Computer Musician, Programmer, Hardware Hacker

Here’s a performance of ‘patch[042012]‘ for custom electronics and laptop, performed as part of the California Electronic Music Exchange Concert series (CEMEC). This event took place at California Institute of the Arts on April 28, 2012 in the Roy O. Disney Concert Hall.

Here are two new tabulaRasa demos:

From Clarke Robinson (who designed the panel in the video), using a set of vocal waveforms, no effects:

From Greg Davis, using tables composed of mixed harmonically-related sinusoids, through a filter, and a delay:

Some rehearsal sketches for an upcoming performance. I’m using my custom modular system with a mixing/delay Max patch, routed through the pucktronix.snake.corral. There’s also a grid button and fader controller in there. Here’s the setup, minus the midi controller:

This is a revamped interface screenshot for the snake.corral.

Download the beta.

from the readme file:

pucktronix.snake.corral

readme.txt
last modified 02.26.2012

software, text, and images copyright 2012
greg surges
surgesg@gmail.com

http://www.gregsurges.com/

pucktronix.snake.corral is a computer-controlled dual 8 x 8 analog signal routing matrix.
Two independent matrices are presented, each with 8 inputs and 8 outputs. Within each matrix,
any input (or summed combination of inputs) can be routed to any output. The device can switch
and route any type of analog signal within the range of +/- 5V. The main electronic components
of the pucktronix.snake.corral are a Teensy 2.0 and a pair of Zarlink MT8816 analog switching
matrix ICs. The MT8816 is a bidirectional 8 x 16 matrix with minimal signal bleed.
Like the USB-Octomod, the pucktronix.snake.corral is powered from the USB bus.

A Max/MSP patch which allows the user to define and switch between presets and/or
apply various algorithmic rhythmic effects to the switching matrices has also been developed.

Using the pucktronix.snake.corral, a modest number of synthesis modules can be used
to create interesting rhythmic and timbral variety. The ability to rapidly switch or
reconfigure a large number of signal connections enables a level of rhythmic complexity
which is difficult to obtain through other means. Sharp cuts between disparate types
of musical material are made possible, and patches can be stored and quickly recalled.

The software is available in two forms, a Max 6 collective which can be run using the free
Max 6 runtime software available from cycling74.com, and a standalone application. Currently,
the standalone is OS X only, but hopefully a volunteer can help compile it for Windows.

On loading the software, the user is presented with two sets of matrix controls and a set of
serial port controls. The first thing to do is to select the serial port which the snake.corral
device is plugged into, and then click the “open serial” button.

Matrix connections can be made by clicking cells on the large matrices. If desired, a configuration
can be saved as a preset by shift-clicking one of the preset slot circles to the right of each matrix.A preset can be recalled by clicking a circle.

Below the preset selection buttons are a pair of buttons, one for clearing the matrix, and one for
setting up a random automation configuration. The two number boxes below select low and high range
limits for the automation timing.

Finally, to the far right of each matrix is a rhythmic automation interface. By selecting one of the
tabs labeled “sinusoid”, “periodic”, “random”, or “pucklet”, the user can then toggle a given
cell to toggle itself on/off with the corresponding rhythmic type. The number box below selects a
relevant time value for each automation type.

Please contact me with suggestions or questions.

Some images of the new Eurorack panels for the tabulaRasa. There’s a thread on these here, and I will have more info when mine arrive in the mail this week.