3.20 preventing clipping on the filters:
(how not to act like a memorymoog)
The Andromeda overdrives on the filters rather easily. This is good – it allows you to get that
aggressive Memorymoog type sound. However, sometimes you prefer a smoother sound.
The following are some collected tips on getting a smoother sound out of the Andromeda.
From Colin:
A resonance level of about 62, levels the filter slope off nicely. anything higher starts to boost and
anything lower smooths the slope out. Also it would seem, that to prevent clipping, at high
resonance. You wpould need to reduce the VCOs to below 15 on the Pre-filter mixer to allow room
for the resoannt peak, or else you get that overdrive effect.
3.21 more ripping filter techniques:
From Alistair Johnson:
If you want something ripping, turn the resonance of Filt1 way up. Send its bandpass output to Filt2.
Press the bandpass invert knob. Also allow the bandpass output of Filt1 to go to the mixer. And
mess arround with the cutoff of both filters till you have something that sounds right.
3.22 filter feedback:
Filter feedback was an effort by the Andromeda engineers to use the old Minimoog trick of
adding some feedback from the oscillators to the VCF pre-mix, to add beef. In reality, the
feedback on the Andromeda acts a little bit differently than the Minimoog. It does add some
punch and some resonance to the mixer, up to the point of slight audio distortion and
harshness.
I find it useful for more than just imitating a Minimoog. It seems to add a delightful warble
to any patches that need “ extra twang” . I encourage you to experiment.
To use filter feedback, simply press the “ filter feedback” function in the external section.
Now, turn the noise / external knob up. Note that noise also comes here, so if you don’ t
want any noise in the patch, you will have to use soft knob one to turn the noise function off.
Below are some hints that might help you in utilizing the filter feedback feature.
Colin has pointed out that for the 12dB filter (filter 1), the band pass filter reacts heavily to
filter feedback, self-oscillating with minimal effort. The high pass filter self-oscillates pretty
good with filter feedback as well. However, the low pass filter does not self oscillate very
much
3.23 adding white noise:
Colin posted that adding around 1% white noise to some patches adds some extra depth.
Experiment with this, for some patches it works well and for some it does not work well at
all.
3.24 formant effects:
Good vocal effect sounds require a “ formant” type of effect. Although other synthesizers are
better equipped for pure formants, the Andromeda has two resonant filters; that alone is
enough to construct a good vocal patch with two formant peaks.
The default program “ Wheeldown = Yeah” is a good example of this type of effect. In this
patch, filter 1 is set on bandpass mode, filter 2 is set as normal (lowpass). The filters are set in
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