Brooks XM 204 Cut-off Rate (Slope)

The number of dB that a filter reduces the signal for each octave its frequency past the filter's cut-off frequency (outside of the pass band).

Channel
1) In multitrack tape machines, this term means the same thing as the term Track (one audio recording made on a portion of the width of a multitrack tape).
2) A single path that an audio signal travels or can travel through a device from an input to an output.

Brooks XB 33 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.

Frame
1) A division of one second in synchronization and recording coming from definition two.
2) The amount of time that one still picture is shown in film or video.

Brooks VT-50 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).

Delay
Outboard sound equipment that can momentarily stores a signal being sent to part of a P.A. system so that delayed reinforced sound reaches the audience at the same time as live sound from the stage.

Feedback Control
The control on a delay line or delay effects device that controls the amount of feedback.

Distortion
Usually undesirable result of overloading sound equipment. Reducing the levels can remedy the situation.