公开(公告)号：US20170307721A1

公开(公告)日：2017-10-26

申请号：US15523428

申请日：2015-11-06

申请人： NEC Corporation ,  NEC Engineering, Ltd.

发明人： Akihiko SUGIYAMA ,  Ryoji MIYAHARA

IPC分类号： G01S3/808 ,  G10L21/0224 ,  G10L25/51 ,  G10L21/0272 ,  H04R1/40

摘要： A wideband signal is enhanced or suppressed to the same extent at each frequency without increasing the size of an overall sensor array. To achieve this, there is provided a signal processing apparatus including a direction estimator that obtains a direction of arrival of a signal for signals received from a plurality of sensors and each containing a target signal and noise, a first gain calculator that calculates a first gain using the direction of arrival of the signal, an integrator that obtains an integrated signal by integrating the signals received from the plurality of sensors, and a multiplier that multiplies the first gain by the integrated signal.

公开(公告)号：US20180090153A1

公开(公告)日：2018-03-29

申请号：US15571914

申请日：2016-04-14

申请人： NEC Corporation ,  NEC Engineering, Ltd.

发明人： Osamu HOSHUYAMA ,  Ryoji MIYAHARA ,  Akihiko SUGIYAMA

IPC分类号： G10L21/0232 ,  H04R1/40 ,  G10L25/84 ,  H04R3/00

CPC分类号： G10L21/0232 ,  G10L21/0208 ,  G10L25/84 ,  G10L2021/02165 ,  H04M1/026 ,  H04M1/6008 ,  H04R1/086 ,  H04R1/406 ,  H04R3/00 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2410/07

摘要： There is provided a signal processing apparatus that obtains a speech signal with sufficiently reduced wind noise. The signal processing apparatus includes a main microphone that is provided so as to be readily influenced by movement of air outside the signal processing apparatus, a sub microphone that is provided so as to be hardly influenced by movement of air outside the signal processing apparatus, a determiner that determines, based on a strength of a main speech signal output from the main microphone, whether the main speech signal includes a predetermined amount of wind noise, and a selector that receives the main speech signal and a sub speech signal output from the sub microphone, executes, if it is determined that the main speech signal includes the predetermined amount of wind noise, selection processing for outputting the sub speech signal, and executes, if it is determined that the main speech signal includes no predetermined amount of wind noise, selection processing for outputting the main speech signal.

公开(公告)号：US20210392445A1

公开(公告)日：2021-12-16

申请号：US17417491

申请日：2019-12-16

申请人： NEC Corporation ,  NEC Platforms, Ltd.

发明人： Kouji OOSUGI ,  Takayuki ARAKAWA ,  Akihiko SUGIYAMA ,  Ryoji MIYAHARA

IPC分类号： H04R25/00 ,  G10L21/0208

摘要： By performing both noise cancellation and echo cancellation, a high-quality main voice signal is generated. A voice input/output apparatus includes a noise acquirer that is arranged toward an outside of a body of a user and acquires external noise arriving from the outside of the user, a voice output unit that accepts an input of a voice signal and outputs a voice to an ear canal of the user, a main voice acquirer that acquires a mixed voice, in which the external noise, the output voice, and a main voice of the user transmitted from a vocal cord of the user through the ear canal are mixed, and outputs a mixed voice signal, a noise canceler that processes the mixed voice signal using a noise signal based on the external noise, and an echo canceler that processes the mixed voice signal using the voice signal.

公开(公告)号：US20240160709A1

公开(公告)日：2024-05-16

申请号：US18282740

申请日：2021-03-18

申请人： NEC Corporation ,  NEC Platforms, Ltd.

发明人： Ryoji MIYAHARA

IPC分类号： G06F21/32 ,  H04R1/10

CPC分类号： G06F21/32 ,  H04R1/1016

摘要： An authentication management device acquires a result of authenticating a user by otoacoustic authentication in an earphone; stores the authentication result; after the authentication result is acquired, acquires a wearing determination result indicating whether the earphone is worn in an ear of the user on the basis of a detection result of a proximity sensor; and updates the stored authentication result when the wearing determination result indicates that the earphone is not worn in the ear.

