Patents by Inventor Kotaro Nakabayashi
Kotaro Nakabayashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11102571Abstract: A speaker position determination system includes a server, wherein the server includes: a processor configured to: acquire a first reproduction sound output from a first speaker and a second reproduction sound output from a second speaker at the same timing as the first reproduction sound, which are picked up by a sound pickup device arranged at a position of a speaker to be determined; calculate a first time lag indicating a time lag from an output timing of the first reproduction sound until a pickup timing of the first reproduction sound and a second time lag indicating a time lag from an output timing of the second reproduction sound until a pickup timing of the second reproduction sound; and determine the position of the speaker based on the first time lag and the second time lag.Type: GrantFiled: July 3, 2019Date of Patent: August 24, 2021Assignee: Yamaha CorporationInventors: Atsushi Usui, Kotaro Nakabayashi
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Patent number: 10848888Abstract: An audio data processing device according to an aspect of the present disclosure includes: a sound field effect data generator configured to add sound field effect data to audio data by arithmetic operation processing using a parameter, at least one processor, and at least one memory device that stores a plurality of instructions, which when executed by the at least one processor, causes the at least one processor to operate to: analyze a scene for the audio data, recognize switching of the scene based on an analysis result of the scene, gradually decrease both an input gain and an output gain of the sound field effect data generator, and gradually increase both the input gain and the output gain after changing the parameter.Type: GrantFiled: December 27, 2018Date of Patent: November 24, 2020Assignee: YAMAHA CORPORATIONInventors: Morishige Fujisawa, Kotaro Nakabayashi, Yuta Yuyama
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Patent number: 10555083Abstract: An acoustic device includes: at least one processor, and at least one memory device that stores a plurality of instructions, which when executed by the at least one processor, causes the at least one processor to operate to: acquire data on a mixed sound of a reproduction sound of a first sound data output from a first speaker and a reproduction sound of a second sound data output from a second speaker, the mixed sound being picked up by a sound pickup device directed toward the first speaker, calculate a first similarity degree indicating similarity between the data on the mixed sound and the first sound data and a second similarity degree indicating similarity between the data on the mixed sound and the second sound data, and determine connection states of the first speaker and the second speaker based on the first similarity degree and the second similarity degree.Type: GrantFiled: March 6, 2019Date of Patent: February 4, 2020Assignee: YAMAHA CORPORATIONInventors: Atsushi Usui, Kenji Kawano, Kotaro Nakabayashi, Ryota Sato, Kohei Sekiguchi, Masaya Kano
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Publication number: 20200015002Abstract: A speaker position determination system includes a server, wherein the server includes: a processor configured to: acquire a first reproduction sound output from a first speaker and a second reproduction sound output from a second speaker at the same timing as the first reproduction sound, which are picked up by a sound pickup device arranged at a position of a speaker to be determined; calculate a first time lag indicating a time lag from an output timing of the first reproduction sound until a pickup timing of the first reproduction sound and a second time lag indicating a time lag from an output timing of the second reproduction sound until a pickup timing of the second reproduction sound; and determine the position of the speaker based on the first time lag and the second time lag.Type: ApplicationFiled: July 3, 2019Publication date: January 9, 2020Inventors: Atsushi USUI, Kotaro NAKABAYASHI
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Publication number: 20190281388Abstract: An acoustic device includes: at least one processor, and at least one memory device that stores a plurality of instructions, which when executed by the at least one processor, causes the at least one processor to operate to: acquire data on a mixed sound of a reproduction sound of a first sound data output from a first speaker and a reproduction sound of a second sound data output from a second speaker, the mixed sound being picked up by a sound pickup device directed toward the first speaker, calculate a first similarity degree indicating similarity between the data on the mixed sound and the first sound data and a second similarity degree indicating similarity between the data on the mixed sound and the second sound data, and determine connection states of the first speaker and the second speaker based on the first similarity degree and the second similarity degree.Type: ApplicationFiled: March 6, 2019Publication date: September 12, 2019Inventors: Atsushi USUI, Kenji KAWANO, Kotaro NAKABAYASHI, Ryota SATO, Kohei SEKIGUCHI, Masaya KANO
