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1. 发明授权

US08942976B2 Method and device for noise reduction control using microphone array 有权
标题翻译：使用麦克风阵列进行降噪控制的方法和装置
公开(公告)号：US08942976B2
公开(公告)日：2015-01-27
申请号：US13499948
申请日：2010-12-15
申请人： Bo Li , Shasha Lou , Song Li
发明人： Bo Li , Shasha Lou , Song Li
IPC分类号： G10L21/00 , G10L21/0208 , G10L21/0216
CPC分类号： G10L21/0208 , G10L2021/02166
摘要： The present invention provides a noise reduction control method using a microphone array and a noise reduction control device using a microphone array wherein the method comprises the steps of: S1: collecting, by the microphone array, acoustic signals; S2: estimating incidence angles of all acoustic signals of the microphone array; S3: conducting a statistics on signal components according to incidence angles; S4: determining a parameter α from a ratio of noise components according to the statistical result and using the parameter α as a control parameter for controlling an adaptive filter. With the present invention, space position information of the sound is obtained directly with the microphone array to control update of the adaptive filter more accurately, so as to eliminate noise, enhance SNR and protect speech quality well at the same time.
摘要翻译：本发明提供使用麦克风阵列的降噪控制方法和使用麦克风阵列的降噪控制装置，其中该方法包括以下步骤：S1：由麦克风阵列收集声信号; S2：估计麦克风阵列的所有声学信号的入射角; S3：根据入射角进行信号分量统计; S4：根据统计结果根据噪声分量的比率确定参数α，并使用参数α作为控制自适应滤波器的控制参数。利用本发明，通过麦克风阵列直接获得声音的空间位置信息，以更精确地控制自适应滤波器的更新，从而同时消除噪声，提高SNR并保护语音质量。

2. 发明申请

US20140141724A1 NOISE CANCELING SYSTEM AND METHOD, SMART CONTROL METHOD AND DEVICE AND COMMUNICATION EQUIPMENT 有权
标题翻译：噪声消除系统和方法，智能控制方法和设备和通信设备
公开(公告)号：US20140141724A1
公开(公告)日：2014-05-22
申请号：US14119611
申请日：2011-11-08
申请人： Song Liu , Jian Zhao , Shasha Lou
发明人： Song Liu , Jian Zhao , Shasha Lou
IPC分类号： H04B1/12
CPC分类号： H04B1/12 , H04R1/1083 , H04R3/02 , H04R2410/05 , H04R2460/01 , H04R2499/13
摘要： The present invention discloses a noise canceling system and method, a smart control method and device and a communication equipment. Said smart control method includes: when it is detected there is no voice signal output at a receiving end of a communication equipment, receiving an outside noise signal from a reference microphone away from ears and a detection signal from a monitoring microphone near ears; implementing performance analysis on said received outside noise signal and said detection signal to estimate a noise reduction performance curve after said feed-forward active noise cancellation; and regulating parameters of the control circuit in said feed-forward active noise cancellation according to said estimated noise reduction performance curve and the preset noise reduction performance curve to make a difference between said estimated noise reduction performance curve and said preset noise reduction performance curve within a preset range.
摘要翻译：本发明公开了一种噪声消除系统和方法，智能控制方法和装置以及通信设备。所述智能控制方法包括：当检测到通信设备的接收端没有语音信号输出时，从参考麦克风远离耳朵接收外部噪声信号和从耳朵附近的监测麦克风接收的检测信号; 对所述接收的外部噪声信号和所述检测信号执行性能分析，以估计所述前馈有源噪声消除之后的噪声降低性能曲线; 以及根据所述估计的噪声降低性能曲线和预设的降噪性能曲线来调节所述前馈有源噪声消除中的控制电路的参数，以使所述估计的降噪性能曲线与所述预设噪声降低性能曲线之间的差异预设范围。

