chirpletringmod

This is the Python implementation of chirplet sound analysis by heterodyning, as described in the following publication:

D. Stowell and M. D. Plumbley, Framewise heterodyne chirp analysis of birdsong. In: Proceedings of the European Signal Processing Conference (EUSIPCO 2012), August 2012.

You can think of this as being like a spectrogram analysis, but augmented with an extra dimension, that of slope.