公开(公告)号：US09277316B2

公开(公告)日：2016-03-01

申请号：US13258171

申请日：2011-02-23

申请人： Yutaka Banba ,  Takeo Kanamori

发明人： Yutaka Banba ,  Takeo Kanamori

IPC分类号： H04R3/00 ,  H04R25/00

CPC分类号： H04R3/007 ,  H04R3/005 ,  H04R25/407 ,  H04R25/55 ,  H04R25/552 ,  H04R2225/41

摘要： A sound processing apparatus which can improve precision of analyzes on ambient sounds, carries out analysis on the ambient sounds based upon collected sound signals acquired by two sound collectors. The sound processing apparatus is provided with a level signal converter that converts the collected sound signal into a level signal, which indicates an absolute value of the collected sound signal from which phase information is removed. A level signal synthesizer generates a synthesized level signal in which the level signals acquired from the collected sound signals of the two sound collectors are synthesized, and a detector/identifier carries out analysis on the ambient sounds, based upon the synthesized level signal.

摘要翻译： 可以提高对环境声音的分析精度的声音处理装置，基于由两个声音收集器采集的声音信号对环境声音进行分析。 声音处理装置设置有电平信号转换器，该电平信号转换器将收集的声音信号转换为电平信号，该电平信号指示从其移除相位信息的所收集的声音信号的绝对值。 电平信号合成器产生合成电平信号，其中从两个收集器的收集的声音信号获取的电平信号被合成，并且检测器/标识符基于合成电平信号执行环境声音的分析。

公开(公告)号：US08879749B2

公开(公告)日：2014-11-04

申请号：US13390373

申请日：2011-06-16

申请人： Yasuhiro Terada ,  Takeo Kanamori

发明人： Yasuhiro Terada ,  Takeo Kanamori

IPC分类号： H04R3/00 ,  H04R29/00 ,  H04R1/40 ,  H04R25/00

CPC分类号： H04R29/006 ,  H04R1/406 ,  H04R3/005 ,  H04R25/407 ,  H04R2430/03

摘要： A directional microphone apparatus and directivity control method that corrects a level difference and a phase difference generated in a low band in a plurality of non-directional microphone units, improve the directivity, and reduce the size are provided. Level difference calculation section (105) calculates the level difference between first signal x1(t) obtained by first non-directional microphone unit (101) and second signal x2(t) obtained by second non-directional microphone unit (102), and correction parameter calculation section (106) calculates coefficients of a linear IIR filter configuring correction process section (103) based on the level difference. Correction process section (103) simultaneously corrects the level difference and a phase difference in the low band between two non-directional microphone units by using the calculated coefficients.

摘要翻译： 定向麦克风装置和方向性控制方法，其校正多个非定向麦克风单元中的低频中产生的电平差和相位差，提高方向性，并提供减小尺寸。 电平差计算部（105）计算由第一非定向麦克风单元（101）获得的第一信号x1（t）和由第二非定向麦克风单元（102）获得的第二信号x2（t）之间的电平差， 参数计算部（106）基于该电平差计算线性IIR滤波器构成校正处理部（103）的系数。 校正处理部（103）通过使用计算出的系数同时校正两个非定向麦克风单元之间的低频带的电平差和相位差。

公开(公告)号：US20120008797A1

公开(公告)日：2012-01-12

申请号：US13258171

申请日：2011-02-23

申请人： Yutaka Banba ,  Takeo Kanamori

发明人： Yutaka Banba ,  Takeo Kanamori

IPC分类号： H04R1/40

CPC分类号： H04R3/007 ,  H04R3/005 ,  H04R25/407 ,  H04R25/55 ,  H04R25/552 ,  H04R2225/41

摘要： A sound processing apparatus (100), which can improve precision of analyses on ambient sounds, carries out analysis on the ambient sounds based upon collected sound signals acquired by two sound collectors (first sound collector 110-1 and second sound collector 110-2), and the sound processing apparatus (100) is provided with a level signal conversion section (first level signal conversion section 130-1, second level signal conversion section 130-2) that converts the collected sound signal into a level signal, from which phase information is removed, a level signal synthesizing section (140) that generates a synthesized level signal in which the level signals acquired from the collected sound signals of the two sound collectors (first sound collector 110-1 and second sound collector 110-2) are synthesized, and a detecting and identifying section (160) that carries out analysis on the ambient sounds based upon the synthesized level signal.

