BNO Acoustics QS-4: Time Code

Short for SMPTE Time Code (a standardized timing and sync signal specified by the Society of Motion Picture and Television Engineers).

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

Magnetism
A natural attractive energy of iron based-materials for other iron-based materials.

Monitor Mixer
1) A console or other device that blends audio signals into composite signals and has a small number of outputs.
2) The section of the console which is used to do a rough mix so the engineer can hear what is being recorded without effecting the levels being fed to the multitrack recorder.
3) The audio technician who mixes the signals sent to the stage monitor speakers.

BNO Acoustics QT-5: Earth
The British version of the term Ground (In electronics, a place that has zero volts).

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.

BNO Acoustics Speakers: Cut-Off Frequency (Turnover Frequency)
1) The highest or lowest frequency in the pass band of a filter.
2) The highest or lowest frequency passed by an audio device (the cut-off frequency is usually considered to be the first frequency to be 3 dB lower than a reference frequency in the middle of the bandwidth of the device)