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

IPC: H04S7/00 ,  H04R3/04

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.

公开(公告)号：US20150030171A1

公开(公告)日：2015-01-29

申请号：US14381989

申请日：2013-01-23

Applicant: CLARION CO., LTD

Inventor： Takeshi Hashimoto ,  Tetsuo Watanabe

IPC: G10L21/057 ,  G10K11/175

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。

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

IPC: H03G5/16 ,  H04S7/00 ,  G10K15/00

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.

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.

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

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

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.

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.