Electronic musical instrument

摘要

An automatic tuning system for pendulum clocks provides for a separable magnet and ferromagnetic attractor, one positioned on the pendulum and one positioned off of the pendulum and adjustable to change the separation between the two. The magnetic attraction between these elements serves to simulate a changing gravitational force fundamentally affecting pendulum period.

主权项

1. A musical instrument comprising:
an electrically insulating housing adapted to be grasped in a human hand and freely moved; a set of conductive touchpads arrayed on an outer surface of the housing to be touched; an accelerometer attached to the housing and providing an electrical signal proportional to acceleration of the housing; and an electronic circuit communicating with the conductive touchpads and the accelerometer to detect touching of a given touchpad and in response to the touching of the given touchpad, outputting an electrical signal identifying a musical note having a pitch determined by an identity of the given touchpad and a volume determined by a signal from the accelerometer at a time contemporaneous with touching of the given touchpad wherein the housing includes at least two perpendicular surfaces and wherein at least some of the conductive touchpads are placed on different of the two perpendicular surfaces; and wherein the accelerometer is a multiaxis accelerometer having sensitivity along normals to the to perpendicular surfaces and wherein the outputting of an electrical signal identifies a volume of the musical note by a signal from the accelerometer corresponding to an axis normal to a one of the two perpendicular surfaces on which the given touchpad is placed.