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If the sinusoid waveform of an LFO modulates the volume of an amplifier, the sound
will increase in volume then disappear in a varying manner following the speed (the
frequency) of this LFO. This will produce a tremolo effect.
A sinusoid waveform on an LFO modulating the frequency of an oscillator would
produce a vibrato effect. The frequency of this oscillator will thus be modulated up
and down.
With an LFO sinusoid wave modulating the cut-off frequency of a lightly resonant low-
pass filter, you will obtain a «wah wah» effect.
Now to finish, here is the diagram of a complete synthesis voice on the CS-80V
containing:
1 oscillator (VCO)
1 noise module
1 mixer (mixing of the 2 VCO and the noise module towards the low-pass and high-
pass filters)
2 filters (VCF) high-pass and low-pass
1 amplifier (VCA)
2 envelopes (one for the filters and the other for the VCA)
1 LFO
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ARTURIA – CS-80V – USER'S MANUAL
The sub section of the CS-80V
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