| I.P Abstract & Summary |
The invention relates to a tonal device for a digital piano, comprising a support forming the key or the bottom of the key, and a base plate positioned opposite the support under the support; such that a first moving element, a second moving element positioned at a predetermined distance from the first moving element and aligned with the first moving element, and a counting moving element positioned at a predetermined distance from the second moving element and aligned with the second moving element are mounted on the bottom of the support; such that a first sensor, a second sensor, and a counting sensor are mounted on the base plate, and grooves are installed in the base plate; such that, when a key is pressed, the counting sensor detects the degree to which the key has been pressed. |
