hi everyone,

when i was answering joe's posts about the modular vocoder, i spoke
of one of the missing functions from all the combined Doepfer LFO's.
the variable waveform shape of the A146 LFO
does not have voltage control of the waveform. it's sad that the LFO
doesn't have that function among other things. i think a combination
of all the functions from the 3 LFO's a, plus VC of the Variable
Waveform Shape and a Quadrature Sync Input with a pot to control the
sync of another LFO.

i whipped up a mock up of what i call the A149 Voltage Control
Variable Waveform LFO. please don't laugh my Photoshop skills, they
are non-existant. i am posting the draft in the files section.
remember this a first draft and i am sure with suggestions, the
function layout could improve.

since i am not an engineer and can't design the circuit myself, i
don't know if the theoretical functions of the LFO are possible. but
from all the time that i have experimented and played with different
modulars, as well as reading block diagrams for different modules, i
am led to believe that this LFO could be produced. at what price i
would not know.

to get a crazy quadrature relationship from whatever amount of lfo's
you wish to sync. you line up two or more lfo's together. you mult
the Positive Pulse Out of the first LFO to the Reset Inputs of the
following lfo's for clocking the other LFO's in the tempo. you could
also use Clock Dividers for divide down relationships between several
LFO's. then you take a mult of the regular Pulse Output and patch it
to the Sync Inputs of the other LFO's you wish to have a quadrature
relationship with( for a parallel relationship) or you could daisy
chain them one after the other ( for a serial relationship).

now here is the kicker, since there is a pot associated with each
sync input, the pot becomes a variable modifier for the incoming sync
signal. since its variable, you can really get wild sycopated outputs
to drive multiple Sequencers, Envelop generators etc. you could also
the take the last LFO's Positive Output and patch it back to the
first LFO create some serious choatic quadrature outputs. now imagine
having a few of these Lfo's to control a fully loaded Doepfer Modular
Vocodoer, i am jonesing to have such functions with my modular.


i located the sync input above the Sine Output, so when you put
another LFO next to it, it sits right next to the Positive Pulse
Output. you could use really short cables to avoid patch cord
clutter. you could also hard wire the LFO's together.

these ideas came to me after i drafted the mock up. it might be a
good idea to have buffered double outputs for both of the Pulse
Outputs to avoid the issue and head ache of multing. maybe a Voltage
Control input for the Sync Input to have modulatable Sync for each
LFO.

phew that was a lot for one sitting, i hope i didn't bore you with
these ideas. these are the ideas and patterns i like to experiment
with when it comes to modulars. that's i why i am always sad when i
see functions that could have had voltage control attached to the
module in the first place, but are not included. if there is enough
interest, i will make a poll and see what happens. maybe Doepfer
could take the lead and run with it, i sure hope this happens. thanks
for your time and enjoy.

cheers,
RM