BNO Acoustics 6k-52: Inverse Square Law

Simply stated, the fact that in an un-obstructed area (like an open field) the sound pressure level will drop to half-pressure (-6 dB) every time the distance to the sound source is doubled.

Pitch to Voltage Converter
A Device that will convert the frequency changes of an audio signal into proportional control voltage changes.

Echo Send
The output of a console used to send a signal to an echo chamber or delay effects device.

BNO Acoustics BP-40: Keying Input (Key Input)
An input on a dynamics processing device to control the device by an external audio signal.

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

Mono
Shortened from Monophonic and meaning that there is only one sound source or the signal was derived from one sound source.

Ribbon Mic
Delicate mic not suitable for high sound pressure levels. Consists of a corrugated conductive foil strip suspended between opposing magnetic poles which is excited by pressure differences between the front and rear of the microphone and induces a current.