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公开(公告)号：US20190123704A1
公开(公告)日：2019-04-25
申请号：US16091513
申请日：2017-03-29
Applicant: CLARION CO., LTD.
Inventor： Tetsuo WATANABE , Takeshi HASHIMOTO
CPC classification number: H03G9/02 , H03G5/02 , H03G5/165 , H03G9/00 , H03H17/02 , H03H17/0213 , H04R3/04
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：US20180326902A1
公开(公告)日：2018-11-15
申请号：US15777915
申请日：2016-10-24
Applicant: CLARION CO., LTD.
Inventor： Takeshi HASHIMOTO , Kenji KONO , Yasuhiro FUJITA
Abstract: To allow the driver to identify a notification vibration even in a situation in which the notification vibration may be masked depending on the road conditions. A vehicle notification device (1) randomly extract one of a plurality of pieces of signal data by the number of vibrators (exciters EX1 to EX4), each of the pieces of signal data being different in a combination of an initial frequency and a target frequency and generates a plurality of sweep signals by changing the frequency from the initial frequency to the target frequency of the extracted piece of signal data in cycles. A plurality of notification vibrations whose frequencies change in different frequency ranges are outputted by outputting the generated sweep signals, individually from the vibrators (exciters EX1 to EX4).
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公开(公告)号：US20180170229A1
公开(公告)日：2018-06-21
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 , H04R1/00 , H04R1/02 , H04R1/025 , H04R3/00
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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公开(公告)号：US20160241985A1
公开(公告)日：2016-08-18
申请号：US15026252
申请日：2014-09-22
Applicant: CLARION CO., LTD.
Inventor： Kazutomo FUKUE , Takeshi HASHIMOTO , Tetsuo WATANABE , Yasuhiro FUJITA
IPC: H04S7/00
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.
Abstract translation: 声场测量装置（1）包括外部输出单元（6），其被配置为向扬声器（9）输出由码长为2n-1（n为自然数）的周期性函数组成的测量信号， 麦克风（7），被配置为拾取从扬声器（9）输出的测量信号;傅立叶变换单元（12），被配置为通过用2m的样本长度拾取的测量声音进行傅立叶变换来获得频率特性（m是自然数 ），构成为从所获得的频率特性除去除了（k×2m-n + 1）线谱（k = 0,1,2等）之外的线谱的稀疏单元（13），以及 平均单元（14），其被配置为基于稀疏的频率特性来获得声场的平均频率特性。
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Patent Agency Ranking
公开(公告)号：US20210031233A1
公开(公告)日：2021-02-04
申请号：US16919037
申请日：2020-07-01
Applicant: CLARION CO., LTD.
Inventor： Takeshi HASHIMOTO , Yasuhiro FUJITA
Abstract: A vibration signal generation apparatus includes an absolute value signal generator configured to generate an absolute value signal by detecting an absolute value of amplitude of an acoustic signal, an envelope signal generator configured to generate an envelope signal by detecting an envelope of the absolute value signal, a differentiator configured to differentiate the envelope signal, an amplitude limiter configured to generate an amplitude-limited signal by limiting amplitude of the envelope signal so that an amplitude value of the differentiated envelope signal becomes zero or greater, and a vibration signal generator configured to generate a vibration signal by multiplying the amplitude-limited signal by a reference signal having a frequency that allows a human to perceive a vibration.
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公开(公告)号：US20200239022A1
公开(公告)日：2020-07-30
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：US20180170255A1
公开(公告)日：2018-06-21
申请号：US15736748
申请日：2016-06-27
Applicant: CLARION CO., LTD.
Inventor： Takeshi HASHIMOTO , Kenji KONO , Tetsuo WATANABE , Yasuhiro FUJITA
CPC classification number: B60Q5/005 , B60R11/02 , B60R11/0217 , B60R2011/0012 , H04R1/025 , H04R3/04 , H04R9/18 , H04R29/001 , H04R2201/023 , H04R2400/03 , H04R2499/13
Abstract: Provided is a notification device and notification method that reduce the output and power consumption of an amplifier or the like and allow a user to sufficiently feel the presence or absence of notification through vibration. A notification device (1) includes a sweep signal generator (4) configured to generate a detection sweep signal by continuously changing the frequency in a frequency band in which a speaker (6) can cause a user to feel a signal in the form of vibration, a vibration detector (7) configured to detect vibration outputted from the speaker (6), and a sound measurement unit (8) configured to detect, as a sweep frequency band, a frequency band in which vibration indicates signal levels equal to or higher than a threshold.The sweep signal generator (4) generates a resonance sweep signal by changing the frequency in the sweep frequency band and causes the speaker (6) to generate vibration.
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公开(公告)号：US20180019720A1
公开(公告)日：2018-01-18
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
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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公开(公告)号：US20160104499A1
公开(公告)日：2016-04-14
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
CPC classification number: G10L19/0204 , 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.
Abstract translation: 信号处理装置包括：频带检测装置，用于从音频信号中检测满足预定条件的频带; 参考信号发生装置，用于根据带检测装置的检测频带产生参考信号; 参考信号校正装置，用于根据其频率特性来校正所产生的参考信号; 用于将校正的参考信号扩展到高于检测带的频带的频带扩展装置; 内插信号生成装置，用于根据音频信号的频率特性对扩展频带内的每个频率分量进行加权来产生内插信号; 以及信号合成装置，用于将所生成的插值信号与音频信号合成。
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