> just a stupid question, is there some internal link between bands on a
> vocoder? i'm asking because i'm wondering if 2 8 band vocoders = a 16
> band vocoder or if it doesn't work that way. -Nate
No, ∗this∗ does not work at all, for obvious reasons.
But even when you double the number of bands and adjust the filter
frequencies accordingly, your efforts will have to be way more than doubled.
As a (very rough) rule of thumb, doubling the number of channels means
3 things:
(1) Doubling the number of channels (obviously)
(2) Making the filters more selective / small band -> double the amount
of circuitry for each filter
(3) More selective -> need lower tolerance components or larger, less
sensitive filter topologies -> more expensive components, or more
components
These 3 factors ∗multiply∗. So as a rule of thumb, the effort for the
filters
will increase more than quadratic, less than cubic.
Number of channels x 2 => effort x 4 ... x 8
There ∗are∗ other things to consider, but now you get an idea while
an 8-channel Paia can be so cheap and a 20-band Sennheiser or
22-band EMS 5000 are more than just 3 times as expensive.
JH.