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公开(公告)号：US10362396B2
公开(公告)日：2019-07-23
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
IPC: H04R3/00 , H04R3/04 , H04R3/14 , H04S1/00 , H04S3/00 , H04S5/02 , H03H17/00 , H03H17/02 , H03H17/08
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：US10354675B2
公开(公告)日：2019-07-16
申请号：US15322194
申请日：2015-06-22
Applicant: Clarion Co., Ltd.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe , Yasuhiro Fujita , Kazutomo Fukue , Takatomi Kumagai
IPC: G10L21/0332 , G10L21/0232 , G10L21/0388
Abstract: There is provided a signal processing device, comprising: a frequency detecting means that detects a frequency satisfying a predetermined condition from an audio signal; an offset means that gives an offset to the detected frequency by the frequency detecting means in accordance with a frequency property at the detected frequency or around the detected frequency; a reference signal generating means that generates a reference signal by extracting a signal from the audio signal based on the detected frequency offset by the offset means; an interpolation signal generating means that generates an interpolation signal based on the generated reference signal; and a signal synthesizing means that performs high band interpolation by synthesizing the generated interpolation signal and the audio signal.
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公开(公告)号：US09866960B2
公开(公告)日：2018-01-09
申请号：US15129827
申请日：2015-02-20
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe , Yasuhiro Fujita , Kazutomo Fukue
CPC classification number: H04R3/04 , B06B1/0238 , B06B2201/52 , B06B2201/70 , H04R1/00 , H04R1/025 , H04R3/00 , H04R5/023 , H04R29/001 , H04R2201/028 , H04R2499/13
Abstract: The present invention provides a vibration audio system for transmitting an audio signal outputted from a sound source to a listener in the form of vibration while reducing output level of the signal and power consumption. The system includes an envelope detection unit (204) for detecting an envelope signal of the audio signal outputted from a sound source, a vibration transmission member for allowing the listener to perceive vibration of a low-frequency sound outputted from a low-frequency output speaker that outputs audio signals, and a frequency conversion unit (205) for generating an audio signal frequency-converted on the basis of resonant frequencies by multiplying the envelope signal by sine waves having the same frequencies as resonance frequencies obtained from an impulse response of the low-frequency output speaker disposed in the vibration transmission member. The audio signal frequency-converted by the frequency conversion unit (205) is outputted from the low-frequency output speaker.
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公开(公告)号：US10375500B2
公开(公告)日：2019-08-06
申请号：US14901165
申请日：2014-06-19
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe , Yasuhiro Fujita , Kazutomo Fukue
Abstract: A propagation delay tune correction apparatus comprising a means for generating a frequency spectrum signal by performing short-term Fourier transform on an audio signal; a means for setting a propagation delay time for each of a plurality of predetermined frequency bands; a means for calculating a phase control amount for each of the plurality of predetermined frequency bands on a basis of the propagation delay time set for each of the plurality of predetermined frequency bands; a means for generating a phase control signal by smoothing the calculated phase control amount for each of the plurality of predetermined frequency bands; a means for controlling a phase of the frequency spectrum signal for each of the plurality of predetermined frequency bands on a basis of the generated phase control signal; and a means for generating an audio signal on which a propagation delay correction is performed by performing inverse short-term Fourier transform on the frequency spectrum signal of which the phase is controlled for each of the plurality of predetermined frequency bands.
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公开(公告)号：US10046773B2
公开(公告)日：2018-08-14
申请号：US15736760
申请日：2016-06-28
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Kenji Kono , Tetsuo Watanabe , Yasuhiro Fujita
CPC classification number: B60W50/14 , B06B3/00 , B60N2/90 , B60R11/02 , B60R16/02 , B60T2201/08 , B60W50/16 , G08B6/00 , G08G1/16 , H04R1/025 , H04R1/028 , H04R3/12 , H04R5/023 , H04R2400/03 , H04R2499/13
Abstract: A notification device (1) includes a sweep signal generator (3) that generates a sweep signal by changing the frequency of a predetermined wave at a constant speed in a frequency band which allows exciters (EX1, EX2, EX3, EX4) to generate a vibration, a sweep signal divider (4) that divides the sweep signal into a higher-band sweep signal in a higher-frequency band including an overlap frequency band and a lower-band sweep signal in a lower-frequency band including the overlap frequency band, a signal output determination unit (2) that determines from which exciters the higher-band sweep signal and lower-band sweep signal should be outputted, and an output signal adjuster (9) that makes an adjustment for outputting the higher-band sweep signal and lower-band sweep signal from the exciters determined.
