SoundCraft 1605, 1603 manual Glossary, Post after the channel fader

GLOSSARY

Amplitude:	Another term used for signal level.
Attenuate:	Reduce the signal level.
Attenuator:	A device which reduces the signal level.
Auxiliary (Aux):	An independent mix derived from the channels for various functions. This can be set pre (before) or
	post (after) the channel fader.
Balanced, Unbalanced:	Refers to the type of input or output signal connection. An unbalanced connection has two signal
	carrying conductors, one of which is the cable shield. A balanced connection has three conductors,
	two for signal and a shield which is connected to earth. Because the signal conductors are at the
	same impedance and of opposite polarity they are better able to cancel and therefore reject
	interference and noise pickup. It is standard practice to use balanced connections for long cable runs,
	for example to amplifiers, or cables carrying sensitive or low level signals, for example microphones.
Bandpass (BPF):	A filter with a bell-shaped response for attenuation of frequencies either side of the centre frequency.
Beat Mixing:	Using the variable pitch controls on turntables/CD players to synchronise the rhythm track of two
	separate songs, so that the beat remains constant when smoothly cross-fading from one to the other.
Beats Per Minute (BPM): The measurement of the rhythmic beat or tempo of the music.
Booth:	The area, often enclosed, where the DJ operates. It is usually provided with local booth monitor
	loudspeakers.
Cutting:	Moving the cross-fade control sharply from one side to the other, to cut u or pick out a sound, a hi-
	hat, kick drum etc, or to drop straight into another record. Also known as chopping.
Cartridge:	The pickup in a turntable. Uses a stylus to pick up vibrations from the record (vinyl) and convert this
	to electrical signals that feed the console. The cartridge is usually fitted to a removable headshell that
	plugs into the turntable arm.
Clipping:	The harsh distorted sound that results when the signal hits the maximum level possible.
Contour (Law, Curve):	The term used to describe the ‘law’ of a fader, how quickly it responds as it is moved, or the amount
	of fade per unit of movement. The contour control associated with a fader lets the DJ tailor its
	response to suit the preferred mixing style.
Cross-fader:	A horizontally operated fader for fading one music track in while fading the other out. Often used by
	the DJ for cutting and layering sounds while mixing.
Cue (Solo):	A monitor system provided for the DJ to check individual channel signals using headphones while
	lining up tracks ready to introduce into the mix.
Daisy-Chaining:	Connecting the output of one mixer to an input of another mixer.
dB (Decibel):	The unit of measurement for audio signal level. This is logarithmic to follow the response of the
	human ear. ‘dB’ is a relative measurement to compare one level with another, for example gain from
	input to output. ‘dBu’ is an absolute measurement referenced to a voltage standard where 0dBu =
	0.775V rms. The console main outputs operate at 0dBu = ‘0’ reading on the meters. ‘’dBV’ is a similar
	measurement but refers to a 1V standard. It is common for consumer equipment to operate a the
	standard of –10dBV (316mV). ‘dBA’ refers to sound pressure level and is measured using the ‘A’
	scale that ‘hears’ in the same way as the human ear.
Dynamic Range:	The difference expressed in dB between the highest and lowest signal levels possible. This is limited
	by the clipping level and residual noise floor respectively.
Earth (Ground):	The term for the electronic signal reference. This generally connects to the mains supply earth point
	and all cable shields and conductive equipment cases. It provides the return for the signal voltage
	within the equipment. It also ensures operator safety by removing the possibility of electric shock
	should the mains voltage touch any metal part.

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