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Feedback Improvisations

by Dimitri Georgaras

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1.
August 30th 13:11
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2.
August 14th 12:04
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3.
August 9th 10:50
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4.
August 10th 10:21
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5.
July 27th 17:48
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about

The series of feedback improvisations based upon David Tudor's 'Untitled' were recorded as part of my summer research project titled 'Taming the Ghost in the Machine' which explored the history and practice of electronic feedback as a compositional technique.

Composer and performer David Tudor produced electronic feedback works throughout his career, however he is likely best known for his piece 'Untitled'. Tudor would create large feedback networks by connecting chains of electronic devices such as amplifiers, phase shifters, filters, and modulators, and feeding them back to their inputs. These devices are traditionally used to modify a sound, yet when arrange in a feedback loop, produce complex oscillations and sonically unique events.

While researching Tudor’s feedback works, original schematics were uncovered for specific devices used in Untitled and other feedback pieces. These schematics were prototyped and then modified to add more control and options to the circuitry. The original Tudor circuitry built for this project, along with various other circuitry of original design, was constructed using some original components previously owned by Tudor, supplied by Dr. Matt Rogalsky.

The collection of prototyped circuits designed and built for the realization of 'Untitled' were integrated and mounted onto a metal face plate, facilitating the interconnection of circuits through patch cables. The collection of fifteen circuits includes: High and Low-Pass filters; Diode Ring Modulators; Four-Quadrant Multiplier, Variable Frequency Divider, Voltage Controlled Amplifiers; and, Amplitude Modulators.

The original score for Untitled was used as a guideline to configure device interconnections and signal paths for the feedback network. A series of five improvisations were recorded, each with different device configurations.

credits

released September 9, 2018

Performed and Recorded by Dimitri Georgaras at the Queens Sonic Arts Studio in the summer of 2018

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all rights reserved

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Dimitri Georgaras Ottawa, Ontario

Ottawa-born composer, sound artist, and instrument builder. Dimitri's compositional voice is informed by deconstructing the fundamentals, limitations, and chaotic behaviours of analog electronics and digital signal processing, creatively exposing their musical potential through composition and performance. ... more

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