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Chapter 4 EFM1 111
Modulator parameters
•
Harmonic knob: Rotate to set the tuning ratio between the modulator (left) and carrier (right)
oscillators. See Set the EFM1 tuning ratio on page 112 .
•
Fine (tune) knob: Rotate to adjust the tuning between two adjacent harmonics, as determined
by the Harmonic knobs of both oscillators. The range of this control is ±0.5 harmonic. In the
center (0) position, Fine tune does not have an eect. Click the “0” to center the Fine tune knob.
Depending on the amount of detuning, you will hear one of the following:
•
A subtle “beating” of the timbre if lower detuning amounts are used
•
New harmonic and inharmonic overtones if high detuning amounts are used
•
Wave knob: Rotate to choose a dierent waveform for the modulator oscillator. See Choose a
dierent EFM1 modulator waveform on page 112 .
•
FM (Intensity) knob: Rotate to set the amount of carrier oscillator frequency modulation by the
modulator oscillator. As you adjust the FM knob, the intensity—and number—of overtones
increases, making the sound brighter.
Note: Although the technology behind it is very dierent, you could compare the
FM (Intensity) parameter with the Filter Cuto parameter of an analog synthesizer.
Carrier parameters
•
Harmonic knob: Rotate to set the tuning ratio between the modulator (left) and carrier (right)
oscillators. See Set the EFM1 tuning ratio on page 112 .
•
Fine (tune) knob: Rotate to adjust the tuning between two adjacent harmonics, as determined
by the Harmonic knobs of both oscillators. The range of this control is ±0.5 harmonic. In the
center (0) position, Fine tune does not have an eect. Click the “0” to center the Fine tune knob.
Depending on the amount of detuning, you will hear one of the following:
•
A subtle “beating” of the timbre if lower detuning amounts are used
•
New harmonic and inharmonic overtones if high detuning amounts are used
•
Fixed Carrier button: Turn on to disconnect the carrier frequency from keyboard, pitch bend,
and LFO modulations, thus allowing you to produce a carrier tone that is free of these
modulation sources.