6-8 Structural Influence On A Membrane

Does a membrane need a structure?

If the membrane existed alone without any structure then the compression on one side would occur at the same time as the rarefraction on the other side. The opposite phrases would cancel each other out and no sound wave could be produced. By having a kettle on the bottom of the membrane, the sound wave from the underside cannot interact with the sound wave from the upper side. This increases the radiating ability and allows the sound waves to be heard by the audience.

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