Patent ID: 9721553
Date: 2017-08-01
CPC Classifications: G01L,G10H

Claim:
1. A percussion device, comprising: a dielectric substrate having an array of conductive traces formed on a first surface of the dielectric substrate; a piezoresistive substrate aligned with the dielectric substrate and in contact with the first surface of the dielectric substrate and the conductive traces, wherein the conductive traces and the piezoresistive substrate form a plurality of sensor regions of the percussion device, each of the sensor regions including a plurality of sensors, each of the sensors having a corresponding sensor output; and sensor circuitry configured to sequentially drive the sensors, to sequentially sample the sensor outputs, and to detect hit events on a top surface of the percussion device, the sensor circuitry being configured to determine, for each hit event, one of the sensor regions corresponding to the hit event, a location of the hit event relative to the array, and a velocity of the hit event, the sensor circuitry also being configured to repeatedly calculate an offset value for each sensor during operation of the percussion device.