Fluid.sinefeature optimizing spectral features and no click on update

[rodrigo.constanzo]

@bledsoeflute

I would be interesting to update .sinefeature at each onset detection. Problem is that you get the features of the transient, but if you delay the update, you of course get a click or jumps in audio. I don’t want to just use fluid.sines because I still want my own osc bank for reasons mentioned above- unless there is a way of getting under the hood I don’t know about.

You can do a circular-buffer-type thing where you use fluid.bufsines~ to analyze a window and go from there. This is my go-to approach in SP-Tools, and is what sp.sines~ does. Depending on the @fftsettings this can get heavily skewed by the transient, as you mention, but I find it quite useful still.

@bledsoeflute

As it is, I notice that the fundamental is often missing

This isn’t as relevant for realtime stuff, but for offline/buffer analysis I found that computing the time centroid and then only analyzing the audio before that point gave me much better results. I think I work through (including code examples) in this thread from a while back.

I wonder if maybe combining something with chroma or something could help nail down the fundamental more? I found I used to get really good results from sigmund~, which I think takes a different approach to that too.

Also, getting a bunch of missing file errors:

go.onepole.hz: go.onepole.hz: operator/abstraction go.onepole.hz not found in gen domain dsp.gen
go.line.ms: go.line.ms: operator/abstraction go.line.ms not found in gen domain dsp.gen
go.ramp2trig: go.ramp2trig: operator/abstraction go.ramp2trig not found in gen domain dsp.gen
go.ramp2trig: go.ramp2trig: operator/abstraction go.ramp2trig not found in gen domain dsp.gen
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