摘要翻译： 能够提高环境声音分析精度的声音处理装置（100）基于由两个收集器（第一声音收集器110-1和第二声音收集器110-2）获取的收集的声音信号，对环境声音进行分析， ，并且声音处理装置（100）设置有将所收集的声音信号转换为电平信号的电平信号转换部（第一电平信号转换部130-1，第二电平信号转换部130-2），从该电平信号 信号被消除，电平信号合成部（140），其生成合成电平信号，其中从两个收集器（第一收集器110-1和第二声音收集器110-2）的收集的声音信号获取的电平信号是 以及基于合成电平信号对环境声音进行分析的检测和识别部分（160）。

公开(公告)号：US20110170705A1

公开(公告)日：2011-07-14

申请号：US12674245

申请日：2008-08-21

申请人： Takeo Kanamori

发明人： Takeo Kanamori

IPC分类号： H04R3/00

CPC分类号： H04R3/005

摘要： The directional microphone device according to the present invention solves a problem of increase in thermal noise (problem of decrease in sensitivity) that occurs at the time of directivity synthesis. The directional microphone device includes: a plurality of microphones which have directional and non-directional characteristics; a control unit which generates an output signal using signals outputted from each of the plurality of microphones; and an output unit which outputs the output signal generated by the control to unit. The control unit generates the output signal such that a nearly non-directional directivity and a high sensitivity are obtained in small amplitude range of the output signal, and a directivity and a low sensitivity are obtained in large amplitude range of the output signal.

摘要翻译： 根据本发明的定向麦克风装置解决了在方向性合成时发生的热噪声增加（灵敏度降低的问题）的问题。 定向麦克风装置包括：具有定向和非方向特性的多个麦克风; 控制单元，其使用从所述多个麦克风中的每一个输出的信号来生成输出信号; 以及输出单元，其将由所述控制生成的输出信号输出到单元。 控制单元产生输出信号，使得在输出信号的小幅度范围内获得几乎非方向的方向性和高灵敏度，并且在输出信号的大幅度范围内获得方向性和低灵敏度。

公开(公告)号：US07577262B2

公开(公告)日：2009-08-18

申请号：US10714857

申请日：2003-11-18

申请人： Takeo Kanamori ,  Takashi Kawamura ,  Tomomi Matsuoka

发明人： Takeo Kanamori ,  Takashi Kawamura ,  Tomomi Matsuoka

IPC分类号： H04B15/00

CPC分类号： H04R3/005 ,  H04R2410/01 ,  H04R2410/05

摘要： A signal generating section generates a main signal and a noise reference signal. A determining section determines whether a level ratio is larger than a predetermined value. An adaptive filter section generates a signal indicative of a signal component of a target sound included in the noise reference signal generated by the signal generating section, and learns a filter coefficient only when the determining section determines that the level ratio is larger than the predetermined value. A subtracting section subtracts the signal generated by the adaptive filter section from the noise reference signal. A noise suppressing section suppresses a signal component of noise included in the main signal by using the main signal and the noise reference signal after subtraction by the subtracting section.

摘要翻译： 信号产生部分产生主信号和噪声参考信号。 确定部分确定电平比是否大于预定值。 自适应滤波器部分产生指示由信号产生部分生成的噪声参考信号中包括的目标声音的信号分量的信号，并且仅在确定部分确定电平比大于预定值时才学习滤波器系数 。 减法部从噪声参考信号中减去由自适应滤波器部分产生的信号。 噪声抑制部分通过减法部分减去后的主信号和噪声参考信号来抑制包含在主信号中的噪声的信号分量。

公开(公告)号：US20090129620A1

公开(公告)日：2009-05-21

申请号：US12280842

申请日：2007-02-27

申请人： Junichi Tagawa ,  Takeo Kanamori

发明人： Junichi Tagawa ,  Takeo Kanamori

IPC分类号： H04R1/02

CPC分类号： H04R3/005

摘要： A wearable terminal is constantly worn by a user and continually picks up images and sounds from the surroundings. Even when using a directional microphone to sensitively pick up targeted audio, the wearable terminal can reduce noise occurring due to motion of the device, for example when the user is walking, and reduce the influence of a shift of the sound pickup direction. For this purpose, the wearable terminal includes a sensor for detecting motion, and performs microphone directivity control to use the directional microphone when the amount of motion is small, and to use an omnidirectional microphone that is not likely to be influenced by noise when the amount of motion is large.

