Peak



Define:

The peak of a wave is like the top of a wave. Like the peak of the mountain, but the word is used for a wave. The peak is the highest point of the wave. The peak is above the trough and the equilibrium. Its the highest positive point on a wave.



Unlike Amplitude, peak is..... the top of the wave not measure the change from the peak to the equilibrium to the trough.


sources:

http://www.indiana.edu/~emusic/acoustics/amplitude.htm