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AVIXA Audio Systems CTS Study Guide QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) | GRADED A+ | NEW VERSION

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AVIXA Audio Systems CTS QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) | GRADED A+ | NEW VERSION

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AVIXA Audio Systems CTS QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) |
GRADED A+ | NEW VERSION 2025-2026

What is the International System of Units Abbreviate - ANSWERS✅ SI


What is the SI unit for pressure ? - ANSWERS✅ pascal (Pa)


What is the threshold of human hearing (sound of silence) in Pascals ? -
ANSWERS✅ .00002 Pa


What Pascal level would one need for a risk of hearing loss ? - ANSWERS✅ 20.0
Pa


Why is sound measured in Decibals (DB) vs. Pascals ? - ANSWERS✅ DB is
measured using Logarithms (exponential multiples of 10) vs. linear (one at a time)


Threshold of human hearing (sound of silence) in dB ? - ANSWERS✅ 0 db


Very quiet room sound level ? - ANSWERS✅ 30 dB


Office cubicle sound level ? - ANSWERS✅ 55 dB


Normal conversation sound level ? - ANSWERS✅ 70 dB

, The sound level of yelling ? - ANSWERS✅ 85 db


Rock concert sound level ? - ANSWERS✅ 115 dB


Pain/hearing damage sound level ? - ANSWERS✅ 130 dB


How much dB level is required for a "just noticeable" change in sound louder or
softer ? - ANSWERS✅ 3 dB


A ____ decibel change is required for you to subjectively perceive either a change
as twice as loud as before or one-half as loud as before. - ANSWERS✅ 10


In AV the_______ formula is for power calculations only. - ANSWERS✅ 10 log


In AV the _______ log formula is for voltage, pressure, and distance -
ANSWERS✅ 20 log


Term used to describe no gain or change in attenuation - ANSWERS✅ unity


What two characteristics of a sound wave are responsible for loudness ? -
ANSWERS✅ amplitude and frequency


what is the typical range of human hearing - ANSWERS✅ 20 Hz to 20 kHz

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