摘要翻译： 穿戴式终端由用户不断佩戴，并持续从周围拾取图像和声音。 即使当使用定向麦克风来敏感地拾取目标音频时，穿戴式终端也可以减少例如当用户行走时由于设备的运动而产生的噪音，并且减少了拾音方向的偏移的影响。 为此，可穿戴式终端包括用于检测运动的传感器，并且当运动量小时执行麦克风方向性控制以使用定向麦克风，并且当量不大时使用不可能受噪声影响的全向麦克风 的运动很大。

公开(公告)号：US08249269B2

公开(公告)日：2012-08-21

申请号：US12746624

申请日：2008-12-05

申请人： Shinichi Yuzuriha ,  Takeo Kanamori

发明人： Shinichi Yuzuriha ,  Takeo Kanamori

IPC分类号： H04B3/00 ,  H04R3/00

CPC分类号： H04N7/142 ,  H04M3/565 ,  H04M3/567 ,  H04M3/568 ,  H04R3/005 ,  H04R5/027 ,  H04S2400/11 ,  H04S2400/15

摘要： The present invention provides a sound collecting device capable of, even when using a freely-movable microphone, generating multichannel signals realizing sound image localization without processing using information about the current position of the microphone. The sound collecting device includes: reference microphones fixedly placed so as to correspond to the respective channels, the reference microphones collecting an arriving sound from the speaker, and outputting reference signals representing signals of the respective channels; at least one actual recording microphone placed so as to be movable, the at least one actual recording microphone collecting the arriving sound from the speaker, and outputting the collected sound as an actual recording signal; and signal generation means for generating signals of the respective channels by performing, based on the reference signals outputted by the reference microphones, predetermined calculation processing for the actual recording signal outputted by the at least one actual recording microphone.

摘要翻译： 本发明提供一种能够即使使用可自由移动的麦克风也能够产生实现声像定位的多声道信号的声音采集装置，而不使用关于麦克风的当前位置的信息进行处理。 声音收集装置包括：固定放置以对应于相应通道的参考麦克风，参考麦克风从扬声器收集到达的声音，并输出表示相应声道的信号的参考信号; 至少一个实际记录麦克风被放置成可移动的，所述至少一个实际记录麦克风从扬声器收集到达的声音，并将所收集的声音作为实际记录信号输出; 以及信号发生装置，用于通过根据由参考麦克风输出的参考信号执行由至少一个实际记录麦克风输出的实际记录信号的预定计算处理来产生各个信道的信号。

公开(公告)号：US20120177223A1

公开(公告)日：2012-07-12

申请号：US13497299

申请日：2011-07-26

申请人： Takeo Kanamori ,  Shinichi Yuzuriha ,  Yutaka Banba ,  Yasuhiro Terada

发明人： Takeo Kanamori ,  Shinichi Yuzuriha ,  Yutaka Banba ,  Yasuhiro Terada

IPC分类号： H04B15/00

CPC分类号： G10L21/0208 ,  G10L2021/02165 ,  H04R2410/01 ,  H04R2410/05 ,  H04R2430/25

摘要： A power spectrum estimation unit (200) obtains an estimated sound power spectrum Ps(ω), based on a power spectrum P1(ω) and on a first calculated value obtained by at least multiplying a power spectrum P2(ω) by a weight coefficient A2(ω). A coefficient update unit (300) updates the weight coefficient A2(ω) and a weight coefficient A1(ω) so that a second calculated value approximates to the power spectrum P1(ω). The second calculated value is obtained by adding at least two values obtained by multiplying the power spectrum P2(ω) and the estimated target sound power spectrum Ps(ω) by the weight coefficient A2(ω) and the weight coefficient A1(ω), respectively.

