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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
发明人： Yumi Fujii , Hisako Murata , Masaya Konishi , Takahiro Gejo , Kuniaki Takachi
摘要： 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
发明人： Hiroshi Uchida , Hisako Murata , Takahiro Gejo , Yumi Fujii , Kuniaki Takachi , Masaya Konishi , Takayuki Uchida , Satoshi Yoshimura , Shuji Tanifuji
摘要： 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
发明人： Takahiro Gejo , Hisako Murata , Masaya Konishi , Yumi Fujii , Kuniaki Takachi , Toshiaki Nagai
CPC分类号： H04S1/005 , H04R5/02 , H04R5/04 , H04S2400/01 , H04S2420/01
摘要： 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：US20230114777A1
公开(公告)日：2023-04-13
申请号：US17939883
申请日：2022-09-07
发明人： Hisako MURATA , Takahiro Gejo , Yumi Fujii , Masaya Konishi
摘要： 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：US10805727B2
公开(公告)日：2020-10-13
申请号：US16549928
申请日：2019-08-23
发明人： Hisako Murata , Takahiro Gejo , Yumi Fujii , Kuniaki Takachi , Masaya Konishi
摘要： 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：US11438721B2
公开(公告)日：2022-09-06
申请号：US17200708
申请日：2021-03-12
发明人： Hisako Murata , Masaya Konishi , Yumi Fujii , Takahiro Gejo , Kuniaki Takachi , Toshiaki Nagai
摘要： 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
发明人： Kuniaki Takachi , Hisako Murata , Masaya Konishi , Takahiro Gejo , Yumi Fujii , Toshiaki Nagai
摘要： 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
发明人： Hisako Murata , Masaya Konishi , Takahiro Gejo , Kuniaki Takachi , Yumi Fujii , Takayuki Uchida
摘要： 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：US11115743B2
公开(公告)日：2021-09-07
申请号：US16816765
申请日：2020-03-12
发明人： Yumi Fujii , Takahiro Gejo , Hisako Murata , Masaya Konishi , Kuniaki Takachi
摘要： 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
发明人： Kuniaki Takachi , Hisako Murata , Yumi Fujii , Takahiro Gejo , Masaya Konishi
摘要： 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.
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