1. Swan screenshots

click for larger images.

1.1. Frequency and amplitude modulated harmonic signal

This is the results for the mod_sin.txt surrogate signal, shipped with Swan.

rgbswab colourmap:

Selected rhythm:

1.2. Two independent rhythms:

Result for surrogate data:

fs = 62.5
t = arange(0,60,1.0/fs)
s = 2*(sin(4*pi*t) + cos(16*pi*t)) + randn(len(t))

2. Just pycwt in matplotlib

CWT with the first derivative of Gaussian (available in the cvs version) of experimental data. Data: compound action potentials, extracellular registration from a frog sciatic nerve.