AET 2560 - Sound Reinforcement Final Exam 2023 Guide with complete solution

AET 2560 - Sound Reinforcement Final Exam 2023 Guide with complete solution illegal frequency bands 100 - 799 mHz squelch a circuit for preventing a radio receiver from producing audio-frequency output in the absence of a signal having predetermined characteristics diversity receiving two antennas switching systems to pick up strongest signal from antenna difference between limiting and compressing compressor: a signal processor that for a given input amplitude range produces a smaller output range limiter: a signal processor in which some characteristic of the output is automatically prevented from exceeding a predetermined value side-chain input on a compressor input to the gain reduction stage of circuit allows external audio source to control gain reduction gate attenuates signals that register below the threshold; the gate opens when signals pass the threshold downward expander when the signal level drops below the threshold, the signal gain is decreased notch filter a band-stop filter with a narrow stop band (high Q factor) advantage of using stereo input channel over a reverb return ... parametric EQ provides both sweepable center frequencies and adjustable Q, as well as boost / cut controls semi-parametric EQ provides control of the amplitude and frequency, but uses a pre-set bandwidth of the center frequency non-parametric EQ ... graphic EQ multi-frequency, band reject filter, or a band-pass / reject filter LPF low-pass filter; passes low-frequency signals and attenuates signals with frequencies higher than the cutoff frequency BPF band-pass filter; passes frequencies within a certain range and attenuates frequencies outside that range