# US 2022/0044664 A1 · Electronic Hi-Hat > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0044664 A1 - Document ID: US20220044664A1 - Status: Published application - Kind: A1 - Application number: 17/509,025 - Filed: 2021-10-24 - Published: 2022-02-10 - Earliest claimed: 2019-05-09 - Assignees: Ef-Note Inc. - Applicants: Ef-Note Inc. - Inventors: Yoshiaki Mori - Web page: https://patentgrep.com/patent/US20220044664A1 ## CPC - G10H 1/0553: {using optical or light-responsive means} - G10D 13/065: Hi-hats - G10D 13/26: {Mechanical details of electronic drums} - G10H 1/0555: {using magnetic or electromagnetic means} - G10H 3/146: {using a membrane, e.g. a drum; Pick-up means for vibrating surfaces, e.g. housing of an instrument} - G10H 1/34: Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments - G10H 2220/411: Light beams - G10H 2220/525: Piezoelectric transducers for vibration sensing or vibration excitation in the audio range; Piezoelectric strain sensing, e.g. as key velocity sensor; Piezoelectric actuators, e.g. key actuation in response to a control voltage - G10H 2230/331: Spint cymbal hihat, e.g. mimicking high-hat cymbal; Details of the pedal interface, of the pedal action emulation or of the generation of the different sounds resulting from this pedal action - G10H: ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE - G10D: STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR (organs, harmoniums or similar wind musical instruments with associated blowing apparatus G10B; pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards G10C; automatic musical instruments G10F; electrophonic musical instruments in which tones are generated by electromechanical means G10H) ## Abstract An electronic hi-hat 1 has a rod movable up and down with an operation of a player. A top cymbal 2 has a striking surface that can be struck by the player. A bottom cymbal 3 comes into contact with or separates from the top cymbal 2. An optical sensor 7 detects separation dimension between the top cymbal 2 and the bottom cymbal 3. The optical sensor 7 detects separation dimensions of a plurality of areas that are displaced with inclinations of the top cymbal 2 and the bottom cymbal 3 with respect to the rod r. The plurality of areas where the separation dimensions are detected are located on a common circumference of the top cymbal 2 and the bottom cymbal 3 around the rod r as a center. ## Claims ### Claim 1 An electronic hi-hat comprising: a rod movable up and down in accordance with an operation of a player; a top cymbal, including a striking surface, that can be struck by the player and movable up and down in accordance with a movement of the rod; a bottom cymbal attached to face the top cymbal, the bottom cymbal capable of coming into contact with or separating from the top cymbal that moves up and down in accordance with the movement of the rod; and a detector means capable of detecting a separation dimension between the top cymbal and the bottom cymbal, the detector detects separation dimensions of a plurality of areas that are displaced with inclinations of the top cymbal and the bottom cymbal with respect to the rod, and the plurality of areas where the separation dimensions are detected are located on a common circumference of the top cymbal and the bottom cymbal around the rod as a center. ### Claim 2 (depends on 1) The electronic hi-hat according to claim 1, wherein the detector detects separation dimensions of areas at at least three or more positions separate at equal intervals on the common circumference of the top cymbal and the bottom cymbal around the rod as the center. ### Claim 3 (depends on 1) The electronic hi-hat according to claim 1, wherein the detector includes a distance sensor disposed in at least one of the top cymbal and the bottom cymbal, and the distance sensor is capable of detecting, in a non-contact manner, the separation dimensions of the plurality of areas that are displaced with the inclinations of the top cymbal and the bottom cymbal with respect to the rod. ### Claim 4 (depends on 3) The electronic hi-hat according to claim 3, wherein the distance sensor includes an optical sensor that can detect the separation dimensions by emitting light and receiving reflected light of the light, and a reflection surface that can reflect the light emitted from the optical sensor is formed on the other one of the top cymbal and the bottom cymbal. ### Claim 5 (depends on 4) The electronic hi-hat according to claim 4, further comprising a light guide portion that widens from a light emission position of the optical sensor toward the reflection surface. ### Claim 6 (depends on 1) The electronic hi-hat according to claim 1, wherein relative angles, dimensions, or a positional relationship of the top cymbal and the bottom cymbal can be calculated based on a plurality of detection values detected by the detector. ### Claim 7 (depends on 1) The electronic hi-hat according to claim 1, wherein the bottom cymbal has a region that is elastically deformable by a pressing force generated when the top cymbal comes into contact with the bottom cymbal. ### Claim 8 (depends on 7) The electronic hi-hat according to claim 7, wherein the region that is elastically deformable includes a notch portion in the bottom cymbal. ### Claim 9 (depends on 1) The electronic hi-hat according to claim 1, wherein the top cymbal includes a pad with the striking surface and a frame that supports the pad, an edge sensor, that can detect a strike by the player, is attached to a peripheral edge portion of the frame, the pad continuously extends from a center toward a peripheral edge portion and the frame continuously extends from a center toward the peripheral edge portion, and the peripheral edge portion of the frame is formed to have a larger inclination angle than an inclination angle of the peripheral edge portion of the pad. ### Claim 10 (depends on 9) The electronic hi-hat according to claim 9, wherein the pad and the frame continuously extend from the respective centers toward the respective peripheral edge portions while having predetermined curvatures, a curvature of the peripheral edge portion of the frame is set to be larger than a curvature of the peripheral edge portion of the pad, and the peripheral edge portion of the frame is formed to have the larger inclination angle than the inclination angle of the peripheral edge portion of the pad.