Modular Diary – 096

Following on yesterday’s thoughts on which models to use when introducing small pitch fluctuations with digital oscillators, I tried substituting the S&H in Mark Boyd’s Drifting Gateable Quantizer with his 1D Chaos module. I find the pitch fluctuations quite satisfying and more subtle than simply providing a micro-offset with a sample and hold value. Perhaps a little closer to the fluctuations one might find with a wind player than the slow drift of an analogue oscillator.

I’ve also been wondering about the stretching at the high and low extremes that occurs with analogue oscillators or when tuning a piano, for example. In the case of piano tuning that stretching makes sense in relation to equal temperament and the slightly inharmonic overtone structure of piano tones. With the relatively ‘pure’ starting point that is possible with digital oscillators, as well as the myriad of waveshaping and filtering possibilities that may follow, that kind of stretching doesn’t makes sense – unless one is deliberately setting out to imitate that kind of behaviour. There’s also the changing sensitivity of our ears at different parts of the frequency spectrum, but perhaps with digital oscillators a single kind of slightly chaotic fluctuation across the entire spectrum is the way to go.

Modular Diary – 096: Following on yesterday’s thoughts on which models to use when introducing small pitch fluctuations with digital oscillators, I tried substituting the S&H in Mark Boyd’s Drifting Gateable Quantizer with his 1D Chaos module… rdgr.me/u/rv9sdc

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


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