Modular Diary – 011

The arpeggiator of the Model 15 App is a step into getting an idea of how early analogue sequencers were set up: A voltage control knob for each step of the pattern. For pitch those voltages would typically be passed through a quantizer before being routed to an oscillator, but they might just as well be used to control velocity or filter cutoff, for example, perhaps with a parallel row for controlling gate times.1 It’s quite a different world from the piano roll visualizations one is accustomed to with DAWs, and encourages a different way of thinking – a different approach to creating and using sequences.

When I first started using Audulus I was somewhat puzzled by some of the sequencer modules included with it. I’ve since come to better understand (and appreciate) the old analogue models on which they are based. The great thing with Audulus is that all knobs can be linked to any other form of control – that means that the knob for each sequence step can potentially be controlled by an LFO or Random generator, to pick two examples. The sequencer can not only send out a set of control signals, but also be modulated itself.


  1. The Korg SQ-10 is a good example. Here’s a video with the SQ-10 controlling the MS-20 filters. 

Modular Diary – 011: The arpeggiator of the Model 15 App is a step into getting an idea of how early analogue seq… https://rudigermeyer.com/notes/2017-08-18-23-42-35

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<a rel="me" class="p-name u-url" href="https://rudigermeyer.com">Rudiger Meyer</a> is a composer interested in the play between traditional concert music and new media.


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