摘要翻译： 功率谱估计单元（200）基于功率谱P1（ω）获得估计声功率谱Ps（ω），并且通过至少将功率谱P2（ω）乘以权重系数获得的第一计算值 A2（ω）。 系数更新单元（300）更新权重系数A2（ω）和加权系数A1（ω），使得第二计算值近似于功率谱P1（ω）。 通过将功率谱P2（ω）和估计的目标声功率谱Ps（ω）乘以权重系数A2（ω）和权重系数A1（ω）而获得的至少两个值来获得第二计算值， 分别。

公开(公告)号：US20120140948A1

公开(公告)日：2012-06-07

申请号：US13390373

申请日：2011-06-16

申请人： Yasuhiro Terada ,  Takeo Kanamori

发明人： Yasuhiro Terada ,  Takeo Kanamori

IPC分类号： H04R3/00

CPC分类号： H04R29/006 ,  H04R1/406 ,  H04R3/005 ,  H04R25/407 ,  H04R2430/03

摘要： A directional microphone apparatus and directivity control method that corrects a level difference and a phase difference generated in a low band in a plurality of non-directional microphone units, improve the directivity, and reduce the size are provided. Level difference calculation section (105) calculates the level difference between first signal x1(t) obtained by first non-directional microphone unit (101) and second signal x2(t) obtained by second non-directional microphone unit (102), and correction parameter calculation section (106) calculates coefficients of a linear IIR filter configuring correction process section (103) based on the level difference. Correction process section (103) simultaneously corrects the level difference and a phase difference in the low band between two non-directional microphone units by using the calculated coefficients.

摘要翻译： 定向麦克风装置和方向性控制方法，其校正多个非定向麦克风单元中的低频中产生的电平差和相位差，提高方向性，并提供减小尺寸。 电平差计算部（105）计算由第一非定向麦克风单元（101）获得的第一信号x1（t）和由第二非定向麦克风单元（102）获得的第二信号x2（t）之间的电平差， 参数计算部（106）基于该电平差计算线性IIR滤波器构成校正处理部（103）的系数。 校正处理部（103）通过使用计算出的系数同时校正两个非定向麦克风单元之间的低频带的电平差和相位差。

公开(公告)号：US08189806B2

公开(公告)日：2012-05-29

申请号：US12092396

申请日：2006-10-30

申请人： Shin-ichi Yuzuriha ,  Takeo Kanamori

发明人： Shin-ichi Yuzuriha ,  Takeo Kanamori

IPC分类号： H04B15/00

CPC分类号： H04R1/406 ,  H04R2201/403

摘要： A sound collection apparatus includes a target sound collection unit that collects a sound including a target sound and outputs a collected-sound signal, a non-target sound collection unit, provided at positions different from each other, forms dead zones of sensitivity in a direction of the target sound source so as to collect a sound outside the dead zones and outputs a collected-sound signal. A sensitivity suppression unit generates a sensitivity suppression signal for suppressing a sound collection sensitivity in an overlap region in which dead zones overlap, as compared to a region surrounding the overlap region, by subjecting, to a predetermined signal processing, the collected-sound signal outputted by the non-target sound collection unit. An extraction unit removes, from the collected-sound signal, the sensitivity suppression signal generated, so as to extract a signal of a sound generated in the overlap region in which the dead zones overlap.

摘要翻译： 声音采集装置包括收集包括目标声音的声音并输出收集声音信号的目标声音收集单元，设置在彼此不同的位置处的非目标声音收集单元，在方向上形成灵敏度的死区 以收集死区外的声音并输出收集的声音信号。 灵敏度抑制单元通过对输出的收集声音信号进行预定的信号处理，产生用于抑制与重叠区域相邻的区域与死区重叠的重叠区域中的收集灵敏度的灵敏度抑制信号 由非目标声音收集单元。 提取单元从所收集的声音信号中除去产生的灵敏度抑制信号，以便提取在死区重叠的重叠区域中产生的声音的信号。