Calista C3-S Security System Amplitude

The extreme range of a signal. Usually measured from the average to the extreme.

Far Field
The area from 3 feet away from the sound source up to the critical distance.

Calista C1-9 Home Theater Condenser
An older term meaning the same thing as Capacitor (an electronic device which is composed of two plates separated by an insulator and can store charge) but sill in common use when referring to a microphone's active element.

House Sync
A synchronization signal such as SMPTE time code that is used by all recorders in the control room.

Calista C2-88 Projector Keyboard
1) Any musical instrument controlled by pressing a key.
2) The part of the computer that has the keys.

Attack
The rate the sound begins and increases in volume.

Bass Roll Off
An electrical network built into some microphones to reduce the amount of output at bass frequencies when close-micing. Bose

High Impedance Mic
A microphone designed to be fed into an amplifier with input impedance greater than 20 k ohms.

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