#Audulus waveform meters Patch
#Audulus waveform meters full

It’s fascinating how much one can get out of such a simple patch, especially when bringing the waveshaping into play. My first tryout is the basic setup with two oscillators and two delays. I remembered that Robert Syrett had put together a VCS3 inspired oscillator a while back and thought that I’d use that as a point of departure.

#Audulus waveform meters Patch

I thought it would be fun to go back to the beginning and make an Audulus patch of the Putney-Revox setup that initially got Rob Hordijk going with his Blippoo/ Benjolin/ Rungler circuits. The next step is to implement the sample and hold. I can imagine it being well worthwhile putting together a standalone version of it for use in other contexts.Ī standalone Audulus (µ)module would require a little more thought into how the controls are linked up and presented – for the moment I’ve simply kept everything loosely connected since I’m still in a process of learning and discovering how the different parts affect the whole.

The filter adds a lot of character to the chaotic core of the Blippoo, and its ingenious (again cross-modulating) design makes it a lot of fun to play with. Once again I found it very useful to take a look at James Cigler’s demo and overview of the Epoch Modular TwinPeak (despite its somewhat shaky start). I made a little more progress on my Audulus Blippoo today, with a pulse-width signal generated from a comparator between the two oscillators and, perhaps most importantly, a form of Twinpeak filter. In the Blippoo context the S&H definitely seems to add to the chaotic character of the patch rather than simply adding an extra FM modulation band when the modulating oscillator is higher in frequency. Using a S&H provided him with a useful device for effectively modulating low frequency periods such as envelopes, for example. I take it that including it had something to do with his observation that frequency modulation has a stronger effect when the modulating signal is lower in frequency than the one it is modulating. Hordijk’s inclusion of a S&H in the design is interesting since the Rungler modulations already have something of a S&H character. I also managed to implement a sample & hold in the Blippoo patch. In essence, since a filter is a feedback system, the moment you apply non-linear feedback, the system automatically becomes potentially chaotic. 1 I’d noticed something like this in James Cigler’s TwinPeak demo yesterday, and had some fun trying it out myself with the filters in my Audulus Blippoo patch. One detail that I found very interesting was his demonstration of the patterns that can appear within a chaotic signal – the bifurcations or period doublings that can create harmonic partials that are lower in frequency than the signal fed into the filter. “A chaotic signal is not a random signal.” I got round to taking a look at Rob Hordijk’s recent Rungler Demo at Modular Meets Leeds 2017, a nice complement to the Mallorca demonstration from 2012. The soft sync effects described at around 8 minutes in the Mallorca Rungler video also seem to work. That waveform provides the basis for his fluctuation modulation, which I’d looked at a while ago, and following that start I made some small changes to STS’ Rungler which hopefully bring the fluctuation waveforms closer to Hordijk’s design.

In his masterclass on Waveshaping and Fluctuation, Hordijk covers the waveforms of the Rungler VCO A – explaining the algorithm behind creating it’s ‘sine’ – or rather ‘parabol’ – waveform. I dove into exploring it alongside some videos of Hordijk himself demonstrating the module, as well as a little detective work concerning details that have fascinated me for some time.

#Audulus waveform meters full

Stschoen has been as productive as ever, this time with an Audulus version of the full modular system version of the Rob Hordijk’s Rungler.