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公开(公告)号：US10805727B2
公开(公告)日：2020-10-13
申请号：US16549928
申请日：2019-08-23
Applicant: JVCKENWOOD Corporation
Inventor： Hisako Murata , Takahiro Gejo , Yumi Fujii , Kuniaki Takachi , Masaya Konishi
Abstract: A processor of a filter generation device according to an embodiment includes an extraction unit that extracts a first signal having a first number of samples from samples preceding a boundary sample of a sound pickup signal, a signal generation unit that generates a second signal containing a direct sound from a sound source and having a second number of samples larger than the first number of samples based on the first signal, a transform unit that transforms the second signal into a frequency domain and generates a spectrum, a correction unit that increases a value of the spectrum in a correction band and generates a corrected spectrum, an inverse transform unit that inversely transforms the corrected spectrum into a time domain and generates a corrected signal, and a generation unit that generates a filter based on the sound pickup signal and the corrected signal.
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公开(公告)号：US11297427B2
公开(公告)日：2022-04-05
申请号：US17016674
申请日：2020-09-10
Applicant: JVCKENWOOD CORPORATION
Inventor： Yumi Fujii , Hisako Murata , Masaya Konishi , Takahiro Gejo , Kuniaki Takachi
Abstract: A processing device according to an embodiment includes a sound pickup signal acquisition unit that acquires sound pickup signals picked up by left and right microphones through a monophonic input terminal, a switch unit that switches a connection state so that a first sound pickup signal picked up only by the left microphone and a second sound pickup signal picked up only by the right microphone are input, an interaural distance acquisition unit that acquires an interaural distance of the listener, a front time difference acquisition unit that acquires a front time difference, an incident time difference calculation unit that calculates an incident time difference based on an angle θ, the front time difference, and the interaural distance, and a transfer characteristics generation unit that calculates transfer characteristics by applying a delay corresponding to the incident time difference to the first and second sound pickup signals.
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公开(公告)号：US11051118B2
公开(公告)日：2021-06-29
申请号：US16538601
申请日：2019-08-12
Applicant: JVCKENWOOD Corporation
Inventor： Hiroshi Uchida , Hisako Murata , Takahiro Gejo , Yumi Fujii , Kuniaki Takachi , Masaya Konishi , Takayuki Uchida , Satoshi Yoshimura , Shuji Tanifuji
Abstract: A sound pickup device according to this embodiment includes a microphone part placed at a sound pickup position in close proximity to an ear hole without blocking an ear canal, and positioned so as to face outside of the ear canal, and a wire having flexibility and extending to the sound pickup position. Further, in this embodiment, at least part of the wire is formed along an auricle.
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公开(公告)号：US11997468B2
公开(公告)日：2024-05-28
申请号：US17400672
申请日：2021-08-12
Applicant: JVCKENWOOD Corporation
Inventor： Takahiro Gejo , Hisako Murata , Masaya Konishi , Yumi Fujii , Kuniaki Takachi , Toshiaki Nagai
CPC classification number: H04S1/005 , H04R5/02 , H04R5/04 , H04S2400/01 , H04S2420/01
Abstract: An object of the present invention is to provide a processing device, a processing method, a reproducing method, and a program capable of performing appropriate processing.
A processing device according to the present embodiment includes: an envelope computation unit computing an envelope for a frequency response of a sound pickup signal; a scale conversion unit generating scale converted data by performing scale conversion and data interpolation on frequency data of the envelope; a normalization factor computation unit dividing the scale converted data into a plurality of frequency bands, obtaining a characteristic value for each frequency band, and computing a normalization factor, based on the characteristic values; and a normalization unit, using the normalization factor, normalizing the sound pickup signal in the time domain.-
公开(公告)号：US11470422B2
公开(公告)日：2022-10-11
申请号：US17372365
申请日：2021-07-09
Applicant: JVCKENWOOD Corporation
Inventor： Yumi Fujii , Hisako Murata , Kuniaki Takachi , Takahiro Gejo , Mayo Iiyama
Abstract: An out-of-head localization filter determination system according to this embodiment includes a microphone unit that is worn on a user's ear and picks up sounds output from an output unit, a measurement unit that measures a sound pickup signal output from the microphone unit, a data storage unit that stores first preset data related to spatial acoustic transfer characteristics and second preset data related to ear canal transfer characteristics in association with each other, a frequency characteristics acquisition unit that converts the sound pickup signal into a frequency domain and acquires frequency characteristics, an extreme value extraction unit that extracts a local maximum value and a local minimum value of the frequency characteristics, and an envelope calculation unit that calculates first envelope data and second envelope data by interpolating each of the local maximum value and the local minimum value.
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Patent Agency Ranking
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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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：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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