Pre-processing for (Training for real-time NMF)

First, a little bump (for @tremblap) about extracting an IR from an audio file, as it would be good to revisit the filtering aspect of this process.

And more excitingly, the new(ly fixed) @filterupdate 1 is having some nice results on my dicts.

Just the raw @ranks:

And some @filterupdate 1 with @iterations 1000:

I still haven’t tested the matching itself (for reasons expressed elsewhere), but this is a promising step.

I also want to test out what @groma suggested in the HPSS thread: