Wigner Ville distribution of a Gaussian Atom and a Complex Sinusoid

This example demonstrates the Wigner Ville distribution of a signal composed from a Gaussian atom and a complex sinusoid with constant frequency modulation. Although the representation does isolate the atom and the sinusoid as independent phenomena in the signal, it also produces some interference between them.

Figure 4.8 from the tutorial.

from tftb.generators import fmconst, amgauss
from tftb.processing import WignerVilleDistribution

sig = fmconst(128, 0.15)[0] + amgauss(128) * fmconst(128, 0.4)[0]
tfr = WignerVilleDistribution(sig)
tfr.run()
tfr.plot(show_tf=True, kind='contour')