3. 发明申请

US20120136654A1 Apparatus And Method For Cancelling Echo In Joint Time Domain And Frequency Domain 有权
标题翻译：在联合时域和频域中消除回波的装置和方法
公开(公告)号：US20120136654A1
公开(公告)日：2012-05-31
申请号：US13389367
申请日：2010-12-22
申请人： Shasha Lou , Song Liu
发明人： Shasha Lou , Song Liu
IPC分类号： G10L19/14
CPC分类号： H04M9/082 , H04B3/23
摘要： Disclosed in the present invention is a method for cancelling echo in joint time domain and frequency domain. The method includes: receiving an input receiver signal and an input transmitter signal; implementing echo cancellation on the received transmitter signal, based on the received receiver signal, by using a first echo canceller which is either a time domain echo canceller or a frequency domain echo canceller, to obtain a first echo-cancelled signal; implementing echo cancellation again on the first echo-cancelled signal, based on the received receiver signal, by using a second echo canceller which is the other one of the time domain echo canceller and the frequency domain echo canceller, to obtain a second echo-cancelled signal; wherein, the filter parameters of the second filter of the second echo canceller is updated based on the second echo-cancelled signal, and the first and second echo canceller respectively include the corresponding first and second filters. By using said method in the present invention, fast response to echo reflecting environment can be achieved with little residual echo, thus the effect of echo cancellation is entirely improved.
摘要翻译：在本发明中公开了一种消除联合时域和频域中的回波的方法。该方法包括：接收输入接收机信号和输入发射机信号; 通过使用作为时域回波消除器或频域回波消除器的第一回波消除器，基于接收到的接收机信号，对所接收的发射机信号实现回波消除，以获得第一回声消除信号; 通过使用作为时域回波消除器和频域回波消除器中的另一个的第二回波消除器，基于接收到的接收器信号，在第一回波消除信号上再次实现回波消除，以获得第二回声消除信号; 其中，基于所述第二回波消除信号来更新所述第二回波消除器的所述第二滤波器的滤波器参数，并且所述第一和第二回波消除器分别包括相应的第一和第二滤波器。通过使用本发明的方法，可以实现对回波反射环境的快速响应，具有很少的残余回波，从而完全改善了回声消除的效果。

4. 发明授权

US09379751B2 Noise canceling system and method, smart control method and device and communication equipment 有权
标题翻译：降噪系统及方法，智能控制方法及设备及通讯设备
公开(公告)号：US09379751B2
公开(公告)日：2016-06-28
申请号：US14119611
申请日：2011-11-08
申请人： Song Liu , Jian Zhao , Shasha Lou
发明人： Song Liu , Jian Zhao , Shasha Lou
IPC分类号： A61F11/06 , G10K11/16 , H03B29/00 , H04B1/12 , H04R1/10 , H04R3/02
CPC分类号： H04B1/12 , H04R1/1083 , H04R3/02 , H04R2410/05 , H04R2460/01 , H04R2499/13
摘要： The present invention discloses a noise canceling system and method, a smart control method and device and a communication equipment. Said smart control method includes: when it is detected there is no voice signal output at a receiving end of a communication equipment, receiving an outside noise signal from a reference microphone away from ears and a detection signal from a monitoring microphone near ears; implementing performance analysis on said received outside noise signal and said detection signal to estimate a noise reduction performance curve after said feed-forward active noise cancellation; and regulating parameters of the control circuit in said feed-forward active noise cancellation according to said estimated noise reduction performance curve and the preset noise reduction performance curve to make a difference between said estimated noise reduction performance curve and said preset noise reduction performance curve within a preset range.
摘要翻译：本发明公开了一种噪声消除系统和方法，智能控制方法和装置以及通信设备。所述智能控制方法包括：当检测到通信设备的接收端没有语音信号输出时，从参考麦克风远离耳朵接收外部噪声信号和从耳朵附近的监测麦克风接收的检测信号; 对所述接收的外部噪声信号和所述检测信号执行性能分析，以估计所述前馈有源噪声消除之后的噪声降低性能曲线; 以及根据所述估计的噪声降低性能曲线和预设的降噪性能曲线来调节所述前馈有源噪声消除中的控制电路的参数，以使所述估计的降噪性能曲线与所述预设噪声降低性能曲线之间的差异预设范围。

