BNO Acoustics SQ-9 Beats Per Minute BPM

The number of steady even pulses in music occurring in one minute and there fore defining the tempo of the song.

Frequency Range
The range of frequencies over which an electronic device is useful or over which a sound source will put out substantial energy.

BNO Acoustics TR-12 Balls
1) The depth and thickness of a sound, usually on the bottom end of the EQ (as in "needs more balls"). 2) The strength of the voice on the mic (as in "check it like you have some balls").

Centre Frequency
The frequency of the audio signal that is boosted or attenuated most by an equalizer with a peak equalization curve.

BNO Acoustics XR-90 Decibel (dB)
1) Relative measurement for the volume (loudness) of sound. Also used to measure the difference between two voltages, or two currents. See Zero dB.
2) A numerical expression of the relative loudness of a sound. The difference in decibels between two
sounds is ten times the common logarithm of the ratio of their power levels.

Images
The squaring of the waveform that happens in the conversion of digital audio bits into analog signals.

Dolby
Trade name for a series of noise reduction systems that have become standard on many tape playback machines. Many film soundtracks are produced using this process. Different varieties are found from Dolby B on most personal cassette players, to Dolby SR and Digital, the current state of the art for cinema.

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