(posted this on the Pd forum, but it was suggested that I e-mail the list as well, so here I am out of lurk mode)

I was working on some patches with bandpass filters that were initially [vcf~], but I ended up deciding not to vary the center frequency, so I replaced them with [bp~].  Now I find that [bp~] sounds different; e.g., a [phasor~ 100] going through a [bp~ 440 3] sounds different from one going out the left outlet of a [vcf~ 3] with [sig~ 440] going into its center inlet.  I couldn't find anything in the help files indicating that they're different other than using control vs. signal for the center frequency, so what's the deal?  How do I replace a non-varying [vcf~] with a [bp~] that sounds the same?

--Stefán