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Publication number: 20190200151Abstract: An audio data processing device according to an aspect of the present disclosure includes: a sound field effect data generator configured to add sound field effect data to audio data by arithmetic operation processing using a parameter, at least one processor, and at least one memory device that stores a plurality of instructions, which when executed by the at least one processor, causes the at least one processor to operate to: analyze a scene for the audio data, recognize switching of the scene based on an analysis result of the scene, gradually decrease both an input gain and an output gain of the sound field effect data generator, and gradually increase both the input gain and the output gain after changing the parameter.Type: ApplicationFiled: December 27, 2018Publication date: June 27, 2019Inventors: Morishige FUJISAWA, Kotaro NAKABAYASHI, Yuta YUYAMA
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Patent number: 10165382Abstract: A signal processing device includes a selector configured to select one of a plurality of methods, in accordance with which a signal generation process is performed for generating a transfer signal in which additional information is added to an audio signal; a signal processor configured to execute the signal generation process of adding the additional information to the audio signal in accordance with the method selected by the selector; and a transferrer configured to transfer to a reproduction device the transfer signal generated by the signal processor.Type: GrantFiled: March 26, 2018Date of Patent: December 25, 2018Assignee: YAMAHA CORPORATIONInventors: Ryotaro Aoki, Atsushi Usui, Masaya Kano, Kotaro Nakabayashi, Yuta Yuyama
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Publication number: 20180220249Abstract: A signal processing device includes a selector configured to select one of a plurality of methods, in accordance with which a signal generation process is performed for generating a transfer signal in which additional information is added to an audio signal; a signal processor configured to execute the signal generation process of adding the additional information to the audio signal in accordance with the method selected by the selector; and a transferrer configured to transfer to a reproduction device the transfer signal generated by the signal processor.Type: ApplicationFiled: March 26, 2018Publication date: August 2, 2018Inventors: Ryotaro AOKI, Atsushi USUI, Masaya KANO, Kotaro NAKABAYASHI, Yuta YUYAMA
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Publication number: 20150264502Abstract: An audio signal processing device includes a calculator for generating a plurality of audio signals to be given respectively to a plurality of loudspeakers based on an audio signal corresponding to a virtual sound source having position information. The calculator calculates, with respect to each loudspeaker, a distance between each of the plurality of loudspeakers and the virtual sound source on the basis of position information indicating a position of the virtual sound source and loudspeaker position information indicating positions of the plurality of loudspeakers, and calculates an audio signal corresponding to the virtual sound source to be supplied to each of the plurality of loudspeakers on the basis of the distance.Type: ApplicationFiled: November 15, 2013Publication date: September 17, 2015Inventors: Ryotaro Aoki, Akihiko Suyama, Kotaro Nakabayashi
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Patent number: 9099963Abstract: An amplifier device includes a plurality of input terminals for receiving input signals (e.g. audio signals), a main switch, which switches over the input terminals so as to select one input terminal, an analyzer, which analyzes the input signals at respective timings so as to determine whether or not each of the input signals corresponds to a playback signal, a storage for storing a plurality of determination results in connection with the input terminals, a controller for controlling the main switch to select the input terminal whose input signal is newly determined as the playback signal, and an amplifier for amplifying the input signal of the selected input terminal. The analyzer performs frequency analysis on the input signals so as to determine the input signal including a specific frequency component having a high intensity as noise not forming the playback signal.Type: GrantFiled: June 28, 2012Date of Patent: August 4, 2015Assignee: Yamaha CorporationInventor: Kotaro Nakabayashi
