SoundCraft Spirit Monitor - Manual (Page 24)

(sub) group an output into which a group of signals can be mixed.
headroom the available signal range above the nominal level before
clipping occurs.
highpass filter a filter that rejects low frequencies.
line level signals at a nominal level of -10 to +6dBu, usually coming from a low
impedance source.
peaking an equaliser response curve affecting only a band of frequencies
i.e. based on a bandpass response.
PFL (pre-fade listen) a function that allows the operator to monitor the pre-fade
signal in a channel independently of the main mix.
rolloff a fall in gain at the extremes of the frequency response.
shelving an equaliser response affecting all frequencies above or
below the break frequency i.e. a highpass or lowpass derived
response.
spill acoustic interference from other sources.
talkback the operator speaking to the artistes or to tape via the
auxiliary or group outputs.
transient a momentary rise in the signal level.
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