Cartesian CV Sequencer with Intentional Interface: Difference between revisions

Cartesian CV Sequencer with Intentional Interface (view source)

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Jo El

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 I have to say, that it was quite hard for me to come up with an idea for the creative, musical use of this technique. As i dont wanted to implement this algorithm for the classic purpose of sound detection issues, i came up with a more abstract idea of use.
+IDEA
 My idea was a intention based gesture/timbre detection through the piezo microphone input. This input is expressed through Midi Notes and muscial scales. For example the aggresive touch on the interface surface should express in a, somehow, corresponding sequence of notes (or melody).
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 So the project i came up with is basically a sequencer.
-In thinking about what kind of sequencer i wanted to build, i was very inspired by the sequencer eurorack-module by "Make Noise", which is called "Rene´ ". It's a sequencer based on motion inside a cartesian coordinate system. What i found interesting in this is the fact that this way of sequencing dont have one main tempo which is driving the sequences, but instead more tempos (depending on the amount of dimensions). Each tempo or clock is driving the sequences only on one axis. That means when clocks (or gates) of different speeds (or ryhtms) are fed into the sequencer, the outcoming sequence can be very diverse. With an normal( 1-dimensional) sequencer, such or similiar results from only one sequence would need modulation of pitch values or radomnization in the rhythm patterns.
+In thought about what kind of sequencer i wanted to build, i was very inspired by the eurorack-sequencer by "Make Noise", called "Rene´ ". It's a sequencer based on motion inside a cartesian coordinate system. What i found interesting in this, is the fact that this way of sequencing doesn't work with one main tempo which is driving the sequences, but instead with more tempos (depending on the amount of dimensions). Each tempo or clock is driving the sequences only on one axis. That means when clocks (or gates) of different speeds (or ryhtms) are fed into the sequencer, the outcoming sequence can be very diverse. With an normal( 1-dimensional) sequencer, such or similiar results from only one sequence would need modulation of pitch values or radomnization in the rhythm patterns.
 So i decided to design my own little grid-based sequencer. Im calling it grid-based because it only has 2 dimensions. My plan was to build it in a hardware format, with analog parts. That means i didn't wanted to build a Midi-Sequencer but instead a digital CV/Gate-sequencer for analog gear. For the UI Part i was inspired by the Teensy-based, opensource eurorack module "Ornament & Crime" by Patrick Dowling (aka pld), Max Stadler (aka mxmxmx) and Tim Churches (aka bennelong.bicyclist). This one is known for its many functions and flexibility. But the whole UI is based on an OLED Display, two rotary encoders and 2 buttons. I planned to do it similliar. That means also an OLED display and 2 rotary encoders but only one button. Concercing Analog In and Outputs i build two audio inputs for the 2 clocks or gates that drive the X-Axis and the Y-Axis. On the output side i integrated two outputs (0-4 Volts = Range of 4 Octaves) with external 12 Bit DAC Boards to get a proper resolution, voltage range and precision. One outputs the CV signal, the other one the Gate signals.