If you're open to other processing options, I made an extern a while back that does FFT filtering relative to harmonic numbers. You feed it a signal and the continuous MIDI pitch output from [sigmund~], and then based on scalar values from a table you can boost/cut the amplitude of any given harmonic by index. I haven't maintained it at all, but you can get the source, help, and win/mac binaries here:
http://williambrent.conflations.com/pages/research.html#pitchEnv
That should give you the effect you want if I'm understanding you right. But if you specifically want to stick with analysis/resynthesis using [sigmund~], I gave a shot at a solution that produces mute/play flags for each [sigmund~] "track" by index. I did use [tabletool] from the timbreID library for a nearest value search in a table, and batch freq/MIDI conversion. But if you install timbreID you can try this out. I just did the logic to produce the mute/play flags, so there's more work to do sorting how to apply them.
I may fold something like this into the next version of my [sigmund~] companion oscillator bank [martha~], so if I do I'll let you know!
William
On Fri, Mar 29, 2019 at 11:09 AM Peter P. peterparker@fastmail.com wrote:
I am trying to mute every even partial of an integer series of partials from a harmonic oboe sound tracked with [sigmund~]. I find that this is non-trivial as it is hard to determine -the order of increasing frequencies (sigmund orders them by strength) -which partial is the lowest for a harmonic sound.
Does anyone have a good idea how this can be done either in realtime or offline (via tables perhaps)?
Thanks! P
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list