Wavelet Transform and Scalogram of Windowed Sinusoid.

Cuthbert Nyack
The applet shows a scalogram of a signal consisting of sinusoids with rectangular, Hamming and Gaussian windows. The Scalogram is built up from 100 time values and 40 s values.

Rectangular Window.




When enabled, the following gif image show how the applet should appear. Because of the edges, the spectrum is spread out at the beginning and end of the pulses.
Hamming Window.



When enabled, the following gif image show how the applet should appear. In this case the scalogram looks more like it contains 2 sinusoids.
Gaussian Window.



When enabled, the following gif image show how the applet should appear. The appearance is similar to the Hamming window.

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COPYRIGHT 2007 Cuthbert Nyack.