# US 11,114,075 B2 · Electronic musical instrument and electronic musical instrument system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,075 B2 - Document ID: US11114075B2 - Status: Granted - Kind: B2 - Application number: 16/456,186 - Filed: 2019-06-28 - Published: 2019-10-17 - Granted: 2021-09-07 - Earliest claimed: 2016-12-29 - Assignees: Yamaha Corporation - Applicants: Yamaha Corporation - Inventors: Shinichi Ohta; Kevin Macmanus - Web page: https://patentgrep.com/patent/US11114075B2 ## CPC - G10H 1/24: for selecting plural preset register stops - G10H 1/34: Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments - G10H 1/00: Details of electrophonic musical instruments - G10H 1/08: by combining tones (G10H1/14, G10H1/16 take precedence; chord G10H1/38) - G10H 1/18: Selecting circuits - G10H 1/183: {Channel-assigning means for polyphonic instruments} - G10H 1/344: {Structural association with individual keys (electrically operated wind-actuated organs G10B3/22)} - G10H 2240/141: Library retrieval matching, i.e. any of the steps of matching an inputted segment or phrase with musical database contents, e.g. query by humming, singing or playing; the steps may include, e.g. musical analysis of the input, musical feature extraction, query formulation, or details of the retrieval process - G10H 2240/145: Sound library, i.e. involving the specific use of a musical database as a sound bank or wavetable; indexing, interfacing, protocols or processing therefor - 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 ## Abstract Provided is an electronic musical instrument. The electronic musical instrument is configured to generate an internal acoustic signal; generate a sound generation instruction signal; output the sound generation instruction signal to an external sound source configured to generate an external acoustic signal; switch a first state in which the external acoustic signal is generated by the external sound source in response to the sound generation instruction signal, to a second state in which the internal acoustic signal is generated in response to the sound generation instruction signal; and, when the first state is switched to the second state, set a mode of the internal acoustic signal such that the internal acoustic signal is generated with a mode having a predetermined degree of similarity to a mode of the external acoustic signal generated in the first state. ## Claims ### Claim 1 An electronic musical instrument comprising: an internal sound source configured to generate an internal acoustic signal; a generation means configured to generate a sound generation instruction signal; an output means connected to an external sound source configured to generate an external acoustic signal, and configured to output the sound generation instruction signal to the external sound source; a switching means configured to switch a first state in which the external acoustic signal is generated by the external sound source in response to the sound generation instruction signal to a second state in which the internal acoustic signal is generated by the internal sound source in response to the sound generation instruction signal; a setting means configured to, when the first state is switched to the second state, set a mode of the internal acoustic signal such that the internal acoustic signal is generated with a mode similar to a mode of the external acoustic signal generated in the first state; an input means configured to receive the external acoustic signal generated by the external sound source as a feedback acoustic signal; and a detection means configured to detect a state of input of the feedback acoustic signal to the input means, wherein the switching means is configured to switch the first state to the second state in response to a transition from a state in which input of the feedback acoustic signal to the input means is normal, to a state in which input of the feedback acoustic signal to the input means is not normal. ### Claim 2 (depends on 1) The electronic musical instrument according to claim 1, wherein the mode of the internal acoustic signal and the external acoustic signal includes a timbre. ### Claim 3 (depends on 2) The electronic musical instrument according to claim 2, wherein the mode of the internal acoustic signal and the external acoustic signal includes an attribute of a timbre. ### Claim 4 (depends on 2) The electronic musical instrument according to claim 2, further comprising an acquisition means configured to acquire correspondence information indicating the mode of the internal acoustic signal that is similar to the mode of the external acoustic signal, wherein when the first state is switched to the second state, the setting means is configured to set the mode of the internal acoustic signal based on the acquired correspondence information. ### Claim 5 (depends on 1) The electronic musical instrument according to claim 1, wherein the mode of the internal acoustic signal and the external acoustic signal includes an attribute of a timbre. ### Claim 6 (depends on 5) The electronic musical instrument according to claim 5, further comprising an acquisition means configured to acquire correspondence information indicating the mode of the internal acoustic signal that is similar to the mode of the external acoustic signal, wherein when the first state is switched to the second state, the setting means is configured to set the mode of the internal acoustic signal based on the acquired correspondence information. ### Claim 7 (depends on 1) The electronic musical instrument according to claim 1, further comprising an acquisition means configured to acquire correspondence information indicating the mode of the internal acoustic signal that is similar to the mode of the external acoustic signal, wherein when the first state is switched to the second state, the setting means is configured to set the mode of the internal acoustic signal based on the acquired correspondence information. ### Claim 8 (depends on 7) The electronic musical instrument according to claim 7, further comprising a selection means configured to select correspondence information corresponding to the external sound source in the first state among a plurality of pieces of the correspondence information prepared in correspondence with a plurality of the external sound sources, wherein the acquisition means is configured to acquire the selected correspondence information. ### Claim 9 (depends on 8) The electronic musical instrument according to claim 8, further comprising an identification means configured to identify the external sound source in the first state, wherein the selection means is configured to select the correspondence information corresponding to the identified external sound source. ### Claim 10 (depends on 9) The electronic musical instrument according to claim 9, further comprising a reception means configured to receive a selection of one of the plurality of pieces of corresponding information, wherein the selection means is configured to select the correspondence information corresponding to the external sound source selected by the reception means. ### Claim 11 (depends on 8) The electronic musical instrument according to claim 8, further comprising a reception means configured to receive a selection of one of the plurality of pieces of corresponding information, wherein the selection means is configured to select the correspondence information corresponding to the external sound source selected by the reception means. ### Claim 12 (depends on 8) The electronic musical instrument according to claim 8, wherein the external sound source has the correspondence information, and the acquisition means is configured to acquire the correspondence information from the external sound source. ### Claim 13 (depends on 7) The electronic musical instrument according to claim 7, wherein the external sound source has the correspondence information, and the acquisition means is configured to acquire the correspondence information from the external sound source. ### Claim 14 (depends on 1) The electronic musical instrument according to claim 1, further comprising a calculation means configured to calculate a degree of similarity between the mode of the external acoustic signal generated by the external sound source and the mode of the internal acoustic signal generated by the internal sound source, wherein when the first state is switched to the second state, the setting means is configured to set the mode of the internal acoustic signal based on the degree of similarity calculated by the calculation means. ### Claim 15 (depends on 1) The electronic musical instrument according to claim 1, wherein the switching means is configured to switch the second state to the first state in response to a transition from a state in which input of the feedback acoustic signal to the input means is not normal, to a state in which input of the feedback acoustic signal to the input means is normal. ### Claim 16 (depends on 1) The electronic musical instrument according to claim 1, wherein the switching means switches the first state to the second state based on a user operation. ### Claim 17 (depends on 1) An electronic musical instrument system comprising: the electronic musical instrument according to claim 1; one or more external sound sources connected to the electronic musical instrument; and a sound generation means configured to generate a sound based on an internal acoustic signal generated by the internal sound source of the electronic musical instrument and an external acoustic signal generated by the one or more external sound sources. ### Claim 18 A method comprising: generating a sound generation instruction signal in an electronic musical instrument including an internal sound source configured to generate an internal acoustic signal; outputting the sound generation instruction signal from the electronic musical instrument to an external sound source configured to generate an external acoustic signal; switching a first state in which the external acoustic signal is generated by the external sound source in response to the sound generation instruction signal to a second state in which the internal acoustic signal is generated by the internal sound source in response to the sound generation instruction signal; and automatically setting a mode of the internal acoustic signal such that the internal acoustic signal is generated with a mode similar to a mode of the external acoustic signal generated in the first state, when the first state is switched to the second state, wherein the electronic musical instrument further includes an input means configured to receive the external acoustic signal generated by the external sound source as a feedback acoustic signal; and a detection means configured to detect a state of input of the feedback acoustic signal to the input means, wherein switching includes detecting a state of input of the feedback acoustic signal to the input means, and switching the first state to the second state in response to a transition from a state in which input of the feedback acoustic signal to the input means is normal, to a state in which input of the feedback acoustic signal to the input means is not normal. ### Claim 19 A non-transitory computer readable medium storing a program for causing a computer to execute: generating a sound generation instruction signal in an electronic musical instrument including an internal sound source for generating an internal acoustic signal; outputting the sound generation instruction signal from the electronic musical instrument to an external sound source configured to generate an external acoustic signal; switching a first state in which the external acoustic signal is generated by the external sound source in response to the sound generation instruction signal to a second state in which the internal acoustic signal is generated by the internal sound source in response to the sound generation instruction signal; and setting a mode of the internal acoustic signal such that the internal acoustic signal is generated with a mode similar to a mode of the external acoustic signal generated in the first state, when the first state is switched to the second state, wherein the electronic musical instrument further includes an input means configured to receive the external acoustic signal generated by the external sound source as a feedback acoustic signal; and a detection means configured to detect a state of input of the feedback acoustic signal to the input means, wherein switching includes detecting a state of input of the feedback acoustic signal to the input means, and switching the first state to the second state in response to a transition from a state in which input of the feedback acoustic signal to the input means is normal, to a state in which input of the feedback acoustic signal to the input means is not normal.