公开(公告)号：US20160019914A1

公开(公告)日：2016-01-21

申请号：US14773273

申请日：2014-02-26

申请人： NEC CORPORATION

发明人： Akihiko SUGIYAMA ,  Ryoji MIYAHARA

IPC分类号： G10L25/51 ,  G10L21/0232

CPC分类号： G10L25/51 ,  A61B5/0002 ,  A61B5/024 ,  A61B5/0402 ,  A61B5/7203 ,  A61B5/7235 ,  G10L21/0232 ,  G10L25/18

摘要： This invention provides a signal processing apparatus for effectively detecting an abrupt change in an input signal. The signal processing apparatus includes a converter that converts an input signal into a phase component signal and an amplitude component signal in a frequency domain. The signal processing apparatus further includes a calculator that calculates feature amounts of the phase component signal and the amplitude component signal derived by the converter. The signal processing apparatus further includes a determiner that determines presence probability of an abrupt change in the input signal based on the feature amounts calculated by the calculator.

摘要翻译： 本发明提供一种用于有效地检测输入信号的突然变化的信号处理装置。 信号处理装置包括将输入信号转换为频域中的相位分​​量信号和幅度分量信号的转换器。 信号处理装置还包括计算器，其计算相位分量信号的特征量和由转换器导出的幅度分量信号。 信号处理装置还包括基于由计算器计算出的特征量来确定输入信号突然变化的存在概率的确定器。

公开(公告)号：US20230353953A1

公开(公告)日：2023-11-02

申请号：US18220611

申请日：2023-07-11

申请人： NEC CORPORATION

发明人： Kouji OOSUGI ,  Takayuki ARAKAWA ,  Akihiko SUGIYAMA ,  Ryoji MIYAHARA

IPC分类号： H04R25/00 ,  G10L21/0208

CPC分类号： H04R25/502 ,  H04R25/603 ,  G10L21/0208 ,  G10L2021/02082

摘要： By performing both noise cancellation and echo cancellation, a high-quality main voice signal is generated. A voice input/output apparatus includes a noise acquirer that is arranged toward an outside of a body of a user and acquires external noise arriving from the outside of the user, a voice output unit that accepts an input of a voice signal and outputs a voice to an ear canal of the user, a main voice acquirer that acquires a mixed voice, in which the external noise, the output voice, and a main voice of the user transmitted from a vocal cord of the user through the ear canal are mixed, and outputs a mixed voice signal, a noise canceler that processes the mixed voice signal using a noise signal based on the external noise, and an echo canceler that processes the mixed voice signal using the voice signal.

公开(公告)号：US20160217803A1

公开(公告)日：2016-07-28

申请号：US14915221

申请日：2014-06-16

申请人： NEC CORPORATION

发明人： Akihiko SUGIYAMA ,  Ryoji MIYAHARA

IPC分类号： G10L21/02 ,  G10L21/0388 ,  G10L21/0332

CPC分类号： G10L21/0205 ,  A61B5/04014 ,  A61B5/0452 ,  A61B5/0456 ,  A61B5/7257 ,  G10L19/025 ,  G10L21/0232 ,  G10L21/0332 ,  G10L21/0388

摘要： A signal processing apparatus for effectively detecting an abrupt change in a signal, in particular, an abrupt change different from an ideal pulse includes a converter that converts an input signal into a phase component signal in a frequency domain, a first calculator that calculates a phase gradient for each of a plurality of frequencies of the phase component signal as a first phase gradient, a weighting unit that weights the first phase gradient with an amplitude or a power of the input signal, thereby calculating a weighted first phase gradient, a second calculator that calculates a second phase gradient based on the weighted first phase gradient, and a determiner that determines presence of an abrupt change in the input signal based on the first phase gradient and the second phase gradient.

