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