A smart musical instrument system may include a musical instrument, a first sensor, a second sensor, a processor device, and a reminder device. The first sensor may be configured to obtain first performance data reflecting operations of the musical instrument. The may be second sensor configured to receive second performance data associated with hand posture of a user of the smart instrument system. The processor device may be in communication with the first sensor and the second sensor, and may be configured to generate feedback based on at least one of the first performance data or the second performance data. The reminder device may be configured to deliver the feedback to the user.

A system 100, for determining the velocity of a hammer 120 of a keyboard instrument, with a light transceiver 140 and processing circuitry 160. The light transceiver 140 being configured to transmit a light signal to a hammer 120 to measure a hammer velocity, receive a reflected light signal from the hammer 120 indicative of the velocity of the hammer 120 and send an electrical signal to the processing circuitry 160, where the electrical signal is based on the reflected light signal from the hammer 120. The processing circuitry 160 being configured to receive and process the electrical signal so that a time interval between the electrical signal passing through a first trigger point and a second trigger point and the velocity of the hammer 120 can be determined.

Systems and methods for providing a piano system are provided. In some embodiments, the methods include receiving a plurality of key signals related to a first performance of a piece of music, wherein each of the plurality of key signals corresponds to motion of at least one key of a piano during the first performance; generating first performance information based on the plurality of key signals; receiving musical data related to a second performance of the piece of music; receiving musical data related to a second performance of the piece of music, generating second performance information based on the musical data; and providing content for presentation on a display device based on the first performance information and the second performance information. The methods can also include receiving at least one pedal signal corresponding to motion of a pedal of the piano during the first performance, and generating first performance information based on the pedal signal.

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 pSWl, 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 keyboard apparatus includes a plurality of keys each rotatable with a predetermined stroke, a support assembly which includes a support with one side rotatably arranged with a support rail and a jack with the one side rotatably supported by the support, and rotates with depression of any of the plurality of keys, a hammer unit which is operated by receiving an action of the jack, a shank rail which rotatably supports the hammer unit, and a jack stopper which makes contact with the jack which rotates with the depression of any of the plurality of keys, the jack stopper being placed on a rotation path of the jack and provided to a fixing portion which does not rotate with the depression any of the plurality of keys.

A support assembly according to one embodiment of the present invention is provided, the support assembly including a jack rotatably supported by a support; a repetition lever rotatably supported with respect to the support; a protrusion disposed at an intersecting portion of the jack and the repetition lever; and a protrusion receiving portion for receiving the protrusion; wherein the protrusion receiving portion defines a movable range of the protrusion and limits a rotation range of the jack.

A system 100, for determining the velocity of a hammer 120 of a keyboard instrument, with a light transceiver 140 and processing circuitry 160. The light transceiver 140 being configured to transmit a light signal to a hammer 120 to measure a hammer velocity, receive a reflected light signal from the hammer 120 indicative of the velocity of the hammer 120 and send an electrical signal to the processing circuitry 160, where the electrical signal is based on the reflected light signal from the hammer 120. The processing circuitry 160 being configured to receive and process the electrical signal so that a time interval between the electrical signal passing through a first trigger point and a second trigger point and the velocity of the hammer 120 can be determined.

An electronic keyboard musical instrument with a plurality of keys is provided. The electronic keyboard musical instrument comprises a detection sensor configured to detect a gentle key press to an adjacent position that is shallower than and adjacent to a resonant performance position; a computer configured to, when the detection sensor detects a gentle key press to the adjacent position of at least one first key, execute a resonance permission process to give a permission to output a resonant tone of the at least one first key; and a tone emission device configured to, when at least one second key different from the at least one first key and having a resonant relationship with the at least one first key is regularly pressed, emit a regular tone of the at least one second key and the resonant tone of the at least one first key.

A system 100, for determining the velocity of a hammer 120 of a keyboard instrument, with a light transceiver 140 and processing circuitry 160. The light transceiver 140 being configured to transmit a light signal to a hammer 120 to measure a hammer velocity, receive a reflected light signal from the hammer 120 indicative of the velocity of the hammer 120 and send an electrical signal to the processing circuitry 160, where the electrical signal is based on the reflected light signal from the hammer 120. The processing circuitry 160 being configured to receive and process the electrical signal so that a time interval between the electrical signal passing through a first trigger point and a second trigger point and the velocity of the hammer 120 can be determined.

A system, for determining the velocity of a hammer of a keyboard instrument, with a light transceiver and processing circuitry. The light transceiver being configured to transmit a light signal to a hammer to measure a hammer velocity, receive a reflected light signal from the hammer indicative of the velocity of the hammer and send an electrical signal to the processing circuitry, where the electrical signal is based on the reflected light signal from the hammer. The processing circuitry being configured to receive and process the electrical signal so that a time interval between the electrical signal passing through a first trigger point and a second trigger point and the velocity of the hammer can be determined.