公开(公告)号：US08638952B2

公开(公告)日：2014-01-28

申请号：US12817406

申请日：2010-06-17

申请人： Naoshi Matsuo

发明人： Naoshi Matsuo

IPC分类号： H04B15/00

CPC分类号： H04R3/005 ,  G10L21/0208 ,  G10L2021/02165

摘要： There is provided a signal processing apparatus, for suppressing a noise, which includes a first calculator to obtain a phase difference between two spectrum signals in a frequency domain transformed from sound signals received by at least two microphones to estimate a sound source by the phase difference, a second calculator to obtain a value representing a target signal likelihood and to determine a sound suppressing phase difference range at each frequency, in which a sound signal is suppressed, on the basis of the target signal likelihood, and a filter. The filter generate a synchronized spectrum signal by synchronizing each frequency component of one of the two spectrum signals to each frequency component of the other of the two spectrum signals for each frequency when the phase difference is within the sound suppressing phase difference range and to generate a filtered spectrum signal.

摘要翻译： 提供了一种用于抑制噪声的信号处理装置，其包括第一计算器，以获得从由至少两个麦克风接收的声音信号变换的频域中的两个频谱信号之间的相位差，以通过相位差来估计声源 ，第二计算器，用于获得表示目标信号似然性的值，并且基于目标信号似然率确定抑制了声音信号的每个频率处的声音抑制相位差范围和滤波器。 当相位差在声音抑制相位差范围内时，滤波器通过将两个频谱信号之一的每个频率分量与每个频率的另一个频谱信号中的另一个的每个频率分量同步，并产生同步频谱信号 滤波频谱信号。

公开(公告)号：US08620388B2

公开(公告)日：2013-12-31

申请号：US12494779

申请日：2009-06-30

申请人： Shoji Hayakawa ,  Naoshi Matsuo ,  Hiroshi Katayama

发明人： Shoji Hayakawa ,  Naoshi Matsuo ,  Hiroshi Katayama

IPC分类号： H04M1/00

CPC分类号： G10L21/0208 ,  G10L2021/02165 ,  G10L2021/02166

摘要： A noise suppressing device receives sound signals through a plurality of sound-receiving units and suppresses noise components included in the input sound signals. The noise suppressing device includes a detecting unit which detects a usage pattern of the noise suppressing device from a plurality of usage patterns in which positional relationships of the plurality of sound-receiving units and/or positional relationships between the plurality of sound-receiving units and a target sound source are different from each other, a converting unit which converts using environment information used in a noise suppressing process to each of the sound signals inputted by the plurality of sound-receiving units into using environment information in accordance with a usage pattern detected by the detecting unit and a suppressing unit which performs the noise suppressing process using the using environment information converted by the converting unit to the sound signals.

摘要翻译： 噪声抑制装置通过多个声音接收单元接收声音信号，并抑制包含在输入声音信号中的噪声分量。 噪声抑制装置包括检测单元，其从多个使用模式中检测噪声抑制装置的使用模式，多个使用模式中多个声音接收单元的位置关系和/或多个声音接收单元之间的位置关系和 目标声源彼此不同;转换单元，其根据检测到的使用模式，将使用在噪声抑制处理中的环境信息转换为由多个声音接收单元输入的每个声音信号变为使用环境信息 通过检测单元和抑制单元，该抑制单元使用由转换单元转换成的声音信号进行噪声抑制处理。

公开(公告)号：US08249270B2

公开(公告)日：2012-08-21

申请号：US11698113

申请日：2007-01-26

申请人： Naoshi Matsuo

发明人： Naoshi Matsuo

IPC分类号： H04B15/00

CPC分类号： G10L21/0208

摘要： A sound signal correcting apparatus converts an acquired sound signal into a phase spectrum and an amplitude spectrum by an FFT process, compares the amplitude spectrum of the obtained sound signal with a noise model so that a correction coefficient used for correcting the amplitude spectrum of the sound signal is derived, smoothes waveform of the amplitude spectrum of the sound signal using the derived correction coefficient, and converts the sound signal into a sound signal where the amplitude spectrum is corrected by performing an inverse FFT process on the phase spectrum and the smoothed amplitude spectrum.

