AET 2560 Midterm Review with Complete Solutions 2024/2025 Common mode rejection - Correct Answer balanced cable --> what's common is rejected Common mode signals (signals appearing in phase in a differential circuit) are canceled at the input of the destination gear when the differential signal is combined; RFI (Radio Frequency Interference) or EMI (Electro-Magnetic Interference) picked up by the cable are common signals cancelled.squelch - Correct Answer disadvantages = male drops out advantages = An electric circuit that cuts off a radio receiver when the signal is too weak for reception of anything but noise natural sound - Correct Answer unprocessed sound coming directly from an instrument or human vocal chords or Unreinforced sound live sound - Correct Answer natural sound that is captured and reproduced into an electrical signal/amplified reinforced sound - Correct Answer live sound that is amplified, enhanced, and distributed over a large area PA system (public address) - define - Correct Answer an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public portable PA - Correct Answer systems that can be taken to different locations, Small, for small events long setup / teardown fixed installation PA - Correct Answer pros = permanent, consistent, ready, quick set up 1 / 2
cons = inflexible, costly Permanent P.A., range from small to large scale.types of portable PA systems - Correct Answer band PA, touring / stadium sound PA system uses: - Correct Answer public announcement: distributed / zoned system
direct public address: complex messages
performance: relaying art
gain before feedback - Correct Answer a measure of how much a microphone can be amplified in a sound reinforcement system before causing audio feedback signal to noise - Correct Answer a measure that compares the level of a desired signal to the level of background noise system headroom - Correct Answer the amount by which the signal-handling capabilities of an audio system exceed a designated level built into the console, this is the extra little space for when you exceed the standard operating level→ helps to avoid distortion...In the digital medium, headroom has an absolute limit with very harsh sounding results when exceeded.overdriven sound - Correct Answer compresses the peaks of an electric musical instrument's sound wave and adds overtones harmonic distortions - Correct Answer adds overtones that are whole number multiples of a sound wave's frequencies
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