Non-linear overlaying of waves in water

From: heiko ackermann (heiack_at_gmx.de)
Date: 01/23/05 

Date: 23 Jan 2005 09:00:18 -0800

Hey,
If I overlay two acoustic waves with different frequencies in water,
and my amplitudes are high enough for linear effects.
There will be four waves, the two wave frequencies and the new two
ones, f1-f2 and f1+f2

Now I want to know if what's about the amplitude of the two new ones.
Will the amplitude change, or will it be the always the same.

In the linear case the beating ampltidue will change, but whats about
the non-linear chase.

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