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Entries found for search: IDE

Accidental : In a musical scale, the accidentals are the extra sharp and flat notes that are not part of the diatonic series. For example, in the key of C on the piano, the accidentals are the black keys.

coincident pair : Also known as an X-Y or XY pair, this is a microphone configuration which commonly uses two cardioid or figure-eight microphones mounted at right angles to one another, the latter preferred only for special applications. This is called a coincident pair because the two microphones are mounted as closely as possible to each other so that the sound being captured arrives at both microphones at exactly the same time, regardless of the direction of the source. All coincident configurations have to use directional microphones in order to create the necessary level differences between the two channels of the stereo system; omnidirectional microphones do not produce level differences proportional to the angle of incident sound. This technique is favored by many broadcast applications because of good mono compatibility. Recording with a coincident pair is called XY recording in the US and the UK, AB recording throughout Europe, and also crossed pairs, or normal stereo. In the US, "AB recording" means a spaced pair. See also Blumlein pair, near-coincident pair. Contrast with spaced pair.


fidelity : The accuracy with which a music reproduction system will recreate the sound of the original music.v field

glide : A function, also called portamento, in which the pitch pitch moves continuously from one note to the next, such as is possible on a violin or trombone, instead of jumping over the intervening pitches, such as is necessary on a keyboard instrument or woodwind.

guide vocal : In multitrack recording, a preparatory vocal track to serve as a template for the later recording of instrumental tracks, eventually replaced by a final version.

high-fidelity : Refers to the reproduction of sound with little or no distortion. At least 15kHz of audio bandwidth is required for stereo high-fidelity.

hi-fi video sound : The result of encoding the stereo soundtracks input to hi-fi type VHS or Beta format videotape recorders on an frequency modulated carrier wave. This information is recorded along with picture data via the video record heads. Reproduction of hi-fi sound approaches digital quality audio.

IDE : Integrated Disk Electronics. A standard interface bus in PCs, most commonly used for hard disks. EIDE is Enhanced IDE, somewhat faster than the original IDE specification. This later evolved into ATA (Advanced Technology (AT) Attachment) and UltraATA. This evolution is fairly parallel to the SCSI bus technology used by Macs.

incident sound : The first (audio) source event to reach the sensor. Also called the incident wave, direct wave, primary wave, first arrival. See also reverberation.

live side : The side of a microphone which is most sensitive to sound. See acceptance angle.

side chain : A circuit which measures how strong the input signal is which is being modulated by a compressor. This information is then used to control the gain of the circuit output. The compressor will behave differently, depending on whether the side chain responds to average signal levels or to absolute signal peaks. In the example below, for Dolby B-type companding, the side chain feeds any signals above 3kHz to the compressor:

side-addressed : See end-addressed

sidebands : (1) Frequency components outside the natural harmonic series, generally introduced to the tone by using an audio-range wave for modulation. See AM,FM. (2) Elements of a high-frequency carrier signal created when the data/voice signal is modulated with the carrier signal, as in FM synthesis. The new sets of partials generated by the modulated carrier give the tones the timbre other than that of the original sine wave.

Side : (1) Any master tape of one song, whether recorded for inclusion in an album, or as the A- or B-SB side of a single. Always capitalized, Side is used in recording contracts, so precise definition is important. (2) In the AFTRA Code of Fair Practice, a Side is a master tape of no more than 3 1/2 minutes. If the total length of the song is longer than that, AFTRA singers receive additional payment.

near-coincident pair A spaced-pair microphone technique which uses directional microphones, placed approximately 7" apart, or the average spacing between ears on a human head. This allows for some amount of phase difference in the two signals, but not enough to lose mono compatibility, combining the level difference recording characteristics of directional coincident-pair microphones in a spaced array. ORTF is the most common near-coincident arrangement, but others include NOS, and the Faulkner array.

vestigial sideband : In AM, whereby a portion of one sideband is suppressed.

Video-8 : A consumer video recording format which uses 8mm tape in a small cassette. It was developed for use in hand-held cameras and other portable equipment, but has also been adopted for use in some digital audio systems, such as A-DAM.

video black : A video signal composed of all black, containing horizontal sync, vertical sync, and color burst information. Video black is used to pre-stripe video tape as the master clock (35.8MHz for NTSC) for sound synchronization. SMPTE timecode may be derived from the color burst data. Also called black-burst color signal, but video black is actually black in color.

video sync : A subset of video black which does not necessarily contain color burst signal. It uses horizontal sync or vertical sync to provide aA very stable video reference source generated by an extremely accurate clock. The signal is used to control the speed of the video machines, digital audio machines, and is used as a timing reference to ensure accurate synchronization. See master clock, word clock.

wide-range curve : See X-Curve.

wide-range monitoring : See X-Curve.

data slider : A pot fitted to a device such as a synthesizer which allows parameters within the device to be adjusted for programming, etc."

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