AET 2560 Final Test Questions with Correct Answers
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Course
AET 2560
Institution
AET 2560
AET 2560 Final Test
Questions with
Correct Answers
What frequency bands are illegal to operate in? - Answer-700 MHz
What are the operational frequencies of VHF systems? - Answer-30-300 MHz
What are the operational frequencies of UHF systems? - Answer-300 MHz - 3 GHz
When using multiple wire...
AET 2560 Final Test Questions with Correct Answers What frequency bands are illegal to operate in? - Answer -700 MHz What are the operational frequencies of VHF systems? - Answer -30-300 MHz What are the operational frequencies of UHF systems? - Answer -300 MHz - 3 GHz When using multiple wireless microphones, how far apart should the frequency bands be? - Answer -Separat e frequency bands by 1 MHz minimum. What is squelch? - Answer -Like a gate, turns on and off the signal when audio is not present Looks at radio frequency. Meters receiver when no signal is present. What is the difference between limiting and compressin g? Where is it appropriate to use each? - Answer - What is the side -chain input on a compressor? What are some examples of how it's used? - Answer -Allows for external processing to influence detection circuit. Can be used on a microphone input for duckin g. Compression control on music or a kick drum. Filters/EQ - De-essing. What is the difference between a gate and a downward expander? Where is it appropriate to use each? - Answer -A noise gate turns volume down below specified level; like on/off switch; can be used to reduce rumble bleed; tightening drums and adding punch; and eliminating noise. A downward expander decreases gain below threshold; like an auto -fader; less likely to cause feedback; can allow you to turn the level louder. What is the adv antage of using a stereo input channel over a reverb return? - Answer -A stereo input is pre -fader because it's an insert, a reverb return is like a bus send and is post fader Personal PA - Answer -Smallest, can usually fit in your car; low -level of knowled ge Fixed Installation - Answer -Venues, with regular sound needs. I.E. bars, churches, concert halls. Band PA - Answer -Small to large venues; 10 -2000 people. Touring/Arena PA - Answer -Requires small army of people and trucks; extreme PA system. Portable PA - Answer -Taken from one location to another; no flexibility in venue flexibility; rough on equipment; takes more knowledge to operate. headroom - Answer -margin of dB that you leave between your average signal level and the maximum signal level the system can handle. crest factor - Answer -the most sound your system will encounter (ratio of peaks/average sound) harmonic distortion - Answer -two different freq uencies in the sound system or reproduced by the system and create a harmonically related frequency; sounds okay. gain to feedback - Answer -one mic at given maximum available gain before audible feedback two "open" mics: 3dB less gain before audible feedb ack four "open" mics: 6dB less gain before audible feedback. eight "open" mics: 9dB less gain before audible feedback. NL2 - Answer -Has 2 cables and 1 signal NL4 - Answer -Has 4 cables and 2 signals. NL8 - Answer -Has 8 cables and 4 signals. What is a ba lanced cable? - Answer -Utilize common mode rejection; lets us eliminate RFI/EMI; low impedance (>20ft); twisted pair configuration; 1 hot, 1 cold, 1 shield/ground.
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