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NodeBB forum in English. 12 sections tracked: technical issues, I/O hardware, diy, tutorials, libpd / webpd, patch~, output~, this forum, abstract~, extra~, pixel#, news and Off topic.

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Trying to understand precision in Pd

@jameslo I just combined all your patches into one and they all behave like yours! I don't know what was going on earlier, perhaps a typo in [expr]? But I guess it wouldn't have been created. Now the numbers are toggling between 255 and 256 and 0 and 1.5258e-05, like your screenshots.

Fractional Fourier Transform?

almost 2 years later ... @ewanbristow pointed me to some recent tools for max that utilize the fractional fourier transform (thanks!). noting this here in case someone stumbles upon this post some day: https://behzadhaki.com/works/max/frft/

Cannot load externals

I see. It is because I am on aarch64. If I really cared I would compile what I need, but not for ARGOPd. thank you for your attention, sorry about the noise

Online Pd Community Meetup // Jul 2026 @Discord

Hello Pd people, It's time for our bimonthly virtual Pd community meetup at the Pd Discord Server. This Sunday, July 26, at 4 pm UTC. The purpose of these sessions is to make a space for showcasing projects involving Pure Data, asking any questions, joining the conversation, or just listening. Here's the link to the Discord server: [ https://discord.gg/aNd8RrT

vanilla wavefolding implementations

@jameslo Your expr~ version has some interesting properties. When I input a sine wave and set $v2 to an odd integer, the output is a sine wave whose frequency is $v2 times the original frequency. You would never get sine wave output from traditional wavefolding implementations. When $v2 is an even integer, you get odd harmonics (as expected) with a peak at the $v2-1 harmonic. I'll continue to use traditional techniques for wavefolding, but I think your expr~ could be very useful for something else I'm working on. Thanks for posting it! Edit: I've been experimenting more with this. The behavior I described above occurs when the input sine wave has an amplitude of 1 to -1. If the amplitude is less than that, you get a limited number of harmonics. For example, if the sine wave's amplitude is 0.99 to -0.99, and $v2 is an odd integer, you get a large peak at the $v2 harmonic, small peaks at lower harmonics, and no peaks at higher harmonics.

Granular patches

some of these might be useful to you http://puredatabase.wikidot.com/wiki:granular-synthesis

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