5. 发明申请

US20130151247A1 METHOD AND DEVICE FOR SUPPRESSING RESIDUAL ECHOES 有权
标题翻译：用于抑制残余电子的方法和装置
公开(公告)号：US20130151247A1
公开(公告)日：2013-06-13
申请号：US13642661
申请日：2011-10-24
申请人： Shasha Lou , Bo Li , Song Liu
发明人： Shasha Lou , Bo Li , Song Liu
IPC分类号： G10L21/0216
CPC分类号： G10L21/0216 , G10L15/20 , G10L2021/02082 , H04M9/082 , H04R3/005 , H04R2201/109 , H04R2499/13
摘要： The present invention discloses a method and a device for suppressing residual echoes. The method comprises: performing adaptive filtering on M transmitter signals respectively to obtain M adaptive filtered signals; performing array-filtering on the M−1 adaptive filtered signals other than the first adaptive filtered signal to obtain M−1 array-filter output signals; subtracting each of the M−1 array-filter output signals from the first adaptive filtered signal respectively to obtain M−1 difference signals, performing time-domain/frequency-domain conversion on the M−1 difference signals respectively and selecting one of the frequency-domain signals that has the least energy; performing time-domain/frequency-domain conversion on the first adaptive filtered signal and the Mth adaptive filtered signal and then performing speech probability filtering on the converted first adaptive filtered signal and the converted Mth adaptive filtered signal to obtain one frequency-domain speech probability signal; and multiplying the frequency-domain speech probability signal with the selected signal that has the least energy, and performing frequency-domain/time-domain conversion on the multiplication result to obtain a signal as a transmitter output signal. The technical solutions of the present invention can suppress the residual echoes effectively without impairing near end speech.
摘要翻译：本发明公开了一种用于抑制残余回波的方法和装置。该方法包括：分别对M个发射机信号执行自适应滤波，以获得M个自适应滤波信号; 对除了第一自适应滤波信号之外的M-1个自适应滤波信号执行阵列滤波以获得M-1个阵列滤波器输出信号; 分别从第一自适应滤波信号中减去M-1阵列滤波器输出信号中的每一个以获得M-1个差分信号，分别对M-1个差信号执行时域/频域转换，并选择频率具有最少能量的域信号; 对第一自适应滤波信号和第M个自适应滤波信号执行时域/频域转换，然后对经转换的第一自适应滤波信号和转换的第M个自适应滤波信号执行语音概率滤波，以获得一个频域语音概率信号 ; 并且将频域语音概率信号与所选择的具有最少能量的信号相乘，并对乘法结果执行频域/时域转换，以获得作为发射机输出信号的信号。本发明的技术方案可以有效地抑制残留回波，而不损害近端语音。

6. 发明授权

US09685172B2 Method and device for suppressing residual echoes based on inverse transmitter receiver distance and delay for speech signals directly incident on a transmitter array 有权
公开(公告)号：US09685172B2
公开(公告)日：2017-06-20
申请号：US13642661
申请日：2011-10-24
申请人： Shasha Lou , Bo Li , Song Liu
发明人： Shasha Lou , Bo Li , Song Liu
IPC分类号： H04M9/08 , G10L15/00 , G10L21/0216 , G10L15/20 , H04R3/00 , G10L21/0208
CPC分类号： G10L21/0216 , G10L15/20 , G10L2021/02082 , H04M9/082 , H04R3/005 , H04R2201/109 , H04R2499/13
摘要： The present invention discloses a method and a device for suppressing residual echoes. The method comprises: performing adaptive filtering on M transmitter signals respectively to obtain M adaptive filtered signals; performing array-filtering 5 on the M−1 adaptive filtered signals other than the first adaptive filtered signal to obtain M−1 array-filter output signals by considering relative positions of the receiver and each of the transmitters and the time delay attributed to distances between the transmitters and the receiver; subtracting each of the M−1 array-filter output signals from the first adaptive filtered signal respectively to obtain M−1 difference signals, performing time-domain/frequency-domain conversion on the M−1 difference signals respectively and selecting one of the frequency-domain signals that has the least energy; performing time-domain/frequency-domain conversion on the first adaptive filtered signal and the Mth adaptive filtered signal and then performing speech probability filtering on the converted first adaptive filtered signal and the converted Mth adaptive filtered signal to obtain one frequency-domain speech probability signal; and multiplying the frequency-domain speech probability signal with the selected signal that has the least energy, and performing frequency-domain/time-domain conversion on the multiplication result to obtain a signal as a transmitter output signal. The technical solutions of the present invention can suppress the residual echoes effectively without impairing near end speech.

