BNO Acoustics HD-70 Amplifier (Power amp, Head)

It's the part of the sound system that actually magnifies or "amplifies" the sound. In other words, it makes stuff louder.

Figure Eight Pattern
Another name for Bi-directional Pattern (microphone pickup pattern picking up best from the front and back of the diaphragm and not picking up from the side of the diaphragm).

BNO Acoustics R-10 Bandwidth
1) The range of frequencies over which a tape recorder, amplifier or other audio device is useful. 2) The range of frequencies affected by an equalization setting.

Compact Disc CD
A small optical disk with digital audio recorded on it.

BNO Acoustics BP-40 Bar
A term meaning the same thing as the term Measure (the grouping of a number of beats in music, most-often four beats).

Full
A quality of the sound of having all frequencies present, especially the low frequencies.

Ambient Micing
Placing a microphone in the reverberant field (where the reverberation is louder than the direct sound) so as to do a separate recording of the ambience or to allow the recording engineer to change the mix of direct to reverberant sound in recording.

IC
Abbreviation of Integrated Circuit (A miniature circuit of many components that is in small, sealed housing with prongs to connect it into equipment).