MATRIXSYNTH: Mr Grassi by Ieaskul F. Mobenthey

Saturday, April 18, 2020

Mr Grassi by Ieaskul F. Mobenthey


Published on Apr 18, 2020 CatSynth TV

"We explore Mr. Grassi, a chaotic touchpad module from Ieaskul F. Mobenthey. We start with a simple audio output then use it to drive increasingly complex moular patches.

0:10 Introduction to Mr. Grassi and rungling
0:41 Direct audio output
1:01 Sending rungler audio to the Strymon Magneto
1:35 Moog Mother-32: Modulating the oscillator frequency and triggering the envelope
2:00 Running a rungler through a rotating clock divider (Max/MSP/BEAP)
2:32 Controlling pitch and timbre of the Sputnik Dual Oscillator; triggering the Sinc Bucina LPG
3:11 Adding two channels from Mr. Grassi to control Comb and Time parameters on the Qu-Bit Prism

For more information about Mr. Grassi and other wild instruments from Ieaskul F. Mobenthey and Ciat Lombarde, please visit http://synthmall.com/

"Grassi, a touch-module, contains twelve square waves, used as the clock and data for shift registers, each followed by primitive resistor DAC. The DACs modulate clock and counter-clock wise, yielding closed loops of perpetual modulation, triggered by touch. Each of the six outputs are a single, four-bit DAC. Listening to them raw, they generate modem sounds to pure noise on touch. On release of touch, each DAC holds the contingent position of its DATA. Thus the DATA can be used as CV for up to six other operators, scrambled on touch...

Rungling, a coin of Rob Hordijk, is exactly what Mister Grassi does. He takes two oscillators and mixes them in the shift register chip, treating one as data and the other as clock. The result, a memory heterodyne, feeds back into the oscillators. This circular process traverses both analog and digital, soft tones and square drones."

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