摘要翻译： 用于有效地检测信号的突然变化，特别是与理想脉冲不同的突然变化的信号处理装置包括将输入信号转换为频域中的相位分​​量信号的转换器，计算相位 相位分量信号的多个频率中的每一个的梯度作为第一相位梯度，加权单元，用输入信号的幅度或功率对第一相位梯度进行加权，由此计算加权的第一相位梯度，第二计算器 其基于所述加权的第一相位梯度计算第二相位梯度，以及确定器，其基于所述第一相位梯度和所述第二相位梯度来确定所述输入信号中的突然变化的存在。

公开(公告)号：US20240311458A1

公开(公告)日：2024-09-19

申请号：US18281866

申请日：2021-03-18

申请人： NEC Corporation ,  NEC Platforms, Ltd.

发明人： Ryoji MIYAHARA

IPC分类号： G06F21/32 ,  G06F3/01 ,  H04R1/10

CPC分类号： G06F21/32 ,  G06F3/017 ,  H04R1/1091

摘要： An authentication management device acquires first position information indicating a change in the position of a user's earphone equipped with a first authentication means based on otoacoustic authentication; on the basis of the acquired first position information, estimates motion of the user wearing the earphone by generating motion information indicating the motion of the user; and executes authentication of the user in a device connected to the earphone on the basis of the result of the authentication by otoacoustic authentication and the motion information.

公开(公告)号：US20190027159A1

公开(公告)日：2019-01-24

申请号：US16067850

申请日：2016-12-20

申请人： NEC CORPORATION ,  NEC Platforms, Ltd.

发明人： Akihiko SUGIYAMA ,  Ryoji MIYAHARA

IPC分类号： G10L21/028 ,  G10L21/0316 ,  G10L25/84

CPC分类号： G10L21/028 ,  G10L21/0208 ,  G10L21/0272 ,  G10L21/0316 ,  G10L25/84 ,  H04R3/00 ,  H04R2420/01 ,  H04R2430/01

摘要： There is provided a signal processing apparatus for amplifying or attenuating, with respect to a signal in which a desired signal and another signal are mixed, the desired signal and the other signal at different ratios. The signal processing apparatus includes a separator that obtains an estimated first signal and an estimated second signal by receiving a mixed signal in which a first signal (for example, speech) and a second signal (for example, noise) are mixed and estimating the first signal and the second signal. Furthermore, the signal processing apparatus includes a gain adjuster that obtains a gain-adjusted mixed signal by receiving the estimated first signal and the estimated second signal.

公开(公告)号：US20160019913A1

公开(公告)日：2016-01-21

申请号：US14773271

申请日：2014-02-26

申请人： NEC CORPORATION ,  RENESAS ELECTRONICS CORPORATION

发明人： Akihiko SUGIYAMA ,  Kwangsoo PARK ,  Ryoji MIYAHARA

IPC分类号： G10L25/51 ,  G10L21/0232 ,  G10L25/87

CPC分类号： G10L25/51 ,  G10L21/0232 ,  G10L21/0264 ,  G10L25/18 ,  G10L25/87

摘要： Disclosed is a signal processing apparatus that processes an input signal to accurately detect an abrupt change in the input signal in accordance with the degree of linear change of a phase component in a frequency domain. The signal processing apparatus includes a converter that converts the input signal into the phase component and an amplitude component in the frequency domain, a linearity calculator that calculates the linearity of the phase component in the frequency domain, and a determiner that determines presence of the abrupt change in the input signal based on the linearity calculated by the linearity calculator.

摘要翻译： 公开了一种信号处理装置，其处理输入信号，以根据频域中的相位分​​量的线性变化的程度来精确地检测输入信号的突变。 信号处理装置包括将输入信号转换为频域中的相位分​​量和幅度分量的转换器，计算频域中的相位分​​量的线性度的线性度计算器和确定突发的存在的确定器 根据线性度计算出的线性度，改变输入信号。