1) The process of adjusting the tonal quality of a sound. A graphic equalizer provides adjustment for a wide range of frequency bands, and is normally inserted in the signal path after the mixing desk, before the amplifier. See Feedback.
2) Any time the amplitude of audio signals at specific set of frequencies are increased or decreased more than the signals at other audio frequencies.
Capacitor
1) A device consisting of two or more conducting plates separated from one another by an insulating material and used for storing an electrical charge. Sometimes called a condenser.
2) An electronic device that is composed of two plates separated by an insulator.
Brooks HI FI projectors Chord
Three or more musical pitches sung or played together.
Expander
A device that causes expansion of the audio signal.
Brooks Hi Fi speakers Line Out (Output, Send)
Where a signal leaves the board or component.
Compression Ratio
How many dB the input signal has to rise above the threshold for every one dB more output of a compressor or limiter.
Equalizer (Parametric, Graphic)
This is used to filter out and adjust specific frequencies in the PA. This is the part of the PA where you have the most control over the band's overall sound. It is also the number one weapon against feedback.
Key
The control of a dynamics processing device by an external audio signal.
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