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Patent Agency Ranking
公开(公告)号：US09883303B2
公开(公告)日：2018-01-30
申请号：US14916567
申请日：2014-09-19
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Kazutomo Fukue , Tetsuo Watanabe , Yasuhiro Fujita
CPC classification number: H04R29/001 , G01H3/125 , G10L21/14 , G10L21/18 , H04R29/008 , H04S1/00 , H04S2400/15
Abstract: A sound field measuring device (1) obtains frequency characteristics by collecting output sound outputted from a pair of speakers (101a, 101b) installed at a narrow interval. A low-pass filter (22a) extracts low-range components of a first measurement signal. A high-pass filter (22b) extracts mid/high-range components of a second measurement signal different from the first measurement signal. A combined signal generation unit (22c) generates a combined signal by combining the low-range components of the first measurement signal and the mid/high-range components of the second measurement signal. An external output unit (6) outputs the first measurement signal to an audio system (102). A microphone (7) collects the first measurement signal and the combined signal simultaneously outputted from the pair of speakers. A Fourier transform unit (13) obtains the frequency characteristics of a sound field by Fourier transforming the signals collected.
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公开(公告)号：US09280986B2
公开(公告)日：2016-03-08
申请号：US14381989
申请日：2013-01-23
Applicant: CLARION CO., LTD.
Inventor： Takeshi Hashimoto , Tetsuo Watanabe
IPC: H04B3/20 , G10L21/057 , H04R3/04 , G10K11/175 , G10L21/02 , G10H1/02 , G10H1/00 , G10L21/0364 , G10L19/025
CPC classification number: G10L21/057 , G10H1/0091 , G10H1/02 , G10H2210/281 , G10K11/175 , G10L19/025 , G10L21/02 , G10L21/0364 , H04R3/04 , H04R2227/007
Abstract: Provided is an acoustic signal processing device for producing an output sound meeting listener's preferences by adjusting attack sound, reverberation, and noise component. The device includes: an FFT section for transforming an input audio signal from a time-domain to a frequency-domain to calculate a frequency spectrum signal and for generating a first amplitude spectrum signal and a phase spectrum signal; an attack component controller (10) for controlling an attack component of the first amplitude spectrum signal to generate a second amplitude spectrum signal; a reverberation component controller (20) for controlling a reverberation component of the first amplitude spectrum signal to generate a third amplitude spectrum signal; a first adding section (40) for synthesizing the first amplitude spectrum signal, the second amplitude spectrum signal, and the third amplitude spectrum signal to generate a fourth amplitude spectrum signal; and an IFFT section for generating an audio signal transformed from a frequency domain to a time domain based on the fourth amplitude spectrum signal and the phase spectrum signal generated by the FFT section.
Abstract translation: 提供一种声音信号处理装置，用于通过调整攻击声，混响和噪声分量来产生会议听众的喜好的输出声音。 该装置包括：FFT部分，用于将输入音频信号从时域变换到频域，以计算频谱信号，并产生第一振幅谱信号和相位谱信号; 攻击部件控制器（10），用于控制第一幅度频谱信号的攻击分量以产生第二幅度频谱信号; 混响分量控制器（20），用于控制第一幅度频谱信号的混响分量以产生第三幅度频谱信号; 用于合成第一幅度频谱信号的第一加法部分（40），第二幅度频谱信号和第三幅度频谱信号以产生第四幅度频谱信号; 以及IFFT部分，用于基于由FFT部分生成的第四幅度频谱信号和相位频谱信号，生成从频域变换到时域的音频信号。
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公开(公告)号：US10396745B2
公开(公告)日：2019-08-27
申请号：US16091513
申请日：2017-03-29
Applicant: CLARION CO., LTD.
Inventor： Tetsuo Watanabe , Takeshi Hashimoto
Abstract: An audio processor (1) includes a first filter coefficient calculator (31) that calculates a first filter coefficient so as to correspond to first gains for respective bands set by a user, a second filter coefficient calculator (32) that if values of third gains for respective bands of the first filter coefficient are greater than an absolute value of a second gain set by the user, calculates a second filter coefficient by limiting the values of the third gains for the respective bands to the amplitude value of the second gain, and a filtering unit (35) that filters an audio signal that has been transformed into a frequency-domain signal, using the second filter coefficient.
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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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10.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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