Noise Source a Has a Sound Power Level of 99

question 44

Essay

Noise Source A has a sound power level of 99 dB,and noise Source B has a sound power level of 82 decibels.Compute the ratio of absolute sound power between Source A and Source B.
NOTE TO INSTRUCTOR: This examination question goes beyond the scope of the text.It is a technical question intended for students who have an engineering or science background.Supporting lecture notes for instructors who desire to teach this technical extension of Chapter 10 topics are available from the author.

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Definitions:

Indirect Non-Controlling Interest

An ownership interest in an entity that is held through another entity, not directly by the owners.

Direct Non-Controlling Interest

A portion of equity in a subsidiary not attributable directly to the parent company, representing minority shareholders' stake in the entity.