摘要翻译： 声音信号校正装置通过FFT处理将所获取的声音信号转换为相位谱和幅度谱，将所获得的声音信号的振幅谱与噪声模型进行比较，以便用于校正声音的幅度谱的校正系数 导出信号，使用导出的校正系数平滑声音信号的振幅谱的波形，并且通过对相位谱进行逆FFT处理并且将平滑的幅度谱转换成声音信号，该声音信号被校正了振幅谱 。

公开(公告)号：US20100027805A1

公开(公告)日：2010-02-04

申请号：US12453177

申请日：2009-04-30

申请人： Taisuke Itou ,  Naoshi Matsuo

发明人： Taisuke Itou ,  Naoshi Matsuo

IPC分类号： G10K11/16

CPC分类号： G10K11/178 ,  G10K2210/1282 ,  G10K2210/30232 ,  G10K2210/3033 ,  G10K2210/3055 ,  H04R2499/13 ,  H04S7/303

摘要： A transfer function estimating device for estimating a transfer function of a sound, includes: a sound receiving module receiving a sound from a given sound source and converting the sound into a tone signal; a storage module storing first transfer functions of the sound propagating from the given sound source to the sound receiving module and transformation coefficients for converting the first transfer functions into given second transfer functions so as to associate with each other; a reference tone signal acquiring module acquiring a reference tone signal of the sound source; an acquiring module acquiring a transfer function of the sound received by the sound receiving module on the basis of the tone signal and the reference tone signal; a specifying module acquiring a cross-correlation value between the transfer function acquired by the acquiring module and each of the first transfer functions stored in the storage module.

摘要翻译： 用于估计声音的传递函数的传递函数估计装置包括：声音接收模块，接收来自给定声源的声音并将声音转换成音调信号; 存储模块，其将从所述给定声源传播的声音的第一传递函数存储到所述声音接收模块;以及变换系数，用于将所述第一传递函数转换为给定的第二传递函数，以便彼此关联; 参考音信号获取模块，用于获取所述声源的参考音信号; 获取模块，基于所述音调信号和所述参考音调信号，获取由所述声音接收模块接收的声音的传递函数; 指定模块获取由所述获取模块获取的所述传递函数与存储在所述存储模块中的所述第一传递函数之间的互相关值。

公开(公告)号：US20090076810A1

公开(公告)日：2009-03-19

申请号：US12232177

申请日：2008-09-11

申请人： Naoshi Matsuo

发明人： Naoshi Matsuo

IPC分类号： G10L21/00 ,  G10L19/14 ,  G10L15/20

CPC分类号： H03G3/32

摘要： A sound processing apparatus is provided for estimating the power of background noise using a directional sound receiving technology using a plurality of sound receiving units, computing a gain control value on the basis of the estimated power of background noise and a predetermined power target value, and outputting the gain control value, so that a delay time of starting gain control can be reduced, and a slow response of a speech recognition application program or degradation of the speech quality of a voice communication program can be prevented.

摘要翻译： 提供了一种使用使用多个声音接收单元的定向声音接收技术来估计背景噪声的功率的声音处理装置，基于背景噪声的估计功率和预定的功率目标值来计算增益控制值，以及 输出增益控制值，使得可以减少开始增益控制的延迟时间，并且可以防止语音识别应用程序的缓慢响应或语音通信程序的语音质量的劣化。

公开(公告)号：US07116791B2

公开(公告)日：2006-10-03

申请号：US10721067

申请日：2003-11-26

申请人： Naoshi Matsuo

发明人： Naoshi Matsuo

IPC分类号： H04R3/00

CPC分类号： H04R3/005 ,  H04R2201/401

摘要： The present invention provides a sound signal processing function comprising a plurality of kinds of sound signal processing with the same arrangement of microphones that does not require replacement of the microphones or the sound signal processing part regardless of the application or the sound signal processing function.The present invention uses an apparatus having a signal processing function such as a personal computer as the platform. An array section includes a plurality of microphones arranged in the X and Y axis directions. A received sound signal from each direction is subjected to a delay process by a delay unit, a subtraction process by subtracters 121 and 122, so as to obtain a received sound signal with a unidirectional pattern to the direction of the front of the apparatus and a received sound signal with a bidirectional pattern to the directions orthogonal thereto. In the case where the sound source is not in the direction of the front, a correction process to direct the sound source to the front is performed by a delay unit, a subtracter and adjustment of the gain amount. The directional sound signal calculating part, the sound source direction detecting part, and the noise suppressing part have a logic necessary to implement various functions using the uni/bidirectivity pattern signal as the input.

