Inspired by Smith/Lewicki’s overcomplete matching pursuit, I’m looking to put together “spikegrams” starting with Gammatones using matching pursuit.

The problem I’m coming up against in the major Matching Pursuit libraries (mptk, wmpalg, scilearn) is that they ask for discreet atoms and Gammatones are parameterized with attack, decay and phase (not to mention amp/freq). It seems like a dictionary that covers all phases,attacks,decays, and freqs would be super unwieldy.

Am I off base here?  Are there any libraries out there that can do this?   I’m totally naive to this stuff.