7. 发明申请

US20120197638A1 Method and Device for Noise Reduction Control Using Microphone Array 有权
标题翻译：使用麦克风阵列降噪控制的方法和装置
公开(公告)号：US20120197638A1
公开(公告)日：2012-08-02
申请号：US13499948
申请日：2010-12-15
申请人： Bo Li , Shasha Lou , Song Li
发明人： Bo Li , Shasha Lou , Song Li
IPC分类号： G10L21/02 , G10K11/16
CPC分类号： G10L21/0208 , G10L2021/02166
摘要： The present invention provides a noise reduction control method using a microphone array and a noise reduction control device using a microphone array wherein the method comprises the steps of: S1: collecting, by the microphone array, acoustic signals; S2: estimating incidence angles of all acoustic signals of the microphone array; S3: conducting a statistics on signal components according to incidence angles; S4: determining a parameter α from a ratio of noise components according to the statistical result and using the parameter α as a control parameter for controlling an adaptive filter. With the present invention, space position information of the sound is obtained directly with the microphone array to control update of the adaptive filter more accurately, so as to eliminate noise, enhance SNR and protect speech quality well at the same time.
摘要翻译：本发明提供使用麦克风阵列的降噪控制方法和使用麦克风阵列的降噪控制装置，其中该方法包括以下步骤：S1：由麦克风阵列收集声信号; S2：估计麦克风阵列的所有声学信号的入射角; S3：根据入射角进行信号分量统计; S4：根据统计结果根据噪声分量的比率确定参数α，并使用参数α作为控制自适应滤波器的控制参数。利用本发明，通过麦克风阵列直接获得声音的空间位置信息，以更精确地控制自适应滤波器的更新，从而同时消除噪声，提高SNR并保护语音质量。

8. 发明授权

US09136905B2 Multi-receiving terminal echo cancellation method and system 有权
标题翻译：多接收终端回波消除方法及系统
公开(公告)号：US09136905B2
公开(公告)日：2015-09-15
申请号：US13816542
申请日：2012-04-09
申请人： Shasha Lou
发明人： Shasha Lou
IPC分类号： H04B3/20 , H04M9/08 , H04B3/23
CPC分类号： H04B3/20 , H04B3/231 , H04M9/082
摘要： Disclosed is a method and system for multi-receiving terminal echo cancellation Echo filters performs echo filtering on receiving terminal signals in M channels to obtain filtered receiving terminal signals in M channels. The filtered receiving terminal signals in M channels are subtracted from a transmitting terminal signal to obtain a system output signal in which receiving terminal echoes have been cancelled. The receiving terminal signals in M channels are buffered. A decorrelation matrix according to each of the receiving terminal signals in M channels is calculated. The decorrelation matrix decomposes the buffered receiving terminal signals in M channels into decorrelated receiving terminal signals in M channels. Update amounts of the echo filters are calculated according to the decorrelation matrix, the decorrelated receiving terminal signals in M channels and the system output signal that is fed back.
摘要翻译：公开了一种用于多接收终端回波消除的方法和系统。回波滤波器对M个信道中的接收终端信号执行回波滤波，以获得M个信道中的滤波接收终端信号。从发送终端信号中减去M个信道中的经过滤波的接收终端信号，以获得接收终端回波被取消的系统输出信号。 M通道中的接收终端信号被缓冲。计算根据M个信道中的每个接收终端信号的解相关矩阵。解相关矩阵将M个信道中的缓冲接收终端信号分解成M个信道中的去相关的接收终端信号。回波滤波器的更新量根据去相关矩阵，M个信道中的相关接收终端信号和反馈的系统输出信号计算。

