See this discussion thread on MW. A user posted an idea called a Q-Relative cell, by which he meant relative to a Quantussy cell. While it is not a Quantussy cell, it has in common with it the idea of a cell that can be multiplied and cross-patched.
The basic idea is to use a clocked sample and hold with a random noise input to generate a random CV to be applied to the pitch of a VCO and optionally to the clock rate and to the rise and fall rate of an envelope follower. Key ideas:
- The changes are random, based on sampling noise.
- A square wave into a slew limiter become a trapezoidal envelope generator.
Here is my patch diagram. (Sorry about the quality.) It shows four similar structures, top to bottom. Each is made up of the following:
- A Tromsø module with LFO, Comparator, and Sample & Hold
- A clock divider/multiplier from the 4ms QCD
- A quantizer from the Disting
- A VCO , either a Klavis Twin Waves, Sync Iter, or E950
- A VC slew, either a Mini Slew or half of a Sport Modulator
Ultra Random Analog generates two noise sources. These are tweaked for level and color and then routed into the sample and holds. Each noise source drives two sample & holds.
Each clock of the LFO triggers a new sample of the noise, and also drives a clock divider. The sample is quantized and routed to the 1V/octave input of a VCO. The divider output (conveniently a +5V square wave) is sent to a slew limiter to generate an trapezoidal envelope for controlling the signal level of the oscillator output in the output mix. It’s a basic note generator.
The fun experiment was to have the S&H output also routed to control the slew rate of the following section and the LFO rate of the previous section, in a cycle of four.
Manual settings include LFO initial rate, LFO CV depth, Oscillator initial frequency, initial slew rate. Here’s an example of one result. The oscillators were tuned by ear.