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Hybrid Instruments - Project Files

This repo contains a small sampling of some files used in this Hybrid Instruments research project

File Structure:

board/

  • PiezoPreamp_V3.brd: EAGLE board file for mic pre-amp circuitry
  • PiezoPreamp_V3.sch: EAGLE schematic file for mic pre-amp circuitry
  • PiezoV3brd.png: Picture of the EAGLE board file
  • PiezoV3pcb.jpg: Picture of the assembled PCB circuitry
  • PiezoV3sch.png: Picture of the EAGLE schematic file

img/

  • 3D printed bow.jpg: The 3D printed bow phone attachment used as a sound source
  • 3D printed ektar.jpg: The 3D printed ektar (1 string instrument) phone attachment used as a sound source
  • breadboard.jpg: The breadboard prototype of the mic pre-amp circuitry
  • in-house PCBs.jpg: The copper-etched boards with components soldered used for in-house testing of the mic pre-amp circuitry
  • pcb1.jpg: The first PCB design of the mic pre-amp circuitry
  • pcb2.jpg: The second PCB design of the mic pre-amp circuitry

test-patch/

To measure the success of the mic pre-amp, I made a quick test patch in MobMuPlat and Pure Data to control the gain and listen to the result of the mic pre-amp. This directory contains the two files used for this test.

Gain Potentiometer Graphs.pdf

During the early design process, I began testing the use of different potentiometers and their effectiveness in controlling the mic gain for the pre-amp circuitry. The results of my findings are summarized in this document.