![]() 1: Three Simple Modulationsįigure 1: A simple synthesizer. This means that, at first, we must confine ourselves to a discussion of the simplest forms of cyclic modulation. Nevertheless, if we are going to graduate on to the more complex aspects of the subject, we're going to have to exercise some discipline. Modulation is undoubtedly the most involved (and involving) subject in all of synthesis. If you think that this simply means using an LFO to add a bit of vibrato, think again. The missing element is modulation, the trick that makes sounds live and breathe in an organic sort of way. Despite the contouring applied to the VCFs and VCAs, there is no movement within the sound: it still sounds like a 'beep' of some sort. We have discussed waveforms, filters, envelopes, triggering and gating - surely we are now ready to create some killer synth sounds? No? What's missing? With the knowledge we now have, we can select our waveform, modify it using all manner of powerful filters, and apply envelopes to give the result life and dynamics. In the first nine episodes of Synth Secrets, we've covered a lot of ground. ![]() ![]() In this month's instalment of his series on the basics of subtractive synthesis, Gordon Reid considers the magic ingredient that makes all the other elements sound interesting. ![]()
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