guitar, and we chose notes that made it easy to play something good," Hom said.
It also has a compact speaker/amplifier known as the Tubby Amp and a Pop Audio Glitching Tool used to chop audio samples into "glitched-up" beats and tones.
Scanned photographs and audio samples were included, as parts of Conover's collection, which was donated to the University of North Texas in 1997.
Besides being "probably the hardest thing I've ever done in my life," she says that the album is "dangerously close to being politically controversial." Many tracks draw ideas (as well as audio samples) from the film "Zeitgeist: Addendum" which, in the words of director Peter Joseph, identifies "the true source of the instability in our society." and feature audio samples that are free online.
Malkiel goes well beyond audio samples, however, and turns water into an integral part of the ensemble.