Music instrument with converter to give electronic signal from mechanical process

摘要

The sensors (1,2) respond to the activation signal resulting with the deflection of the sound flaps (2). The activating element (1.1) on the side of the sound flap away from the lever (2.1) and the sensor held by a sensor carrier (2.1), are arranged lying opposite in the region of the opening (3.1) in a closed condition. The activating element is a permanent magnet and the sensor is an element responding to the magnetic field. The sensor can be a Hall sensor or a Reed contact. The activating element has a light screening element and the sensor a light barrier, and the light screening element interrupts the light of the light barrier in the closed condition of the sound flap.