[sdiy] vocoder : synthesizer part

[jbv]

Hi,

I just noticed that in the synthesizer part of a vocoder
the design can vary : some (like Elektor vocoder AFAIR)
place the VCA after the BPF, while others (like Roland
SVC-350 or the Moog vocoder) place the VCA before the
BPF.
Is there any good reason to choose one design or the other ?

Thanks,
JB