Learn Synthesis with Pure Data S01E10 - Frequency Modulation

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United States The Wayfarer Project
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Frequency modulation is one of the fundamental concepts in synthesis. When modulating the frequency of a sound producing oscillator at lower rates, one hears the bending up and down of pitch that we call vibrato. When the rate at which this modulation is sped up, crossing somewhere between 20 Hz - 40 Hz, the effect changes into one in which we hear side bands, or other frequencies of tonal quality that add to the complexity of the frequency spectrum of the sound. FM synthesis is the use of a frequency modulating oscillator to create side bands, shape their parameters over time, and mix them together to complete more complex sounds. In this episode, we will add an FM module to our synthesis to explore the basics of frequency modulation for vibrato and basic spectrum coloration.

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Wayfarer
The Wayfarer Project
Lawrence W. Moore
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pd
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FM synthesis
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vibrato
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