Calista C3-S Security System Harmonic Distortion

The presence of harmonics in the output signal of a device which were not present in the input signal.

Hard Disk Recording
The recording of digital audio onto a hard disc.

Calista C1-9 Home Theater Effects
Electronic boxes (usually rack mounted) added to a PA system to subtly change and enhance the signals going through it. Examples include; Reverb, Delay, Compressor, Chorus.

Frequency
Practically speaking, high frequency means high pitch and low frequency means low pitch.

Calista C2-88 Projector Assistant Engineer
A less elevated version of the term Second Engineer. Experienced seconds often place microphones, operate tape machines, break down equipment at the session end and keep the paperwork for the session.

Foot Switch
A switch placed on the floor and pressed by a musician to do various functions.

Echo Return
An input of the console, which brings back the echo (reverberation) signal from the echo chamber or other echo effects device. Calista Reviews

Digital Recording
1) ADAM : (Akai Digital Audio Multitrack). 12 track recording onto Video 8 tape. 16 bit, 44.1 or 48 kHz sampling rate.
2) DAT (Digital Audio Tape) Cassette-like system which has much higher quality than standard audio cassettes. Widely used in gathering sound effects, for news gathering, and for playback of music.
3) DCC (Digital Compact Cassette) Rival to DAT which also plays standard audio cassettes.
4) MiniDisc : Uses computer disk technology, rather than tape. A laser heats an area of magnetic disk which is then written to by a magnetic head. When cooled, the magnetic information is read from the disk by laser. Tracks can be named, and are instant start. Very theatre-friendly system.
5) Direct to Disk : Uses the hard disk present in most PCs as the recording medium.

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