6-5 Initiating Vibrations On A Membrane

What affects the vibrations on a membrane?

The place on the membrane that is struck affects the oscillations that are produced. In order to get a vibrant sound you want to avoid striking the nodal lines. (This is why you will get a dead sound on a drum if you strike it directly in the center.)

What happens to the relative intensity when a membrane is struck?

The intensity increases as you strike closer to the edge of the drum. (This is why a drum will produce a louder when struck near the edge of the drum.)

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