In basic acoustic thoery a sound source reflects across a boundry in a fasion similar to light. The magnitude of the reflected wave can be determined by adjusting it for the reflection loss and the distance traversed.(adsbygoogle = window.adsbygoogle || []).push({});

I am looking at a scientific paper from the 70's. In it they use the following equation to caculate the magnitude of a wave emanating from an imagexmeters away.

[tex]

y = \frac {1} {x}

[/tex]

My intuition would tell me that the magnitude of a wave emanating from an image as a function of distance would be described by the following:

[tex]

y = \frac {1} {4 \pi x^2}

[/tex]

Does anyone know if the former equation is really correct? Why is the inverse square law not used?

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# Magnitude of acoustical image

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