BNO Acoustics QS-4 Hall

A large building designed for concerts; also called a concert hall.

I/O
Short for "Input/Output' and referring to:
1) An in-line console module that contains controls for the input section, output section and monitor section.
2) A module in electronic gear containing input and output amplifiers for the device.
3) A digital port (connector) able to both receive digital data and output digital data.

BNO Acoustics Speakers kHz
An Abbreviation of kilo-Hertz.

Foot (Foot Drum)
Another name for Bass Drum (the largest drum in the Drum Kit which puts out bass frequencies and is played with a foot pedal).

BNO Acoustics BP-40 Frequency Response
How sensitive an electronic device (mic, amplifier, speaker, etc.) is to various frequencies; often communicated with a graph.

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.

Fletcher Munson Effect
A hearing limitation shown by Fletcher Munson Equal Loudness Contours (as music is lowered in volume, it is much more difficult to hear bass frequencies and somewhat harder to hear very high frequencies).

Amplitude
The strength of a vibrating wave; in sound, the loudness of the sound.