Hi Daniel, Did you smooth the frequency changes with a [line~] object or something else before sending to [vcf~]'s 2nd inlet? You can do the same to make gradual transitions for Q changes, but since the Q inlet doesn't take a signal you'll have to use [line] instead.
On Sat, Feb 18, 2023 at 8:19 AM Daniel Martin via Pd-list < pd-list@lists.iem.at> wrote: > Hello Peter, thanks for the help. Unfortunately it doesn't work with the > [vcf~] object either. As you say, the problem is that I jump from a > frequency to the next non-continuosly. Is there a way to do that without > interrupting the signal and without noise? > > Daniel > > > > > > El viernes, 17 de febrero de 2023, 23:52:22 GMT+1, Peter P. < > peterpar...@fastmail.com> escribió: > > > Daniel, can you try the [vcf~] object instead of [bp~]? The noise you > hear most likely happens when you change the filter frequency > non-continuously. > > * Daniel Martin via Pd-list <pd-list@lists.iem.at> [2023-02-17 20:15]: > > Dear PD-Users, I'm having a problem with a patch > that filters overtones from a sample. I use for that a bp filter. The > center values for frecuency, Q and output volume are changed according to > which overtone one wishes to hear. It is so configured, that one can select > between overtones 3 to 17, pressing keys d, r, f, t, g, y, h, u, j, i, k, > o, l, p and ñ (I have a spanish keyboard). The problem is when I want to > change between overtones: one hears a noise. I solved that partially by > reducing the output volume of the bp filter to 0, than changing the filter > parameters values and then raising up the volume again to 1. That works > only with adjacent overtones (for ex. overtone 3 to 4 or 3 to 5), but with > larger jumps (for ex. 3 to 15), the noise comes again, the larger the jump, > the stronger the noise. > > > > I send attached the patch and a sample (Fagot). You need to > open the sample ("open file" bang), select the third Vradio-square (Fagot, > that sends specific Q and volume values for filtering this sample), then > start the sample (key "a", it loops itself), then overtone selection (keys > d, r, f, t...). The filter is in the suubpatch "Overtone_Filter". If you > try for example changing from overtone 3 ("d") to 12 ("i") you'll hear a > strong noise... > > I hope you can help me! I'll use this for a research on overtones > effects on human health. > > Greetings!Daniel Salva > > > > > > > > > _______________________________________________ > > Pd-list@lists.iem.at mailing list > > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list > > > > > _______________________________________________ > Pd-list@lists.iem.at mailing list > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list > _______________________________________________ > Pd-list@lists.iem.at mailing list > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list > -- William Brent “Great minds flock together” Conflations: conversational idiom for the 21st century www.conflations.com
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