公开(公告)号：EP3296988B1

公开(公告)日：2019-11-13

申请号：EP17188111.3

申请日：2017-08-28

Applicant: FUJITSU LIMITED

Inventor： Matsumoto, Chikako ,  Matsuo, Naoshi

IPC: G10L15/20 ,  G10L25/06 ,  G10L21/0208 ,  G10L21/0216

公开(公告)号：EP3438977A1

公开(公告)日：2019-02-06

申请号：EP18194750.8

申请日：2017-05-29

Applicant: FUJITSU LIMITED

Inventor： Matsuo, Naoshi

IPC: G10L21/0208 ,  H03G3/32 ,  H03G3/34 ,  G10L21/0216 ,  G10L21/0316 ,  G10L21/0224 ,  G10L25/06

CPC classification number: G10L21/0264 ,  G10L21/0208 ,  G10L21/0224 ,  G10L21/0316 ,  G10L25/06 ,  G10L25/21 ,  G10L2021/02082 ,  G10L2021/02087 ,  G10L2021/02165 ,  H03G3/32 ,  H04R3/005 ,  H04R3/04

Abstract: A noise suppression device includes: an adaptive filter unit that suppresses, using an adaptive filter, a noise component contained in a voice signal generated from a voice captured by a voice input unit to generate a corrected voice signal; a noise generation detection unit that detects timing of generation of the noise component in the voice signal; and a period suppression unit that suppresses the corrected voice signal during a predetermined period of time after the timing of the generation of the noise component.

公开(公告)号：EP2738763A2

公开(公告)日：2014-06-04

申请号：EP13190939.2

申请日：2013-10-30

Applicant: FUJITSU LIMITED

Inventor： Matsuo, Naoshi

IPC: G10L21/0232

CPC classification number: G10L21/0232 ,  G10L21/0316

Abstract: A speech enhancement apparatus includes: a noise estimating unit which estimates a noise component contained in a speech signal for each frequency band; a signal-to-noise ratio computing unit which computes, for each frequency band, a signal-to-noise ratio; a gain computing unit which selects a frequency band whose computed signal-to-noise ratio indicates that the signal component contained in the speech signal for the frequency band is recognizable, and which determines a gain indicating the degree of enhancement to be applied to the speech signal in accordance with the signal-to-noise ratio of the selected frequency band; and an enhancing unit which amplifies an amplitude component of a frequency domain signal in each frequency band in accordance with the gain, and which corrects the amplitude component of the frequency domain signal by subtracting the noise component from the amplitude component in each frequency band.

Abstract translation: 语音增强装置包括：噪声估计单元，其针对每个频带估计包含在语音信号中的噪声分量; 信噪比计算单元，针对每个频带计算信噪比; 增益计算单元，其选择其计算的信噪比指示包含在该频带的语音信号中的信号分量是可识别的频带，并且其确定指示应用于语音的增强程度的增益 信号根据所选频带的信噪比; 以及增强单元，其根据增益放大每个频带中的频域信号的幅度分量，并且通过从每个频带中的振幅分量中减去噪声分量来校正频域信号的幅度分量。

公开(公告)号：EP2608201A2

公开(公告)日：2013-06-26

申请号：EP12194568.7

申请日：2012-11-28

Applicant: FUJITSU LIMITED

Inventor： Matsuo, Naoshi

IPC: G10L25/84

CPC classification number: H04R3/005 ,  G10L25/84 ,  G10L2021/02168 ,  H04B15/00 ,  H04R1/406 ,  H04R2201/403 ,  H04R2410/07 ,  H04R2430/20 ,  H04R2499/11

Abstract: A signal processing apparatus includes an adder that acquires a plurality of input signals from a plurality of microphones and calculates an added value obtained by adding the input signals together, a subtracter that acquires a plurality of input signals from the plurality of microphones and calculates a subtracted value obtained by subtracting one input signal from the other input signal, and a determination unit that determines whether noise is included in the input signals based on the added value and the subtracted value.

Abstract translation: 信号处理装置包括：加法器，其从多个麦克风获取多个输入信号，并计算通过将输入信号相加在一起而获得的相加值;减法器，其从多个麦克风获取多个输入信号，并计算减去的 通过从另一输入信号中减去一个输入信号而获得的值;以及确定单元，其基于所述相加值和所述相减值来确定所述输入信号中是否包括噪声。

公开(公告)号：EP2466581A3

公开(公告)日：2012-10-24

申请号：EP11193313.1

申请日：2011-12-13

Applicant: Fujitsu Limited

Inventor： Matsuo, Naoshi

IPC: G10L21/02

CPC classification number: G10L21/0208 ,  G10L21/0224 ,  G10L2021/02165 ,  H04R3/005 ,  H04R5/00

Abstract: A sound processing apparatus includes a first calculator (130R) that calculates a first power based on a first signal received by a first microphone (110R); a second calculator (130L) that calculates a second power based on a second signal received by a second microphone (110L); a gain calculator (140) that calculates a gain on the basis of the ratio of the first power to the second power; and a multiplier (160) that processes the second signal using the gain calculated by the gain calculator.

