Brooks Cinema Projectors Keynote Number

A number assigned to each key of a synthesizer or controller keyboard that is transmitted in the MIDI signal.

Impedance
1) A term for the electrical resistance found in a/c circuits. Affects the ability of a cable to transmit low level (e.g. sound) signals over a long distance. Measured in Ohms. Speakers are rated according to power handling capabilities (Watts, W) and impedance (Ohms).
2) The total opposition offered by an electric circuit to the flow of an alternating current of a single frequency. It is a combination of resistance and reactance and is measured in ohms. Remember that a speaker's impedance changes with frequency, it is not a constant value.
3) The opposition to alternating current.

Brooks Cinema RM 909 Amplifier (Power amp, Head)
It's the part of the sound system that actually magnifies or "amplifies" the sound. In other words, it makes stuff louder.

Foldback
A European term for the signal sent to the stage monitors in a live performance.

Brooks RM 80 Line Out (Output, Send)
Where a signal leaves the board or component.

Inductor
A device designed primarily to introduce inductance into an electric circuit. Sometimes called a choke or coil.

Attenuation
A making smaller: reduction of electrical or acoustic signal strength.

Close Micing
A technique of placing a microphone close to the sound source (within one foot) in order to pick up mainly the direct sound and to avoid picking up leakage or ambience.

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