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Patent number: 8515263Abstract: A contents reproduction apparatus (e.g. an AV receiver) is connectable to various sources (e.g. audio/video devices) having audio/video contents which are related to predetermined activities (e.g. Listen, Watch, Play) and predetermined sound field options (e.g. Music, Movie, Entertainment) via a sound field table describing a plurality of sound field modes. The contents reproduction apparatus allows the user to arbitrarily select the source, the activity, and the sound field option, thus determining a desired sound field mode via the sound field table. The desired sound field mode is adopted in the signal processing performed on the output signals (e.g. audio signals) of the selected source. Thus, the user is able to select the optimum sound field mode from among various sound field modes with a simple operation without needing to carry out troublesome and complicated operations.Type: GrantFiled: May 24, 2010Date of Patent: August 20, 2013Assignee: Yamaha CorporationInventor: Kotaro Nakabayashi
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Publication number: 20120275759Abstract: An amplifier device includes a plurality of input terminals for receiving input signals (e.g. audio signals), a main switch, which switches over the input terminals so as to select one input terminal, an analyzer, which analyzes the input signals at respective timings so as to determine whether or not each of the input signals corresponds to a playback signal, a storage for storing a plurality of determination results in connection with the input terminals, a controller for controlling the main switch to select the input terminal whose input signal is newly determined as the playback signal, and an amplifier for amplifying the input signal of the selected input terminal. The analyzer performs frequency analysis on the input signals so as to determine the input signal including a specific frequency component having a high intensity as noise not forming the playback signal.Type: ApplicationFiled: June 28, 2012Publication date: November 1, 2012Applicant: Yamaha CorporationInventor: Kotaro Nakabayashi
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Patent number: 8243948Abstract: An amplifier device includes a plurality of input terminals for receiving input signals (e.g. audio signals), a main switch, which switches over the input terminals so as to select one input terminal, an analyzer, which analyzes the input signals at respective timings so as to determine whether or not each of the input signals corresponds to a playback signal, a storage for storing a plurality of determination results in connection with the input terminals, a controller for controlling the main switch to select the input terminal whose input signal is newly determined as the playback signal, and an amplifier for amplifying the input signal of the selected input terminal. The analyzer performs frequency analysis on the input signals so as to determine the input signal including a specific frequency component having a high intensity as noise not forming the playback signal.Type: GrantFiled: April 30, 2008Date of Patent: August 14, 2012Assignee: Yamaha CorporationInventor: Kotaro Nakabayashi
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Publication number: 20100303451Abstract: A contents reproduction apparatus (e.g. an AV receiver) is connectable to various sources (e.g. audio/video devices) having audio/video contents which are related to predetermined activities (e.g. Listen, Watch, Play) and predetermined sound field options (e.g. Music, Movie, Entertainment) via a sound field table describing a plurality of sound field modes. The contents reproduction apparatus allows the user to arbitrarily select the source, the activity, and the sound field option, thus determining a desired sound field mode via the sound field table. The desired sound field mode is adopted in the signal processing performed on the output signals (e.g. audio signals) of the selected source. Thus, the user is able to select the optimum sound field mode from among various sound field modes with a simple operation without needing to carry out troublesome and complicated operations.Type: ApplicationFiled: May 24, 2010Publication date: December 2, 2010Applicant: Yamaha CorporationInventor: Kotaro NAKABAYASHI
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Publication number: 20080273710Abstract: An amplifier device includes a plurality of input terminals for receiving input signals (e.g. audio signals), a main switch, which switches over the input terminals so as to select one input terminal, an analyzer, which analyzes the input signals at respective timings so as to determine whether or not each of the input signals corresponds to a playback signal, a storage for storing a plurality of determination results in connection with the input terminals, a controller for controlling the main switch to select the input terminal whose input signal is newly determined as the playback signal, and an amplifier for amplifying the input signal of the selected input terminal. The analyzer performs frequency analysis on the input signals so as to determine the input signal including a specific frequency component having a high intensity as noise not forming the playback signal.Type: ApplicationFiled: April 30, 2008Publication date: November 6, 2008Applicant: Yamaha CorporationInventor: Kotaro NAKABAYASHI