Sound Reinforcement Poff Final Review (Quizzes) with complete solutions.

Sound Reinforcement Poff Final Review (Quizzes) with complete solutions. Which of the following items are not a primary requirement for a sound system? Intelligability, Fidelity, Power, Monitoring and Controllability, Portability - correct answers.Portability Which of the following attributes of a Permanently installed PA system are false? Equipment can be easily hidden through architectural structure and design, Minimal setup time is needed for each show, The system is inflexible, The system can easily be expanded. - correct answers.The system can be easily expanded Select the answer below that places the following items in order to complete a basic signal flow for a sound reinforcement system. - correct answers.Microphone, Mixer/Console, Effects Processors, Power Amplifier, Speaker The inverse square law states: "For every doubling of distance from a sound source, the intensity of a sound is reduced by four times it's strength." - correct answers.True In general when frequency ________, wave length ________. - correct up, decreases ______ is the term used to refer to the equipment or resources whose primary function is to provide audio coverage to the main audience area. - correct answers.Front of House (FOH) A line array is more commonly used in which type of PA system? - correct answers.Touring PA A good way to quickly assess the early reflective properties of a room is to excite the acoustics of the room by whistling. - correct answers.False Energy absorbed by acoustic panels is released as... - correct answers.Heat What effect does the audience have on the perception of sound in a space? people absorb high frequency energy, the type of clothing people wear will affect how much sound is absorbed, the sound in a room can change based on the audience members sitting or standing - correct answers.All of the Above What type of noise signal, that is equal energy per octave, is most commonly used to assess speaker performance? - correct answers.Pink Noise Phase is not only a description of where two waveforms are in their cycles but also where they are in time with each other. - correct answers.True It is easier to absorb low frequency sounds than it is to absorb high frequency sounds. - correct answers.False when the energy of a sound is propagated in many directions by an irregularly shaped object. - correct answers.Diffusion the change of direction of travel of sound waves caused by the interaction with an object - correct answers.Diffraction the striking of a sound against a large flat object that propagates the energy at an angle equal to the angle of incidence. - correct answers.Reflection When referring to reverberation, early reflections are sounds that arrive within the first 80ms of the direct sound and add to the perceived loudness of the sound. - correct answers.True A sound system is more likely to have reflection issues when... - correct answers.The room has a lot of hard materials in it such as wood or stone. A room that has too much absorption will sound dead, and a room with too little absorption can make it difficult to hear. - correct answers.True Which description below describes the Power Alley the best? - correct answers.The line between two speakers where both are in phase What is one of the easiest ways to reduce the effects of early reflections from side walls when placing loudspeakers in a room? - correct the speakers inward (a.k.a. Toe-In) Phantom Power is 48 volts of power supplied through the microphone cable on pins... - correct answers.2 & 3 An increase in the low frequency response of a microphone as a user moves very close to the diaphragm is the definition of... - correct answers.Proximity Effect The frequency range of a microphone describes the highest and lowest frequencies a microphone responds to while a frequency response graph show how sensitive the mic is at different frequencies. - correct answers.True In general, a low impedance microphone is less than... - correct answers.600 ohms The sensitivity of a microphone directly relates to its... - correct of the diaphragm Box 5 is located: - correct answers.Down Stage Box 9 is located: - correct answers.Stage Right Wing Box 7 is located: - correct answers.Thrust The location from which the speakers located on the stage for the musicians is mixed - correct answers.Monitor World A stage plot shows the location of the Main PA's Left and Right speakers. - correct answers.False When phantom power is turned on at the mixer, +48v is supplied to pin(s) ___ of the XLR plug of a microphone. - correct answers.2 and 3 What is the likely result of a person cupping a microphone? - correct answers.The microphone will be much more likely to feedback Which of the following are connections and/or switches found on a DI box? Parallel output/Amplifier output, Balanced XLR Output. Pad Switch, Ground Lift - correct answers.All of the Above When miking a sound source near a reflective surface, such as miking a person at a podium, the sound can reflect off of the surface an create phase interference known as comb filtering. An approach to solve this problem is... - correct move the microphone as close to the sound source as practically possible/to replace the microphone with a boundary microphone ______ is the total opposition that an electronic device gives to alternating current. - correct answers.Impedance ORTF is a stereo near coincident technique using two cardioid microphones placed at a 110 degree angle. - correct answers.True Why is a condenser microphone so much more sensitive than a dynamic microphone? - correct answers.A condenser mic's diaphragm has very low mass, therefore it can move much faster than a dynamic mic's diaphragm which has much grater mass. The sensitivity rating of a microphone is related to the... - correct of the diaphragm