very good, I never really used biquad myself. Then I'll adapt the patch to use the vanilla version instead.

Am Sa., 19. Jan. 2019 um 04:36 Uhr schrieb Alexandre Torres Porres <porres@gmail.com>:
Em sex, 18 de jan de 2019 às 13:38, João Pais <jmmmpais@gmail.com> escreveu:
a neutral filter coefficient is in cyclone 1 0 0 0 0, in vanilla 1 -1 1 -1 1.

Actually, a neutral filter coefficient in vanilla  is 0 0 1 0 0, if I understand what you mean by "neutral filter", which I'm assuming is just the input signal going out unchanged, using "1 -1 1 -1 1" works but it's just unnecessary, as you're cancelling out the coefficients. In the same way, you could, as an example, use the same "1 -1 1 -1 1" in Max's biquad~ and it'd work, as the feedback an feedforward coefficients are also cancelling things out. Hope I made myself clear...