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公开(公告)号：US10008997B2
公开(公告)日：2018-06-26
申请号：US15545725
申请日：2016-02-24
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe , Yasuhiro Fujita , Kazutomo Fukue , Takatomi Kumagai , Hideyuki Morita
CPC classification number: H03G5/165 , G06F17/156 , H03G5/005 , H03G5/025 , H03H17/0213 , H03H17/06
Abstract: A filter generator (100) generates a filter on the basis of band information (frequency) and gain characteristics (gain value) set by a user. The filter generator (100) obtains weighting factor information on the basis of the band information selected by the user and calculates a gain difference between a gain value used in a preceding filtering process and the new gain value selected by the user. The filter generator (100) then obtains a correction gain by multiplying the weighting factor information by the gain difference and generates a filter by multiplying a coefficient of the filter used in the preceding filtering process by the correction gain.
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2.发明申请公开(公告)号：US20180070177A1
公开(公告)日：2018-03-08
申请号：US15551752
申请日：2016-02-16
Applicant: Clarion Co., Ltd.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe , Hideyuki Morita , Takatomi Kumagai , Yasuhiro Fujita , Kazutomo Fukue
CPC classification number: H04R3/14 , H03H17/0009 , H03H17/0213 , H03H17/08 , H04R3/00 , H04R3/04 , H04R2499/13 , H04S1/00 , H04S3/002 , H04S5/02 , H04S2420/07
Abstract: A phase control signal generation device generating a phase control signal for each of frequency bands for an audio signal converted into a frequency domain, the phase control signal generation device comprising: a setting change means that is able to change setting of a propagation delay time for each of predetermined frequency bands; a difference obtaining means that obtains a difference between propagation delay times before and after setting change; an updating means that updates a phase control amount of the frequency band for which the propagation delay time is changed, based on the obtained difference; and a phase control signal generating means that generates a phase control signal of each frequency band by performing a smoothing process for the phase control amount in a frequency domain using the updated phase control amount.
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公开(公告)号：US09693171B2
公开(公告)日：2017-06-27
申请号：US15026252
申请日：2014-09-22
Applicant: CLARION CO., LTD.
Inventor： Kazutomo Fukue , Takeshi Hashimoto , Tetsuo Watanabe , Yasuhiro Fujita
CPC classification number: H04S7/307 , H04R3/04 , H04R29/008 , H04S7/301 , H04S2400/09 , H04S2400/13 , H04S2400/15 , H04S2420/07
Abstract: A sound field measuring device (1) includes an external output unit (6) configured to output a measurement signal composed of a periodic function having a code length of 2n−1 (n is a natural number) to a speaker (9), a microphone (7) configured to pick up the measurement signal outputted from the speaker (9), a Fourier transform unit (12) configured to obtain frequency characteristics by Fourier transforming measurement sound picked up with a sample length of 2m (m is a natural number), a thinning-out unit (13) configured to remove line spectra except for the (k×2m-n+1)th line spectra (k=0, 1, 2, and the like) from the obtained frequency characteristics, and an averaging unit (14) configured to obtain averaged frequency characteristics of a sound field on the basis of frequency characteristics thinned-out.
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公开(公告)号：US11066083B2
公开(公告)日：2021-07-20
申请号：US16634881
申请日：2018-08-02
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Yasuhiro Fujita
Abstract: To allow an alarm vibration generated by a vibration generator to be recognized by a user through a vibration transmission member. A vehicle alarm device (100) includes a vibration generator (30) configured to generate an alarm vibration having a frequency corresponding to a frequency of a received alarm signal, a vibration transmission member (90) configured to transmit the alarm vibration to a user, a travel situation information acquisition unit (70) configured to acquire travel situation information in accordance with a travel situation of the vehicle, and an alarm signal generator (70) configured to generate the alarm signal such that when the value of the acquired travel situation information is high, a signal to be inputted to the vibration generator (30) includes at least a high-band frequency and such that when the value of the travel situation information is low, the signal to be inputted to the vibration generator (30) includes at least a low-band frequency.
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公开(公告)号：US10179592B2
公开(公告)日：2019-01-15
申请号：US15778224
申请日：2016-11-02
Applicant: CLARION CO., LTD.
Inventor： Yasuhiro Fujita , Takeshi Hashimoto , Kenji Kono
Abstract: To make a notification to the driver so that the driver can distinguish or recognize the notification. A vehicle notification device (1a) inputs a first sweep signal whose frequency is changed in a predetermined frequency range, to a vibrator (4), calculates frequency characteristics of a vibration in the vehicle interior, detects a frequency range in which the signal level of vehicle-travel-time frequency characteristics is higher than the signal level of vehicle-stop-time frequency characteristics by a predetermined level amount or more, generates a second sweep signal whose frequency is changed in a range obtained by excluding the detected frequency range from the predetermined frequency range of the first sweep signal, and outputs the second sweep signal from the vibrator (4).
