Angle sensor for musical tone control

Abstract

The present invention relates to an angle sensor for musical tone control which controls a musical tone in response to changing angles at an articulation of the human body. Both ends of a pair of plate members are coupled pivotally and movably around an axis parallel to both faces of plate members. This pair of plate members are attached on the interior side of articulation of the human body by attaching means to generate a signal in response to the bending motion of the articulation. Thus, a musical tone control signal in response to the bending angles is outputted from detecting means which is placed on the plate members to control musical tone.

What is claimed is: 
     
       1. An angle sensor for musical tone control comprising: a pair of plate members coupled pivotally and movably around an axis which is parallel to both faces of said plate members;   detecting means for detecting a signal in response to an angle when said pair of plate members pivot in relation to each other around said axis, said detecting means generating a musical tone control signal in response to said signal to control a musical tone;   attaching member for arranging said pair of plate members on the interior side of the bending articulation so that said pair of plate members pivot in relation to each other around said axis in response to the bending motion of articulation.   
     
     
       2. An angle sensor for musical tone control according to claim 1 wherein said detecting means comprises a tubular resistance portion integrally or rigidly formed at one end of said plate members, and a slide contact formed with said axis which is slidably inserted into said tubular resistance portion to change resistance in response to the bending angle of said plate members. 
     
     
       3. An angle sensor for musical tone control according to claim 1 wherein said detecting means comprises a spring and a pressure sensing element urged by said spring, in which one end of said spring is fixed at one plate member and the other end is urged to said pressure sensing element placed on the other plate member to output signals in response to the bending angle of said plate members. 
     
     
       4. An angle sensor for musical tone control according to claim 1 wherein said attaching member comprises a band having a retainer, in which said retainer slidably holds said plate member in the longitudinal direction of said plate members in response to the movement of articulation. .Iadd. 
     
     
       5.  An angle sensor for musical tone control comprising: first member;   second member;   coupling means for coupling the first and second members so that the first and second members are pivotable on the coupling means;   attaching means for securing the first member to one side of an articulation of a performer, and the second member to the other side of the performer's articulation, wherein the surfaces of both sides of the articulation are substantially perpendicular to the pivoting axis of the articulation; and   detecting means for detecting an angle formed between the first and second members on the coupling means and generating a musical tone control signal in response to the detected angle. .Iaddend. .Iadd.6. An angle sensor for musical tone control according to claim 5 wherein the attaching means slidably holds at least one of the first and second members in the longitudinal direction of the first and second members in response to pivoting of the articulation. .Iaddend.