9. 发明授权

US08868416B2 Apparatus and method for cancelling echo in joint time domain and frequency domain 有权
标题翻译：联合时域和频域消除回波的装置和方法
公开(公告)号：US08868416B2
公开(公告)日：2014-10-21
申请号：US13389367
申请日：2010-12-22
申请人： Shasha Lou , Song Liu
发明人： Shasha Lou , Song Liu
IPC分类号： G10L21/00 , G10L21/02 , H04M9/08 , H04B3/23
CPC分类号： H04M9/082 , H04B3/23
摘要： Disclosed in the present invention is a method for cancelling echo in joint time domain and frequency domain. The method includes: receiving an input receiver signal and an input transmitter signal; implementing echo cancellation on the received transmitter signal, based on the received receiver signal, by using a first echo canceller which is either a time domain echo canceller or a frequency domain echo canceller, to obtain a first echo-cancelled signal; implementing echo cancellation again on the first echo-cancelled signal, based on the received receiver signal, by using a second echo canceller which is the other one of the time domain echo canceller and the frequency domain echo canceller, to obtain a second echo-cancelled signal; wherein, and the first and second echo canceller respectively include the corresponding first and second filters, and the filter parameter of the second filter is updated based on the input receiver signal, the second echo-cancelled signal and the filter parameter of the first filter. By using said method in the present invention, fast response to echo reflecting environment can be achieved with little residual echo, thus the effect of echo cancellation is entirely improved.
摘要翻译：在本发明中公开了一种消除联合时域和频域中的回波的方法。该方法包括：接收输入接收机信号和输入发射机信号; 通过使用作为时域回波消除器或频域回波消除器的第一回波消除器，基于接收到的接收机信号，对所接收的发射机信号实现回波消除，以获得第一回声消除信号; 通过使用作为时域回波消除器和频域回波消除器中的另一个的第二回波消除器，基于接收到的接收器信号，在第一回波消除信号上再次实现回波消除，以获得第二回声消除信号; 其中，第一和第二回波消除器分别包括对应的第一和第二滤波器，并且基于输入的接收机信号，第二回波消除信号和第一滤波器的滤波器参数来更新第二滤波器的滤波器参数。通过使用本发明的方法，可以实现对回波反射环境的快速响应，具有很少的残余回波，从而完全改善了回声消除的效果。

10. 发明申请

US20130243183A1 MULTI-RECEIVING TERMINAL ECHO CANCELLATION METHOD AND SYSTEM 有权
标题翻译：多收端终端取消方法和系统
公开(公告)号：US20130243183A1
公开(公告)日：2013-09-19
申请号：US13816542
申请日：2012-04-09
申请人： Shasha Lou
发明人： Shasha Lou
IPC分类号： H04B3/20
CPC分类号： H04B3/20 , H04B3/231 , H04M9/082
摘要： A multi-receiving terminal echo cancellation method and a multi-receiving terminal echo cancellation system are disclosed. The present invention performs echo filtering on receiving terminal signals in M channels by means of echo filters to obtain filtered receiving terminal signals in M channels, and subtracts the filtered receiving terminal signals in M channels from a sending terminal signal to obtain a system output signal in which receiving terminal echoes have been cancelled; and at the same time, the present invention buffers the receiving terminal signals in M channels by means of buffers, calculates a decorrelation matrix according to each of the receiving terminal signals in M channels that are buffered within preset length, decomposes the buffered receiving terminal signals in M channels into decorrelated receiving terminal signals in M channels by means of the decorrelation matrix, and calculates update amounts of the echo filters according to the decorrelation matrix, the decorrelated receiving terminal signals in M channels and the system output signal that is fed back. The technical solutions of the present invention can support the situation of two or more receiving terminals, and are suitable for situations in which the correlation between a plurality of receiving terminal signals is variable.
摘要翻译：公开了一种多接收终端回波消除方法和多接收终端回波消除系统。本发明通过回波滤波器对M个信道中的接收终端信号进行回波滤波，以在M个信道中获得滤波的接收终端信号，并从发送终端信号中减去M个信道中的经滤波的接收终端信号，以获得系统输出信号接收终端回波已被取消; 同时本发明通过缓冲器缓冲M个信道中的接收终端信号，根据在预设长度内缓冲的M个信道中的每个接收终端信号计算去相关矩阵，分解缓冲的接收终端信号在M个通道中通过解相关矩阵在M个信道中解相关的接收终端信号，并根据去相关矩阵，M个信道中的解相关的接收终端信号和反馈的系统输出信号来计算回波滤波器的更新量。本发明的技术方案可以支持两个以上接收终端的情况，适用于多个接收终端信号之间的相关性是可变的情况。

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