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公开(公告)号：US12170884B2
公开(公告)日：2024-12-17
申请号：US17859430
申请日：2022-07-07
Applicant: JVCKENWOOD Corporation
Inventor： Yumi Fujii , Hisako Murata , Takahiro Gejo , Kuniaki Takachi
Abstract: A processing device according to an embodiment includes: a frequency characteristics acquisition unit configured to acquire frequency characteristics of at least one sound pickup signal; a smoothing processing unit configured to perform smoothing processing so as to generate second spectral data smoother than first spectral data based on the frequency characteristics; a first compression unit configured to calculate a first difference value corresponding to a difference between the second spectral data and the first spectral data in a first band, and to compress the second spectral data based on the first difference value; and a filter generation unit configured to generate a filter, based on the second spectral data.
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公开(公告)号：US11937072B2
公开(公告)日：2024-03-19
申请号：US17672604
申请日：2022-02-15
Applicant: JVCKENWOOD Corporation
Inventor： Hisako Murata , Yumi Fujii , Toshiaki Nagai
CPC classification number: H04S7/304 , H04R1/1008
Abstract: An out-of-head localization filter determination system according to an embodiment includes headphones, a microphone unit, a measurement processor, and a server device. The measurement processor measures first ear canal transfer characteristics from a first position to a microphone, measures ear canal transfer characteristics from a second position to a microphone, and transmits user data related to the first ear canal transfer characteristics to the server device. The server device includes a storage unit that stores first preset data and a second preset data in association with each other, a comparison unit that compares the second preset data with the user data, and an extraction unit that extracts the first preset data according to a comparison result.
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公开(公告)号：US11503406B2
公开(公告)日：2022-11-15
申请号：US17378590
申请日：2021-07-16
Applicant: JVCKENWOOD Corporation
Inventor： Yumi Fujii , Hisako Murata , Kuniaki Takachi , Takahiro Gejo , Mayo Iiyama
Abstract: A processor, an out-of-head localization filter generation method, and a program capable of performing appropriate processing are provided. An out-of-head localization filter determination device according to this embodiment includes a built-in microphone embedded in an output unit, a measurement unit configured to output a measurement signal to the output unit and measure a sound pickup signal output from the built-in microphone, a frequency characteristics acquisition unit configured to convert the sound pickup signal into a frequency domain and acquire first frequency characteristics, a conversion unit configured to convert the first frequency characteristics into second frequency characteristics by applying a representative conversion function to the first frequency characteristics, and an inverse filter calculation unit configured to calculate an inverse filter based on the second frequency characteristics.
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公开(公告)号：US11115743B2
公开(公告)日：2021-09-07
申请号：US16816765
申请日：2020-03-12
Applicant: JVCKENWOOD CORPORATION
Inventor： Yumi Fujii , Takahiro Gejo , Hisako Murata , Masaya Konishi , Kuniaki Takachi
Abstract: A signal processing device according to an embodiment includes a measurement signal generation unit that generates a first measurement signal and outputs the signal to headphones, a sound pickup signal acquisition unit that acquires a first sound pickup signal obtained by picking up the first measurement signal by a microphone, a signal analysis unit that calculates a frequency response of the first sound pickup signal, a fit determination unit that determine a fit of the headphones by comparing a response value of the frequency response in a specified frequency band with a reference value, and a display unit that outputs gradual results of the determination in accordance with a percentage of the response value with respect to the reference value.
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公开(公告)号：US11044571B2
公开(公告)日：2021-06-22
申请号：US16817257
申请日：2020-03-12
Applicant: JVCKENWOOD CORPORATION
Inventor： Kuniaki Takachi , Hisako Murata , Yumi Fujii , Takahiro Gejo , Masaya Konishi
Abstract: A filter determination system, a filter determination device, a filter determination method and a program with which a filter can be appropriately determined are provided.
