Doepfer

andy butler schrieb:
>> Florian's suggestions regarding the waveshapers are very good, too (as
>> always). If you want to keep it portable I'd skip the DSP and just add a
>> delay pedal or whatever suits your style.
> 
> wouldn't you want a filter in the signal chain after a waveshaper?
> (at least a lo-pass)

The wave shaper is a kind of opposite to a filter.
Synthesis with a VCF is based on subtracting partial waves from an 
original signal which has a lot of partials.
Synthesis with a wave shaper is based on adding partial waves to an 
original signal which has only a few or hasn't any partials.

The trick of the wave shaper (as with any exciter or distortion) is: 
Send a dark signal into the wave shaper and control the amount of 
shaping by controlling the characteristics of the input signal.

Example: It is completely boring to send the saw-tooth signal from the 
VCO into the shaper:
VCO-Saw->Waveshaper->VCF
There will not be that much diffence to the original signal (at least 
not that much, that it would be worth spending the money).

But sending in a sine or triangle after it has been the enveloped with 
the VCA, can open up new sound worlds

VCO-Sine -> VCA -> Waveshaper
              ^
           AD-Envelope


And even much better:

VCO-Saw -> VCF -> VCA -> Waveshaper
             ^      ^
         slow AD-Envelope

where the VCF has high resonance. So the Shaper will shape two 
frequencies: The frequency of the VCO and the cutoff frequency of the 
resonating filter.



Florian