摘要翻译： 本发明提供一种声音信号处理功能，其包括具有相同配置的麦克风的多种声音信号处理，其不需要替换麦克风或声音信号处理部分，而与应用或声音信号处理功能无关。 本发明使用具有诸如个人计算机之类的信号处理功能的装置作为平台。 阵列部分包括沿X轴方向和Y轴方向排列的多个麦克风。 来自每个方向的接收到的声音信号由延迟单元进行延迟处理，减法器121和122进行减法处理，以便获得具有单向图案的接收声音信号到设备前部的方向，以及 接收到与其正交的方向的双向图案的声音信号。 在声源不在前方的情况下，通过延迟单元，减法器和增益量的调整来进行将声源引导到前方的校正处理。 定向声音信号计算部分，声源方向检测部分和噪声抑制部分具有使用单向/双向图案信号作为输入来实现各种功能所需的逻辑。

公开(公告)号：US06760450B2

公开(公告)日：2004-07-06

申请号：US10035507

申请日：2001-10-26

申请人： Naoshi Matsuo

发明人： Naoshi Matsuo

IPC分类号： H04R300

CPC分类号： H04R3/005 ,  H04R2201/403 ,  H04R2410/05 ,  H04R2430/23

摘要： A microphone array apparatus includes a microphone array including microphones, one of the microphones being a reference microphone, filters receiving output signals of the microphones, and a filter coefficient calculator which receives the output signals of the microphones, a noise and a residual signal obtained by subtracting filtered output signals of the microphones other than the reference microphone from a filtered output signal of the reference microphone and which obtain filter coefficients of the filters in accordance with an evaluation function based on the residual signal.

公开(公告)号：US06618485B1

公开(公告)日：2003-09-09

申请号：US09100033

申请日：1998-06-19

申请人： Naoshi Matsuo

发明人： Naoshi Matsuo

IPC分类号： H04R300

CPC分类号： H04R3/005

摘要： The present invention provides a microphone array including a small number of real microphone that can realize the same characteristics as a microphone array including a large number of real microphones. The microphone array of the present invention includes a plurality of real microphones, at least one virtual microphone, and an estimator for estimating a sound signal to be received by the virtual microphone based on the sound signals received by the real microphones.

公开(公告)号：US5717854A

公开(公告)日：1998-02-10

申请号：US563544

申请日：1995-11-28

申请人： Hiroichi Egawa ,  Kiichi Matsuda ,  Yasushi Inamoto ,  Takashi Hamano ,  Naoshi Matsuo

发明人： Hiroichi Egawa ,  Kiichi Matsuda ,  Yasushi Inamoto ,  Takashi Hamano ,  Naoshi Matsuo

IPC分类号： G06F13/00 ,  G06F15/16 ,  G06F15/173 ,  G06F17/30 ,  H04N7/14 ,  H04N7/173 ,  H04Q11/04

CPC分类号： H04L49/105 ,  H04L49/3081 ,  H04N7/147 ,  H04N7/17336 ,  H04Q11/0478 ,  H04L2012/5638

摘要： Each of processor units 31-1-31-n comprises a CPU, memory, and interface function. A high-speed communications network 32 interconnects the processor units for inter-processor communications. Each of input/output units 33-1-33-n stores multimedia data and transmits the multimedia data through the network under the control of the corresponding processor unit. A processor control unit 34 controls the process of each of the processor units 31-1-31-n according to the process request received through the network. A switch 35 connects each of the input/output units 33-1-33-n to the network and exchanges data through the network. A communications line 36 transfers an instruction, etc. from the processor control unit 34 to each of the processor units 31-1-31-n.

摘要翻译： 每个处理器单元31-1-31-n包括CPU，存储器和接口功能。 高速通信网络32将用于处理器间通信的处理器单元互连。 输入/输出单元33-1-33-n中的每一个存储多媒体数据，并在对应的处理器单元的控制下通过网络发送多媒体数据。 处理器控制单元34根据通过网络接收的处理请求来控制每个处理器单元31-1-31-n的处理。 开关35将输入/输出单元33-1-33-n中的每一个连接到网络并通过网络交换数据。 通信线路36将处理器控制单元34的指令等传送到每个处理器单元31-1-31-n。

公开(公告)号：US09747919B2

公开(公告)日：2017-08-29

申请号：US13324297

申请日：2011-12-13

申请人： Naoshi Matsuo

发明人： Naoshi Matsuo

IPC分类号： G10L21/0208 ,  H04R3/00 ,  G10L21/0224 ,  G10L21/0216 ,  H04R5/00

CPC分类号： G10L21/0208 ,  G10L21/0224 ,  G10L2021/02165 ,  H04R3/005 ,  H04R5/00

摘要： A sound processing apparatus includes a first calculator that calculates first power based on a first signal received by a first microphone that is among the first microphone and a second microphone; a second calculator that calculates second power based on a second signal received by the second microphone; a gain calculator that calculates a gain on the basis of the ratio of the first power to the second power; and a multiplier that processes the second signal using the gain calculated by the gain calculator.