A processing device according to this embodiment includes a frequency response acquisition unit that acquires a frequency response of a filter for an audio signal, a smoothing unit that smoothes the frequency response and obtains a smoothed response, a candidate point determination unit that determines candidate split points based on a bottom position of the smoothed response, and a split point determination unit that determines one or more band split points from the candidate split points.-
Patent Agency Ranking
公开(公告)号：US11039251B2
公开(公告)日：2021-06-15
申请号：US16816852
申请日：2020-03-12
Applicant: JVCKENWOOD CORPORATION
Inventor： Takahiro Gejo , Hisako Murata , Yumi Fujii , Masaya Konishi , Kuniaki Takachi
Abstract: A signal processing device of an embodiment includes a measurement signal generation unit that generates a measurement signal to be output from the sound source, a sound pickup signal acquisition unit that acquires sound pickup signals picked up by a plurality of microphones, a sound source information acquisition unit that acquires sound source information about a horizontal angle of a sound source, filters that have a passband set based on the sound source information and output a filter passing signal in response to input of the sound pickup signals, a phase difference detection unit that detects a phase difference between two sound pickup signals based on the filter passing signal, and a determination unit that determines a result of measurement of the sound pickup signals by comparing the phase difference with an effective range set based on the sound source information.
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公开(公告)号：US12192742B2
公开(公告)日：2025-01-07
申请号：US17939883
申请日：2022-09-07
Applicant: JVCKENWOOD Corporation
Inventor： Hisako Murata , Takahiro Gejo , Yumi Fujii , Masaya Konishi
Abstract: An object of the present disclosure is to provide a filter generation device and a filter generation method, capable of generating a filter suitable for out-of-head localization processing. A processing device according to an embodiment includes: a frequency characteristics acquisition unit configured to acquire frequency characteristics based on sound pickup signals; a level calculation unit configured to calculate a reference level in the frequency characteristics; a correction unit configured to correct the frequency characteristics so that the frequency characteristics fall within a predetermined level range including the reference level, and thereby calculate corrected characteristics; and a filter generation unit configured to generate a corrected filter based on the corrected characteristics.
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公开(公告)号：US11438721B2
公开(公告)日：2022-09-06
申请号：US17200708
申请日：2021-03-12
Applicant: JVCKENWOOD Corporation
Inventor： Hisako Murata , Masaya Konishi , Yumi Fujii , Takahiro Gejo , Kuniaki Takachi , Toshiaki Nagai
Abstract: To provide an out-of-head localization system, a filter generation device, a method, and a program capable of appropriate processing, an out-of-head localization system according to this embodiment includes a measurement device that measures transfer characteristics by using a microphone worn on a user's ear before the user U sits on a seat, an out-of-head localization device that is installed in the seat and performs out-of-head localization by using a filter appropriate to the transfer characteristics, and a server terminal that transmits the filter appropriate to the transfer characteristics to the out-of-head localization device on the basis of identification information of the user U.
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公开(公告)号：US11228837B2
公开(公告)日：2022-01-18
申请号：US17192188
申请日：2021-03-04
Applicant: JVCKENWOOD Corporation
Inventor： Kuniaki Takachi , Hisako Murata , Masaya Konishi , Takahiro Gejo , Yumi Fujii , Toshiaki Nagai
Abstract: Provided are an out-of-head localization system, a filter generation device, a method, and a program capable of appropriate processing. A processing device according to an embodiment includes a frequency information acquisition unit that acquires frequency information on the basis of a frequency response of a filter used in filter processing on a reproduction signal, a time information acquisition unit that acquires, on the basis of the frequency information, time information of a reproduction signal, a time signal extraction unit that extracts, on the basis of the time information, a time signal corresponding to at least some time of the reproduction signal, a filter processing unit that performs filter processing on the time signal, and a gain acquisition unit that acquires a gain on the basis of the time signal not having undergone filter processing and a processed time signal having undergone filter processing.
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公开(公告)号：US10798517B2
公开(公告)日：2020-10-06
申请号：US16675052
申请日：2019-11-05
Applicant: JVCKENWOOD Corporation
Inventor： Hisako Murata , Masaya Konishi , Takahiro Gejo , Kuniaki Takachi , Yumi Fujii , Takayuki Uchida
Abstract: An out-of-head localization filter determination system according to an embodiment includes headphones, a microphone unit, an out-of-head localization device, and a server device. The out-of-head localization device transmits user data based on measurement data to the server. The server device includes a data storage unit configured to store a plurality of first and second preset data acquired for a plurality of persons being measured, a comparison unit configured to compare the user data with the plurality of second preset data, and an extraction unit configured to extract first preset data from the plurality of first preset data based on a comparison result.
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