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frequencies, as well as the timbre of the sound.
The ‘classic’ way of modulating a filter is using an envelope to open and
close it, creating the effect of a sound rich in harmonics at the beginning
which fade out at the same as the envelope goes down. The
AD ENV 1
is
already patched to the
VCF
CV FREQ IN
.
Now set the first patch of this manual. You can find it in the
FIRST STEPS
section. If you like you can connect an square wave from an LFO to the AD
ENV 1 to play it automatically. Trigger the
AD ENV 1
and see how the
VCF
is
affected by the modulation and how it shapes the sound.
Change all the filter parameters and experiment. Try first with the FREQ pot
and the CV FREQ attenuator. Small changes in these two potentiometers
will affect the shape of the sound a lot . Try middle and extreme settings.
Change the values of the AD ENV 1 potentiometers also. Make the sound
longer and turn the ATTACK pot CW.
Now experiment with the
VCF
built in mixer. Turning the IN 1 pot fully CW
will be overdrive the input. This kind of saturation will be more evident
depending on the wave used. Try different parameters. If you want a clean
sound leave the mixer pots in the half position. The resonance will be also
affected by the amount of signal in the input section. If the mixer
potentiometers are fully CW the resonance will have a little effect. By the
other side if the potentiometers are fully CCW the
VCF
will self-oscillate at
maximum
Q
, creating a pure sine wave.
Note that the AD ENV 1 will affect the
VCA2
also. If you want to listen how the
envelope only affects the
VCF
, in the
VCA2
turn the BASE pot fully CW and the CV
ATT fully CCW.
Some tips and exercises to experiment with the filter:
1. Try different waves at the input. Note that the inputs are prepatched to
XTOSC·Y
and
OSC·X
square and saw tooth waves respectively.
2. Modulate the
FREQ
with different signals. Try LFOs, sound, noise,
S/H
.
3. Connect the output of the
VCF
to one of its own inputs.
4. Connect the output of the
VCF
to the
CV
input.
NOTES ON THE VCF
1. LPF is 12db/oct and HPF is 6db/oct.
2. Hot signals in the input will overdrive the input.
Summary of Contents for ANTS!
Page 1: ...ANTS PLANKTON ELECTRONICS ...
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