CTRL: A Flexible, Precision Interface for Analog Synthesis

J Harding, Ricky Graham, Edwin Park

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This paper provides a new interface for the production and distribution of high resolution analog control signals, par- ticularly aimed toward the control of analog modular syn- thesisers. Control Voltage/Gate interfaces generate Control Voltage (CV) and Gate Voltage (Gate) as a means of con- trolling note pitch and length respectively, and have been with us since 1986 [3]. The authors provide a unique custom CV/Gate interface and dedicated communication protocol which leverages standard USB Serial functionality and en- ables connectivity over a plethora of computing systems, including embedded devices such as the Raspberry Pi and ARM based devices including widely available Android TV Boxes.
We provide a general overview of the unique hardware and communication protocol developments followed by use case examples toward tuning and embedded platforms, leverag- ing softwares ranging from Pure Data (Pd), Max, and Max for Live (M4L).
Original languageEnglish
Article number0051
Pages (from-to)234-237
Number of pages4
JournalNIME 2018: Proceedings of the international conference on new interfaces for musical expression
Publication statusPublished (in print/issue) - 3 Jun 2018


  • CTRL
  • CV
  • Control
  • Electronics
  • Analog
  • Synthesis
  • Embedded
  • Communication
  • Protocol


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