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Idler wheel
Also known as a 'Pinch roller', in a tape recorder transport, the rubber wheel that traps the tape between itself and the capstan, so that the capstan can move the tape forward.
IMA
An acronym for International MIDI Association. A member-supported MIDI information network.
Image
The illusory sound field located between two stereo speakers.
Impedance
The complex sum of resistance and reactance. The opposition or resistance of a circuit to the flow of alternating current.
Input
The connection going into an audio device or computer. In a mixing board, a connector for a microphone or other signal source.
Input module
In a mixing board, the group of controls affecting a single input signal, possibly including a fader, equalizer, trim, effect sends, cue send, solo, and bus assignment controls.
Input section
Refers to all of the input modules of a mixing board.
I/O
An abbreviation for Input/Output for data flow.
ISO
An acronym for International Standards Organization. An international organization that controls data communications standards, as well as a number of other standards.
Jack
A receptacle-type connector for audio signals into which a plug or other input is inserted. The plug is the 'male' connector and the jack is the 'female' connector.
Jam sync
The ability of a sync box to continue to read SMPTE time code even when the time code on the tape is corrupted.
Keyboard controller
A keyboard instrument that transmits MIDI data, but has no onboard sounds.
Keyboard workstation
A keyboard that typically includes an internal sequencer, effects processor, and multitimbral sound module.
Kilo
A unit of measurement prefix meaning one thousand, and commonly abbreviated 'k'. A kilogram is a weight of one thousand grams and 1 kilohertz (1 kHz) is a frequency of one thousand hertz.
Additional Columns by Dan McAvinchey
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- And 3 more in the The Essentials series, view the index
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Vol. 17, No. 2: Feb.-Mar. 2012
