What is the decrease of the speaker volume in dB if the distance from the speaker to the sound source is doubled?
A)3 dB
B)4 dB
C)2 dB
D)6 dB

Question

Quizplus · Accepted Answer

Speaker volume decreases by 6 dB if the distance from the speaker to the sound source is doubled.
Key Takeaway: Sound gets weaker as the distance from the source is increased. The Inverse square law specifies that when the distance from the source is doubled, the sound pressure weakens by 6 dB. So at a 6-ft. distance a speaker produces 89 dB. If the distance is increased to 12 feet, the speaker now produces 83 dB.

What Is the Decrease of the Speaker Volume in DB