A sound control device includes: a detection unit that detects a first operation on an operator and a second operation on the operator, the second operation being performed after the first operation; and a control unit that causes output of a second sound to be started, in response to the second operation being detected. The control unit causes output of a first sound to be started before causing the output of the second sound to be started, in response to the first operation being detected.

In a key switch (10), an inner dome (Din) starts to deform once a distal end portion (21) of the inner dome (Din) comes into contact with a base surface (93a) after an outer dome (Dout) starts to deform. A thick portion (25) extending straight and having a uniform wall thickness in a click generating portion (CL) has the thickness less than or equal to the minimum thickness of a thick portion (23) of an after stroke portion (AF). The degree of inclination of the thick portion (25) with respect to a center line (C0) (direction of pressing) is larger than that of the thick portion (23) with respect to the center line (C0) (c>a). Before the after stroke portion (AF) undergoes large deformation, the click generating portion (CL) undergoes buckling to cause a sudden decrease in a reaction force and generate a click feeling.

An operation state detecting apparatus includes the following. An electronic device includes an operation surface and can detect whether there is contact in a plurality of positions. A sheet material can be attached to and detached from the operation surface. The sheet material includes a projecting portion which deforms to change a contact state on the operation surface according to strength of external force. A processor of the electronic device detects whether there is contact in a plurality of positions in an individual detecting region on the operation surface on which a contact state changes by the projecting portion deforming in a state with the sheet material attached to the operation surface. The processor performs a specific process according to strength or speed of an operation applied to the projecting portion judged based on a detected result of whether contact is detected in the plurality of positions.

A keyboard apparatus includes a key, a frame, a flexible section configured to rotate the key with respect to the frame, the flexible section having a longitudinal direction, and including a region where a length of the flexible section in a first direction continuously increases toward a first end and a second end of the flexible section in a cross section perpendicular to the longitudinal direction of the flexible section, and a first supporting section supporting side closer to the first end than the region, the first supporting section including a bonding section bonded to the first end, the bonding section including a first section and a second section, the first section and the second section keeping continuity with the flexible section, and a recessed section being arranged at a position, in a scale direction and sandwiched between the first section and the second section, of the bonding section.

A sound signal generation method for a keyboard including a pedal and a key, the method according to an embodiment of the present disclosure comprises generating a first sound signal and a second sound signal different from the first sound signal based on first operation data corresponding to an operation of the key, and adjusting a relationship between the first sound signal and the second sound signal to sound at respective timings according to a physical quantity of a key pressing operation of the key to control a decay rate of the first sound signal to be different from a decay rate of the second sound signal based on a key release operation of the key.

A first contact and a second contact are provided at each of a plurality of keys, and are successively closed in accordance with a key press operation. On the basis of respective closed sense signals from the first contact and the second contact, a duration from when the first contact is closed until the second contact is closed is counted as a first count value and then a duration after this counting has ended is counted as a second count value. An attainment duration value and the second count value are compared, and when a predetermined condition is satisfied, a control signal is outputted. When this control signal is received, sound emission information instructing an emission of a sound by a sound emission controller is sent. The sound emission information includes touch information based on the first count value.

An operation state detecting apparatus includes the following. An electronic device includes an operation surface and can detect whether there is contact in a plurality of positions. A sheet material can be attached to and detached from the operation surface. The sheet material includes a projecting portion which deforms to change a contact state on the operation surface according to strength of external force. A processor of the electronic device detects whether there is contact in a plurality of positions in an individual detecting region on the operation surface on which a contact state changes by the projecting portion deforming in a state with the sheet material attached to the operation surface. The processor performs a specific process according to strength or speed of an operation applied to the projecting portion judged based on a detected result of whether contact is detected in the plurality of positions.

A keyboard musical instrument is provided in which variations in the detection mechanism is corrected so that an appropriate musical sound control can be performed. Detection sections SW1, SW2, and SW3 detect an object at detection positions pSW1, pSW2, and pSW3. On the basis of a detection timing (rT2) by the detection section SW2, a detected key depression speed (V21), and a detection timing (rT3) by the detection section SW3 in a case where the key is depressed in a derivation mode, after a rST32 value is calculated, a stroke correction value calST32 is derived as correction information J and stored in a memory 57. In the performance mode, the musical sound is controlled on the basis of the detection timing by the detection sections SW1, SW2, and SW3 and the stroke correction value calST32.

A pivot mechanism includes: a shaft portion; a bearing configured to contact the shaft portion at a first contact and a second contact and configured to pivot about a pivot axis relative to the shaft portion; and a supporter secured to the bearing, configured to contact the shaft portion at a third contact, and bendable in a direction different from a direction from the pivot axis toward the third contact.

According to an embodiment of the present invention, a keyboard apparatus includes a key; and a connecting member connecting the key to a frame and including a rod-like flexible member arranged between the frame and the key, the key being turned to the frame by bending of the rod-like flexible member.