The decibel scale is
A) Expresses the logrithim of algebraic difference between the loudest and weakest audible sounds
B) Expresses the logarithm of the ratio of the sound of interest to a reference sound
C) Expresses the logarithm of algebraic sum between a sound of interest and reference sound
D) None of the above

Question

Quizplus · Accepted Answer

The decibel scale expresses the logarithm of the ratio of the sound of interest to a reference sound. This reference sound is usually the lowest audible sound to the human ear, which is assigned a value of 0 decibels. This means that any sound that is louder than the reference sound will have a positive decibel value, while any sound that is weaker than the reference sound will have a negative decibel value.

The Decibel Scale Is