Abstract translation: 声音处理设备包括：第一计算器（130R），其基于由第一麦克风（110R）接收的第一信号来计算第一功率; 第二计算器（130L），其基于由第二麦克风（110L）接收到的第二信号来计算第二功率; 增益计算器（140），其基于第一功率与第二功率的比率来计算增益; 以及使用由增益计算器计算的增益处理第二信号的乘法器（160）。

公开(公告)号：EP3276621B1

公开(公告)日：2020-05-13

申请号：EP17178684.1

申请日：2017-06-29

Applicant: Fujitsu Limited

Inventor： Matsuo, Naoshi

IPC: G10L21/0232

公开(公告)号：EP3438977B1

公开(公告)日：2020-01-29

申请号：EP18194750.8

申请日：2017-05-29

Applicant: FUJITSU LIMITED

Inventor： Matsuo, Naoshi

IPC: G10L21/0208 ,  H03G3/32 ,  H03G3/34 ,  G10L21/0216 ,  G10L21/0316 ,  G10L21/0224 ,  G10L25/06

公开(公告)号：EP3276621A1

公开(公告)日：2018-01-31

申请号：EP17178684.1

申请日：2017-06-29

Applicant: Fujitsu Limited

Inventor： Matsuo, Naoshi

IPC: G10L21/0232

Abstract: A noise suppression device including: a processor configured to: divide a voice signal into frames such that two successive frames overlap each other; compute a frequency spectrum for the voice signal; remove a noise component from an amplitude component of the frequency spectrum to compute a noise suppression amplitude component; compare amplitude components or noise suppression amplitude components for each pair of successive frames to compute a comparison value for each frequency; compute a gain according to the comparison value for each frequency; compute a corrected amplitude component for each frequency by multiplying the noise suppression amplitude component by the corresponding gain; and compute a corrected voice signal based on the corrected amplitude component for each frequency.

Abstract translation: 1。一种噪声抑制装置，包括：处理器，被配置为：将语音信号划分成帧，使得两个连续的帧彼此重叠; 计算语音信号的频谱; 从频谱的幅度分量中去除噪声分量以计算噪声抑制幅度分量; 比较每对连续帧的幅度分量或噪声抑制幅度分量以计算每个频率的比较值; 根据每个频率的比较值计算增益; 通过将噪声抑制幅度分量乘以相应的增益来计算每个频率的校正幅度分量; 并且基于每个频率的经校正的幅度分量来计算经校正的语音信号。

公开(公告)号：EP3147901A1

公开(公告)日：2017-03-29

申请号：EP16185469.0

申请日：2016-08-24

Applicant: FUJITSU LIMITED

Inventor： Matsuo, Naoshi

IPC: G10L21/0216

CPC classification number: G10L25/93 ,  G10L15/02 ,  G10L15/20 ,  G10L21/0216 ,  G10L25/78 ,  G10L25/87 ,  G10L2021/02165 ,  G10L2021/02168

Abstract: An audio signal processing device that includes: a processor configured to execute a procedure, the procedure comprising: detecting a speech segment of an audio signal; suppressing noise in the audio signal; and adjusting an amount of suppression of noise such that the amount of suppression during a specific period, which starts from a position based on a terminal end of the detected speech segment and is a period shorter than a period spanning from the terminal end of the detected speech segment to a starting end of a next speech segment, becomes greater than in other segments, and a memory configured to store audio signals before and after noise suppression and the amount of suppression before and after adjustment.

Abstract translation: 一种音频信号处理装置，并包括：被配置为执行一个过程，该过程包括处理器：检测音频信号的语音段; 抑制所述音频信号的噪声; 和调整达噪声的抑制检查确实抑制在特定期间的量，这从基于检测到的语音段的末端的位置开始，并且周期比一个周期从所检测的终端跨越短 语音段到下一个语音段的起始端，变得比在其它段时，和存储器，被配置之前和噪声抑制和抑制的前和调整后的量之后存储的音频信号。

公开(公告)号：EP2988301A2

公开(公告)日：2016-02-24

申请号：EP15174037.0

申请日：2015-06-26

Applicant: FUJITSU LIMITED

Inventor： Matsuo, Naoshi

IPC: G10L21/0208

Abstract: An echo suppression device includes a processor, the device includes a suppressing unit configured to generate a corrected sound signal by suppressing an echo signal representing an echo generated by collecting, by a sound input unit, a sound arising from a reproduction sound signal reproduced by a sound output unit; a distortion suppression gain deciding unit configured to obtain a gain to attenuate the corrected sound signal according to a degree of distortion of the echo signal with which intensity of the echo signal non-linearly changes with respect to an intensity change of the reproduction sound signal; and a distortion correcting unit configured to suppress the corrected sound signal according to the gain.