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：US5633935A

公开(公告)日：1997-05-27

申请号：US225625

申请日：1994-04-11

申请人： Takeo Kanamori ,  Junichi Tagawa ,  Satoru Ibaraki ,  Hiroki Furukawa ,  Kiminori Ono

发明人： Takeo Kanamori ,  Junichi Tagawa ,  Satoru Ibaraki ,  Hiroki Furukawa ,  Kiminori Ono

IPC分类号： H04R3/00 ,  H04S1/00 ,  H04R5/00

CPC分类号： H04R3/005 ,  H04S1/002

摘要： A stereo ultradirectional microphone apparatus for detecting a sound to produce stereo sound signals, comprises: first and second ultradirectional microphones arranged side by side with a given distance in parallel for converting a sound into first and second sound signals respectively, first and second delays for delaying an output of the first and second microphones by a delay time .tau. respectively, and first and second subtractors for subtracting for subtraction between the first sound signal and an output of the second delay and subtracting for subtraction between the second sound signal and an output of the first delay. The delay time .tau. corresponds to a difference between the timings of a sound from a sound source in a direction making a clockwise angel .theta. from the front where a dead angel should be made. The subtraction provides the dead angle. Similarly, a dead angle on the side is also made to obtain a stereo characteristic. The directivity in the frequency characteristic of microphone is equalized to cancel the sensitivity in the dead angle. A stereo apparatus for forming the dead angles with two set of two filters having respective transfer characteristics determined by measurement and an adder is also disclosed.

摘要翻译： 一种用于检测声音以产生立体声信号的立体声超方向麦克风装置包括：并排布置给定距离的第一和第二超向量麦克风，用于将声音分别转换成第一和第二声音信号，用于延迟的第一和第二延迟 第一和第二麦克风的输出分别为延迟时间τ，以及第一和第二减法器，用于减去第一声音信号和第二延迟的输出之间的减法，并减去第二声音信号与第二声音信号的输出之间的减法 第一次延迟 延迟时间ττ对应于来自声源的声音的定时之间的差异，该方向从应该制造死角的前方形成顺时针方位角θ的方向。 减法提供死角。 类似地，还制造了一侧的死角以获得立体声特性。 麦克风频率特性的方向性被均衡以抵消死角的灵敏度。 还公开了一种用于通过由测量确定的具有各自的传送特性的两组滤波器和加法器形成死角的立体声装置。

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：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。

公开(公告)号：US08189765B2

公开(公告)日：2012-05-29

申请号：US11822515

申请日：2007-07-06

申请人： Tsuyoki Nishikawa ,  Takeo Kanamori ,  Koichiro Mizushima

发明人： Tsuyoki Nishikawa ,  Takeo Kanamori ,  Koichiro Mizushima

IPC分类号： H04M9/08 ,  A61F11/06 ,  H04B15/00

CPC分类号： H04M9/082

摘要： A multichannel echo canceller according to the present invention includes an echo cancellation section which receives loudspeaker input signals sp1, sp2 including a second acoustic signal to be respectively inputted to a plurality of loudspeakers 10, 20 provided in a first location and detection signals m1, m2 detected by a plurality of microphones 11, 21 provided in the first location; separates a first acoustic signal and a second acoustic signal, which are included in the detection signals m1, m2, by performing signal processing based on an independent component analysis; cancels as an echo the second acoustic signal, which is included in the detection signals m1, m2, by outputting only the separated first acoustic signal to a plurality of loudspeakers 30, 40 provided in a second location.

摘要翻译： 根据本发明的多通道回波消除器包括回波消除部分，其接收扬声器输入信号sp1，sp2，包括分别输入到设置在第一位置的多个扬声器10,20的第二声信号，以及检测信号m1，m2 由设置在第一位置的多个麦克风11,21检测; 通过执行基于独立分量分析的信号处理来分离包含在检测信号m1，m2中的第一声信号和第二声信号; 通过仅将分离的第一声信号输出到设置在第二位置的多个扬声器30,40，来将包含在检测信号m1，m2中的第二声信号取回。

公开(公告)号：US07567900B2

公开(公告)日：2009-07-28

申请号：US10542931

申请日：2004-06-03

申请人： Tetsu Suzuki ,  Takeo Kanamori ,  Takashi Kawamura

发明人： Tetsu Suzuki ,  Takeo Kanamori ,  Takashi Kawamura

IPC分类号： G10L15/20 ,  G10L11/06 ,  G10L15/00 ,  G10L17/00

CPC分类号： G10L25/78 ,  G10L2025/932 ,  G10L2025/937

摘要： A harmonic structure acoustic signal detection device not depending on the level fluctuation of the input signal including: an FFT unit which performs FFT on an input signal and calculates a power spectrum component for each frame; a harmonic structure extraction unit which leaves only a harmonic structure from the power spectrum component; a voiced feature evaluation unit which evaluates correlation between the frames of harmonic structures extracted by the harmonic structure extraction unit, thereby evaluates whether or not the segment is a vowel segment, and extracts the voiced segment; and a speech segment determination unit which determines a speech segment according to the continuity and durability of the output of the voiced feature evaluation unit.

摘要翻译： 一种谐波结构声信号检测装置，其不依赖于输入信号的电平波动，包括​​：FFT单元，对输入信号执行FFT并计算每帧的功率谱分量; 谐波结构提取单元，仅从功率谱分量中留下谐波结构; 声音特征评估单元，其评估由所述谐波结构提取单元提取的谐波结构的相关性，从而评估所述段是否是元音段，并且提取所述有声段; 以及语音段确定单元，其根据有声特征评估单元的输出的连续性和耐久性来确定语音段。

公开(公告)号：US20080008333A1

公开(公告)日：2008-01-10

申请号：US11822515

申请日：2007-07-06

申请人： Tsuyoki Nishikawa ,  Takeo Kanamori ,  Koichiro Mizushima

发明人： Tsuyoki Nishikawa ,  Takeo Kanamori ,  Koichiro Mizushima

IPC分类号： H04B15/00

CPC分类号： H04M9/082

摘要： A multichannel echo canceller according to the present invention includes an echo cancellation section which receives loudspeaker input signals sp1, sp2 including a second acoustic signal to be respectively inputted to a plurality of loudspeakers 10, 20 provided in a first location and detection signals m1, m2 detected by a plurality of microphones 11, 21 provided in the first location; separates a first acoustic signal and a second acoustic signal, which are included in the detection signals m1, m2, by performing signal processing based on an independent component analysis; cancels as an echo the second acoustic signal, which is included in the detection signals m1, m2, by outputting only the separated first acoustic signal to a plurality of loudspeakers 30, 40 provided in a second location.

摘要翻译： 根据本发明的多通道回波消除器包括回波消除部分，其接收分别输入到设置在第一位置的多个扬声器10,20的第二声信号的扬声器输入信号sp 1，sp 2，并且检测信号m 1，m 2由设置在第一位置的多个麦克风11,21检测; 通过执行基于独立分量分析的信号处理来分离包含在检测信号m 1，m 2中的第一声信号和第二声信号; 通过仅将分离的第一声信号输出到设置在第二位置的多个扬声器30,40，来将包含在检测信号m 1，m 2中的第二声信号取回。