hello martin,

nice to have you on board :-)

if you also want to control the amplitude of a vc-lfo,
you just have to add another vca (f.e. a130 or a132).
feed the lfo output into the vca and control the
lfo-amplitude by modulating the vca with another lfo,
adsr, midi controller or something like that.

i guess that the quad adsr will be a pretty cool module
for your task. i heavily use mine since i got it
and i can highly recommend it. the "end-of-trigger" outputs
will do some magic things for your env-linking task.

if you want clock divisions by 3 or 6, you can do that
with the a163 vc divider. as usual it is cool to have both
clock sequencer and vc divider, this will give you
the divisions 3 and 6 simultaneously.

regarding the cv-mixer, i recommend the a138c polarizing mixer.

it is a good decision to have plenty of vca's in the system.
i suppose that you often want to process cv-signals with it,
so you should stay away from the a135 quad module, because
it can only process audio signals. the a132 is fine,
it doesn't need lots of space and it is not expensive.

hmmm, the easiest way to create complex lfo/env patterns
difficult, there are a lot of possibilities for that,
depending on you style of working. the a143/1 is
interesting for that. i use a combination of a143/2
and a138c more often. if you want to add some random
triggering, take a look at the a149/1 and a149/2 combination.
add an a170 or a171 slew limiter to derive smooth clocked
random voltages.

regarding filters, it is largely a matter of taste.
if you want rough and distorted sound, the a106/1 is
a very good choice. if you don't need a highpass output
(i love highpass filtering), you should also take
a look at the a108, still one of my favorites.

oh and don't forget to add one or two a180 multiples.

best wishes

ingo



--- In Doepfer_a100@yahoogroups.com , "martin_rudling"
<martinrudling@h...> wrote:

> Hello everybody!
> I guess you´ve had a lot of posts like this one and maybe it isn´t
> too amusing... But I really have to ask for help somewhere because

I

> have nowhere else to go at this point.
> I´m Martin, age 27, from Sweden. My interest in making e-music
> started with software, mainly the NI Reaktor application, which is
> fun and very educating, but sound sucks, which is why I very
> recently was guided to the Doepfer-catalogue. (((passed ideas of
> Akai MFC-42, and the Radikal Techs new "Spectralis" groovebox with

2

> Analogue fltrs, and mutronics Mutator. I left the first

(Akaifilter)

> because I realized it´s far from the best, the second (spectralis)
> because it´s partly more than I need and quite expensive, and the
> third idea (Mutator) simply because I can´t find it))))
> Ok, I´ve been trying to find out what modules that should be
> included in my first rack-investment. (one rack is enough for this
> time around, due to economic and space-concerns)
> I will try to explain here what I want the system to do, at least.
> I have 2 main goals.
>
> 1 Amplitude modulation
> 2 Filters modulation. (2 fltrs in mind: Multimode & Extreme
>
> Well, this seems to be very easy to fulfill, but looking closer at
> my needs makes things quite confusing: It¨s about creating the
> curves/envelopes to trigger the VCA. I need them to be "rythmic"

and

> complex. To describe it easily, I want to tell you about a function
> included in my old EMU-Morpheus synth. (The function is VERY
> common...) I let LFO1 trigger LFO2 depth (each LFO has different
> rate), and then send the "sum" to the Amplitude mod. You probably
> realize the result; a "rythmic tremelo" effect, not just a
> basic "chopper". But the possibilities to make

the "pattern"/"curve"

> more complex than this usually end here. So. What I want my A-100-
> system to consist of is the possibility to, lets say "chain" more
> than 2 envelopes (maybe 4 or even more) in a serial connection

where

> they trigger eachother. The main difference inbetween will be that
> they have different BUT PROPORTIONAL and CONSTANT rates/freqs. What
> will probably do a lot of the job is simply a clock divider. Sadly
> it seems the module only has 2,4,8,16 as N-factors, and I really
> need 3 and 6, to create 3/4 or triplets sounding curves. A CV-mixer
> is also in my planning and maybe it could be a good idea to put
> several VCA:s, (anyone tried to serial-connect these )
> I don´t know if I should go for the Quad ADSR or the Quad LFO
> modules, or maybe both ( )
> What is quite obvious (D. Doepfer confirmed this earlier today) is
> that the module VCLFO will NOT help me because it doesn´t modify

the

> depth of the envelope, it modifies frequency which isn´t what I
> need. Maybe the clock sequencer is a useful tool (My planning does
> NOT include the big seq. module, because to me it appears to
> be "overkill" regarding my "rythmic-tremolator" goal. ( )
> Ok. To summarize a little I will take make qustion to a wider

level:

> What is the most efficient way to create very individually designed
> rythmic and complex lfo:s/envelopes
>
> Concerning the no 2 of my goals; filters mod, I aim to do it thru
> midi in "realtime" / "live". (Obviously, I´ll have to add the midi-
> CV module for this). I suppose there isn´t much more to say about
> this, although the filters are the absolute "top" reason that took
> me to the Doepfer in the first place.
>
> Ok. Thanks for your time, reading this far!
>
> Regards
> Martin