C-flat major

C-flat major is a major scale based on C-flat, consisting of the pitches C-flat, D-flat, E-flat, F-flat, G-flat, A-flat, B-flat and C-flat. Its key signature consists of seven flats. Its relative minor is A-flat minor, and its parallel minor is B minor, since C-flat minor is little more than a theoretical curiosity. Its enharmonic equivalent is B major, but neither key is often used as the main key for a composition. C-flat major is the home key of the harp, with all its pedals in the top position.

Cancellation

A shortening of the term Phase Cancellation (the energy of one waveform significantly decreasing the energy of another waveform because of phase relationships at or close to 180 degrees).

Cartesian coordinate system

1. A two-dimensional coordinate system in which the coordinates of a point in a plane are its distances from two perpendicular lines that intersect at an origin, the distance from each line being measured along a straight line parallel to the other. 2. A three-dimensional coordinate system in which the coordinates of a point in space are its distances from each of three perpendicular planes that intersect at an origin. After the Latin form of Descartes, the mathematician who invented it.

Catalog

A list of all files stored on a disk or in a bank. Sometimes called a directory.

Catalog

Older releases of recorded product that are not readily available in current retail display or rotation unless otherwise noted or advertised.

Cent

Unit of pitch equal to 1/100 of a semitone.

Center Detent

A notch in the center of a modulation wheel or lever which allows the performer to find the home position.

Certification

Any sound recording or music video recording that the RIAA has certified as having achieved a specified sales level in accordance with the Gold & Platinum program rules and procedures.

Channel messages

These are messages that are assigned to a specific MIDI channel within a system or device.

Channel, MIDI

An information pathway through which MIDI information is sent. MIDI provides for 16 available channels, each of which can address one MIDI instrument.

Channel, Output

The circuitry through which an instrument outputs individual notes.

Channel-voice messages

These are used to transmit real-time performance data throughout a connected MIDI system. They are generated whenever the controller of a MIDI instrument is played, selected, or varied by the performer.

chiasmus

The term for a reversal in the order of words in two otherwise parallel phrases. For example, the advice from the great sci-fi writer Ray Bradbury to aspiring writers: "You have to know how to accept rejection and reject acceptance," or the familiar adage: "Say what you mean and mean what you say."

Chorusing

1) A term meaning the same thing as Chorus (Definition 3 or 4). 2) In some delay effects devices, a term used to mean the term Depth (the amount of change in the controlled signal by the control signal).

Christie, Samuel Hunter

CISC (complex instruction set computing)

class-A

An amplifier class

Clean

A cd that's not marked or drilled and given free to stores as an incentive in order to get a better price and postioning on your disc.

Clef

At the beginning of each line of scored music is a clef sign. This denotes which notes, and specifically which pitches, are located on the various lines and spaces of the staff. The three most common clefs, or clef-signs, are the treble, bass and C clefs. The treble clef is most often found on the second line of the upper staff of a piano score. It locates g' or the G that is directly above middle C. The bass clef, or F clef, is most often located on the fourth line of the lower staff of a piano score. It locates f which is directly below middle C. Usually the bass and treble clefs do not move though the treble clef is also used as an octave-treble for those transposing instruments (and voices) that sound notes one octave above or one octave below the notes as written. The C clef or alto clef is used primarily for the viola. It locates middle C and is usually placed on the middle or fourth line of the staff.

Click sync/click track

this refers to the metronomic audio clicks that are generated by electronic devices to communicate tempo.

click track

this refers to the metronomic audio clicks that are generated by electronic devices to communicate tempo.

Clipboard

A temporary holding place in RAM for what you last cut or copied.

clock

A timing device that generates the basic periodic signal used as a source of synchronizing signals in digital equipment.

CLV (constant linear velocity)

A disc rotating at varying numbers of revolutions per second to maintain a constant relative velocity between pickup and track across the disc radius. The CD is a CLV system rotating from 500 rpm (lead-in track) to 200 rpm (lead-out track). Another example is the CLV laser disc which plays two sixty minute sides

coaxial cable

A single copper conductor, surrounded with a heavy layer of insulation, covered by a thick surrounding copper shield and jacket. A constant-impedance unbalanced transmission line.

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