Computer Music

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4. Create an FM bassline using Massive X’s phase modulation oscillator­s

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1 > Turning our attention to the latest Massive X, this is now the weapon of choice for countless producers. Grab the demo from www.native-instrument­s.com. We’ll stick with the modulation theme now, using the synth’s phase modulation options to create a frequency modulation bassline. Begin with the default Init – Massive X patch.

2 > Play a simple monophonic riff in the G1 region. Only Osc 1 is playing, and by dragging its wavetable Position dial fully anticlockw­ise, we’re left with the most basic of sounds: a pure sine wave. This will be our ‘carrier’ (ie, audible) oscillator.

3 > Massive X’s two inaudible Phase Modulation oscs – ‘operators’ in FM speak – can modulate the frequency of the two audible oscillator­s. Lighting up Osc 1’s PM1 button engages the first Phase Modulation osc’s effect over Osc 1, and raising the PM1 dial intros the effect. Hear how the sine’s timbre gets more complex as the PM osc adds sideband harmonics.

4 > To control the influence of PM1’s effect over the course of each new note, hook up a modulator (the Exciter Envelope is a good choice) to quickly open and close Osc 1’s PM1 Amount. A tight introducti­on over the front end of each note creates an initial percussive strike, giving us a typical FM house or techno bass sound.

5 > Contrastin­gly, by introducin­g the modulation envelope’s influence over PM1 amount more slowly, the phase modulation becomes less of a sharp ‘donk’ and more of a ‘warp’ effect. This is more of a bass sound you’d hear in garage or grime. Take time adjusting envelope settings to fine-tune the timbral change over time.

6 > The PM oscillator’s Ratio amount sets the odd osc’s tuning in relation to the main oscillator. Experiment with different values to hear the impact this makes to the resulting change in timbre – high ratio values create are useful for creating more dissonant ‘screech’ effects, while a lower ratio of ½ gives us a thicker ‘wob’ timbre.

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