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Patent Agency Ranking
6.发明授权公开(公告)号：US10270412B2
公开(公告)日：2019-04-23
申请号：US15549541
申请日：2016-02-12
Applicant: Clarion Co., Ltd.
Inventor： Kazutomo Fukue , Takeshi Hashimoto , Tetsuo Watanabe , Takatomi Kumagai , Yasuhiro Fujita
Abstract: A sound-field correction device, comprising: a target calculating unit, a correction amplitude characteristic calculating unit and a setting unit. The target calculating unit calculates, based on a predetermined sound signal, a target amplitude characteristic targeted for sound-field correction by a parametric equalizer and a plurality of auxiliary target amplitude characteristics having amplitude characteristics approximately equal to or gentler than the target amplitude characteristic. The correction amplitude characteristic calculating unit calculates a correction amplitude characteristic for correction sound-field based on the calculated target amplitude characteristic and the calculated plurality of auxiliary target amplitude characteristics. The setting unit sets the parametric equalizer based on the calculated correction amplitude characteristic.
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公开(公告)号：US10147434B2
公开(公告)日：2018-12-04
申请号：US14894579
申请日：2014-05-26
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe , Yasuhiro Fujita , Kazutomo Fukue
IPC: G10L19/02 , G10L19/032 , G10L21/0388 , G10L25/18
Abstract: A signal processing device comprises: a band detecting means for detecting a frequency band which satisfies a predetermined condition from an audio signal; a reference signal generating means for generating a reference signal in accordance with a detection band by the band detecting means; a reference signal correcting means for correcting the generated reference signal on the basis of a frequency characteristic thereof; a frequency band extending means for extending the corrected reference signal up to a frequency band higher than the detection band; an interpolation signal generating means for generating an interpolation signal by weighting each frequency component within the extended frequency band in accordance with a frequency characteristic of the audio signal; and a signal synthesizing means for synthesizing the generated interpolation signal with the audio signal.
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公开(公告)号：US09986352B2
公开(公告)日：2018-05-29
申请号：US15118930
申请日：2015-02-04
Applicant: Clarion Co., Ltd.
Inventor： Yasuhiro Fujita , Takeshi Hashimoto , Tetsuo Watanabe , Kazutomo Fukue
CPC classification number: H04R29/001 , H04R3/007 , H04R3/04 , H04R2227/007 , H04R2499/13
Abstract: An acoustic processing device comprises: a resonant band detecting means that detects a resonant band of sound output from a speaker based on a measurement result of a predetermined measurement signal reproduced through the speaker; an analyzing means that analyzes the measurement result of the predetermined measurement signal; a control parameter generating means that generates a control parameter for controlling the resonant band detected by the resonant band detecting means based on an analysis result by the analyzing means; and an audio signal controlling means that controls an audio signal input from a predetermined audio signal reproducing device based on the control parameter generated by the control parameter generating means such that a resonant band component of reproduced sound of the audio signal is suppressed to be short on a time axis.
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9.发明申请公开(公告)号：US20180034434A1
公开(公告)日：2018-02-01
申请号：US15549541
申请日：2016-02-12
Applicant: Clarion Co., Ltd.
Inventor： Kazutomo Fukue , Takeshi Hashimoto , Tetsuo Watanabe , Takatomi Kumagai , Yasuhiro Fujita
IPC: H03G5/16
CPC classification number: H03G5/165 , G10K15/00 , H03G5/16 , H04R2499/13 , H04S7/301 , H04S7/302 , H04S7/307
Abstract: A sound-field correction device, comprising: a target calculating means that calculates, based on a predetermined sound signal, a target amplitude characteristic targeted for sound-field correction by a parametric equalizer and a plurality of auxiliary target amplitude characteristics having amplitude characteristics approximately equal to or gentler than the target amplitude characteristic; a correction amplitude characteristic calculating means that calculates a correction amplitude characteristic for correcting sound-filed based on the calculated target amplitude characteristic and the plurality of auxiliary target amplitude characteristics; and a setting means that sets the parametric equalizer based on the calculated correction amplitude characteristic.
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公开(公告)号：US11265651B2
公开(公告)日：2022-03-01
申请号：US16892285
申请日：2020-06-04
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Yasuhiro Fujita
IPC: H04R3/04
Abstract: A frequency compressor of a vibration output apparatus generates a compressed signal by converting frequency components of a mid-band signal into low-band frequency components of a low-band signal by increasing the total number of samples by a factor of n and thus compressing the frequency of amplitude information included in mid-band frequency components of the mid-band signal to 1/n. If the level of a low-band envelope signal is lower than a predetermined threshold level, a vibration signal generator generates a vibration signal by combining the compressed signal with the low-band signal consisting of the low-band frequency components of an acoustic signal. If the level of the low-band envelope signal is higher than the predetermined threshold level, the vibration signal generator generates a vibration signal by directly using the low-band signal. A vibration output unit outputs a vibration on the basis of the generated vibration signal.
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