Exertion instruments

Abstract

This dissertation describes the research, development and reasoning behind a family of musical instruments called Exertion Instruments. They use inline electrical generators to run a synthesizer and an amplifier while eliminating the need for batteries. Efficient acoustic design minimizes the power requirements while optimized generator and ergonomic design maximize power generation. As such, they combine the convenience of acoustic instruments with the flexibility of electronic instruments. Also, through new generator designs, nuances of player charging movements become as important to expression as the overall intensity of their playing. The player treats the generator like a typical physical resonator such as a string, using musical instrument playing gestures. Yet they manipulate audio electronically, enabling practices like sampling, synthesis and modulation. During development, a modular approach using amateur-friendly materials was taken to empower future instrument builders to customize and improve the instrument. In addition to technical criteria based on measurements, Exertion Instruments are evaluated through player and builder experiences in a series of technical workshops and realworld performances.