33401 Audio Systems Certification Exam Review Questions And Answers Verified Solutions.
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Course
33401
Institution
33401
Sound levels greater than _____ dB can cause permanent hearing damage. - correct answer 120
The height of a sound wave above and below the zero point is called _____. - correct answer amplitude
Sound, in its most basic ...
Sound levels greater than _____ dB can cause permanent hearing damage. - correct answer
120
The height of a sound wave above and below the zero point is called _____. - correct answer
amplitude
Sound, in its most basic form, is _____. - correct answer Vibration
One common element of all microphones is the _____, which reacts to sound pressure by producing
vibrations. - correct answer diaphragm
The type of microphone that is most likely to be attached to a tabletop or some other flat surface is the
_____ microphone. - correct answer Pressure-response
The most common microphone pickup pattern is the ______. - correct answer
cardioid
A piezoelectric speaker is most likely used for _____ applications. - correct answer
high-frequency
A woofer speaker operates in the _____ frequency range. - correct answer 20 Hz to
200 Hz
Which of the following speaker types operate in the high range of frequencies? - correct answer
tweeters
, A _____-pass filter attenuates frequencies on either side of a designated band of frequencies. - correct
answer Band
The most common form of distortion created by an amplifier is _____ distortion. - correct answer
harmonic
A(n) _____ transformer has more than one set of secondary windings and can provide different levels of
output. - correct answer line-matching
The purpose of a noise gate is to _____ very low-level input channels. - correct answer
turn-off
Speaker systems for voice reinforcement are usually optimized in the _____ frequency range. - correct
answer 200 Hz to 8kHz
Wiring for 70V paging systems should not be run in close proximity to ______. - correct answer
telephone wiring
Use a(n) ______ to convert an unbalanced connection to a balanced connection. - correct answer
balancing amplifier
Speaker cables should not be twisted much, because twisting _____. - correct answer
increases capacitance
A Volume Unit (VU) meter is used to display the _____ audio levels. - correct answer
average
When using a Sound Pressure Level (SPL) meter outdoors, it should be held ______. - correct answer
with its microphone pointing up
Individual component tests are usually performed in the ______ phase of installation. - correct answer
staging
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