Propellerhead Reason - 1.0.1 Betriebshandbuch PDF herunterladen (Seite 107)

SUBTRACTOR SYNTHESIZER

105

Using the Noise Generator as the Modulator source

As explained earlier, the Noise Generator is internally routed to the Osc 2

output. Hence, if you deactivate Osc 2, and activate the Noise Generator

while using FM, the noise will be used to frequency modulate Osc 1.

✪ With the Noise Generators default settings, this will sound much

like colored noise. But by changing (lowering) the Noise Generator

Decay parameter, so that the noise modulates only the attack por-

tion of the sound can produce more interesting results. You could

also use a combination of noise and Osc 2.

Ring Modulation

Ring Modulators basically multiply two audio signals together. The ring mod-

ulated output contains added frequencies generated by the sum of, and the

difference between, the frequencies of the two signals. In the Subtractor

Ring Modulator, Osc 1 is multiplied with Osc 2 to produce sum and difference

frequencies. Ring modulation can be used to create complex and enhar-

monic, bell-like sounds.

1. Select an Init Patch by selecting “Initialize Patch” from the Edit

menu.

Save any current settings you wish to keep before initializing.

2. Activate Ring Modulation with the button in the lower right corner of

the oscillator section.

3. Activate Osc 2.

You need to activate Osc 2 before any ring modulation can happen.

4. Turn the Osc Mix knob fully to the right, so that only the sound of

Osc 2 is heard.

Osc 2 provides the ring modulated output.

5. If you play a few notes while varying the frequency of either oscilla-

tor, by using the Semitone spin controls, you can hear that the tim-

bre changes dramatically.

If the oscillators are tuned to the same frequency, and no modulation is

applied to either the Osc 1 or 2 frequency, the Ring Modulator won’t do

much. It is when the frequencies of Osc 1 and Osc 2 differ, that you get

the “true” sound of ring modulation.

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Propellerhead Reason - 1.0.1 Betriebshandbuch Seite 107