US Patent 10566915 Acoustic guitar energy harvester

The present invention is directed to an acoustic resonator within an acoustic chamber such as a stringed instrument body. The acoustic resonator is provided with a piezoelectric material. The kinetic energy derived from the acoustic chamber creates vibrations of sound producing a corresponding or sympathetic mechanical vibration to the piezoelectric material. As a consequence, the piezoelectric material will generate electrical energy which will undergo conditioning by energy harvester electronics. The conditioned electrical energy is used to provide power to multiple devices including on-board electronics or a USB charging port.