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Table Of Contents
Choosing a Different EFM1 Modulator Waveform
In classic FM synthesis, sine waves are used as modulator and carrier waveforms. The
EFM1 Modulator oscillator provides a number of additional digital waveforms, which
extend its sonic capabilities significantly. These waveforms contain a number of additional
harmonics which add a new level of richness to the resulting FM sounds.
To choose a different waveform
µ
Turn the Wave parameter knob.
µ
At the full left position, the modulator produces a sine wave.
µ
As you turn the Wave parameter clockwise, you will step/fade through a series of complex
digital waveforms.
Working with the EFM1 Modulation Parameters
FM synthesis is, at its core, caused by the intensity and type of modulations that take
place in the signal path. Therefore, the “modulators” outlined in this section have a
different impact (and role to play) than equivalent envelopes and LFOs found in analog
synthesizer designs.
LFO parameters
Modulation Envelope
FM Depth
Modulator Pitch
Modulation Env(elope) sliders: Controls both the FM (Intensity) and Modulator pitch
parameters over time. The envelope is triggered every time a MIDI note is received.
Attack slider: Sets the time it takes to reach the maximum envelope level.
Decay slider: Sets the time it takes to reach the Sustain level.
133Chapter 6 EFM1