AVIXA Recognized AV Technologist Test

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the AVIXA Recognized AV Technologist Test. Engage with interactive quizzes, multiple choice questions with detailed explanations, and grasp the essential AV concepts needed for your certification.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

It requires a _____ dB change for people to perceive a change in sound that is either twice or half as loud.

The correct answer is: 10

A change of approximately 10 dB is often considered the threshold at which people can perceive a change in loudness that makes sound seem either twice as loud or half as loud. This concept is rooted in the logarithmic nature of sound perception; specifically, human hearing operates on a logarithmic scale where each increase of about 10 dB roughly corresponds to a perceived doubling of loudness. This means that when sound intensity increases by this amount, the perception to the human ear aligns with a significant change in loudness, resulting in an auditory experience that feels notably different. The rule of thumb is widely accepted in acoustics and sound engineering, making it a fundamental reference point for understanding loudness perception.