6.3.8. Two operator FM (Two Op.FM)
Description:
FM synthesis has its origins in the work of Dr John Chowning at Stanford
University in the late 1960s. The first FM synthesiser was a mainframe computer! Think of a
room full of refrigerators, and you'll have an idea of what that was like.
Dr Chowning's theory was that an entire range of acoustic instrument emulations would
be possible by modulating a waveform with others that are tuned to the harmonic series.
He discovered that deviations from the harmonic series (i.e., inharmonic relationships)
resulted in bell-like tones and other intricate sounds. Many of the timbres that came easily
to FM synthesis had proven difficult for the reigning generation of analog synthesizers to
reproduce.
This model, despite being a simple implementation of FM, is still capable of creating a wide
range of sounds. It consists of two sine-wave oscillators, each modulating the phase of the
other.
Ratio:
Sets the frequency ratio between the oscillators.
Amount:
Sets the modulation index.
Shape:
Sets a feedback amount, in the form of operator 2 modulating its own phase.
6.3.9. Granular formant oscillator (Formant)
Description:
Granular synthesis is a synthesis method developed fairly recently. It's a
technique whereby a wave is chopped in tiny pieces called "particles", which are then
rearranged, multiplied and added in multiple ways. In this model, the particles are
rearranged into formants and filtered waveforms.
Interval:
Sets the frequency ratio between formants one and two.
Formant:
Sets the formant frequency.
Shape:
Sets formant width and shape. This controls the shape of the window by which a
sum of two synchronized sine oscillators is multplied.
Two operator Oscillator
Model
Granular formant
Oscillator Model
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Arturia - User Manual MicroFreak - The Digital Oscillator
Summary of Contents for MICROFREAK
Page 1: ...USER MANUAL...
