Levels and decibels
A reminder of physical acoustics

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Levels and decibels
A reminder of physical acoustics

Author : Gilles REIGNER

Publication date: December 10, 2003 | Lire en français

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2. Levels and decibels

2.1 Power

A sound source radiates power, and a portion of this power propagates through the surrounding fluid. Sound power is the energy emitted per unit of time (figure 1 ).

.Sound power W produced by an omnidirectional source...
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