A speaker is playing music at 90

Question

decibels. A second speaker playing the same music at the same decibel reading is placed beside the first. What is the decibel reading of the pair of speakers?

Answer 1

When two speakers play the same music at the same decibel level, the combined sound level increases by 3 decibels. In this case, if both speakers are playing at 90 decibels, the combined decibel level would be 90 + 3 = 93 decibels.