公开(公告)号：US20160360330A1

公开(公告)日：2016-12-08

申请号：US15118930

申请日：2015-02-04

Applicant: Clarion Co., Ltd.

Inventor： Yasuhiro FUJITA ,  Takeshi HASHIMOTO ,  Tetsuo WATANABE ,  Kazutomo FUKUE

IPC: H04R29/00 ,  H04R3/04

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.

Abstract translation: 声学处理装置包括：谐振频带检测装置，其基于通过扬声器再现的预定测量信号的测量结果来检测从扬声器输出的声音的谐振频带; 分析装置，分析预定测量信号的测量结果; 控制参数产生装置，根据分析装置的分析结果生成用于控制由共振频带检测装置检测到的共振频带的控制参数; 以及音频信号控制装置，其基于由控制参数发生装置产生的控制参数来控制从预定音频信号再现装置输入的音频信号，使得音频信号的再现声音的共振频带分量被抑制为短 时间轴。

公开(公告)号：US20160134985A1

公开(公告)日：2016-05-12

申请号：US14901165

申请日：2014-06-19

Applicant: CLARION CO., LTD.

Inventor： Takeshi HASHIMOTO ,  Tetsuo WATANABE ,  Yasuhiro FUJITA ,  Kazutomo FUKUE

IPC: H04S7/00 ,  H03H17/08 ,  H03H17/02 ,  H03H17/00 ,  H04S1/00 ,  H04R3/04

CPC classification number: H04S7/302 ,  H03H17/0009 ,  H03H17/0213 ,  H03H17/08 ,  H04R3/04 ,  H04R2499/13 ,  H04S1/00 ,  H04S2420/07

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 hands; 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.

Abstract translation: 一种传播延迟调整装置，包括用于通过对音频信号进行短期傅立叶变换来产生频谱信号的装置; 用于为多个预定频带中的每一个设定传播延迟时间的装置，用于根据针对多个预定频带中的每一个预定频带设定的传播延迟时间来计算多个预定频带中的每一个的相位控制量的装置 频带; 用于通过对所述多个预定频率指针中的每一个的计算出的相位控制量进行平滑来产生相位控制信号的装置; 基于所生成的相位控制信号，控制多个预定频带中的每一个的频谱信号的相位的装置; 以及用于生成音频信号的装置，通过对针对多个预定频带中的每一个频带控制相位的频谱信号执行反向短期傅立叶变换，进行传播延迟校正。

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

IPC: B60Q5/00 ,  B60R11/02 ,  H04R1/02 ,  H04R29/00 ,  H04R3/04

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.

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

IPC: H03G5/16 ,  H03G5/00

CPC classification number: H03G5/165 ,  H03G5/005 ,  H03H17/02 ,  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.

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。

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

IPC: H03G9/02 ,  H03H17/02 ,  H04R3/04

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.

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

IPC: B60N2/90 ,  H04R1/02 ,  B60W50/16

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.

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。

公开(公告)号：US20160219385A1

公开(公告)日：2016-07-28

申请号：US14916567

申请日：2014-09-19

Applicant: CLARION CO., LTD.

Inventor： Takeshi HASHIMOTO ,  Kazutomo FUKUE ,  Tetsuo WATANABE ,  Yasuhiro FUJITA

IPC: H04R29/00 ,  G10L21/18 ,  G10L21/14

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.

Abstract translation: 声场测量装置（1）通过收集以窄间隔安装的一对扬声器（101a，101b）输出的输出声音来获得频率特性。 低通滤波器（22a）提取第一测量信号的低范围分量。 高通滤波器（22b）提取与第一测量信号不同的第二测量信号的中/高范围分量。 组合信号生成单元（22c）通过组合第一测量信号的低范围分量和第二测量信号的中/高范围分量来生成组合信号。 外部输出单元（6）将第一测量信号输出到音频系统（102）。 麦克风（7）收集从该对扬声器同时输出的第一测量信号和组合信号。 傅立叶变换单元（13）通过对收集的信号进行傅里叶变换来获得声场的频率特性。

公开(公告)号：US20170150260A1

公开(公告)日：2017-05-25

申请号：US15129827

申请日：2015-02-20

Applicant: CLARION CO., LTD.

Inventor： Takeshi HASHIMOTO ,  Tetsuo WATANABE ,  Yasuhiro FUJITA ,  Kazutomo FUKUE

IPC: H04R3/04 ,  H04R1/02 ,  H04R29/00

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.