Modular Diary

My next stop while working my way though the treasure trove that is the NOVARS collection of Hordijk tutorials, has been his Harmonic Oscillator – a module I’ve been keen to take a closer look at for quite some time.

In the first of two videos he provides a general introduction to the basic idea of the oscillator – one in which the three classic parameters of sound synthesis: pitch, timbre, and amplitude, are all present, and all available for voltage control.

In the second video he takes a closer look at the algorithm that defines the oscillator: a sine/cosine oscillator that feeds back on itself via linear FM, creating a spectrum that contains all harmonics. A second spectrum containing only odd harmonics is created with a Chebyshev polynomial feeding back the pitch an octave higher. The combination of the two spectra creates pulse-width timbres.

Modular Diary: My next stop while working my way though the treasure trove that is the @novars_research collection of Hordijk tutorials, has been his Harmonic Oscillator – a module I’ve been keen to take a closer look at for… rdgr.me/u/76ak0h

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Rudiger Meyer is a composer interested in the play between traditional concert music and new media.


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