公开(公告)号：US09830900B2

公开(公告)日：2017-11-28

申请号：US13984136

申请日：2012-03-29

申请人： Atsuyoshi Yano ,  Tomoharu Awano

发明人： Atsuyoshi Yano ,  Tomoharu Awano

IPC分类号： H03G5/16 ,  H04B3/23 ,  H04R3/02 ,  G10K11/175 ,  G10K11/178 ,  H04M9/08 ,  H03H21/00

CPC分类号： G10K11/175 ,  G10K11/178 ,  H03G5/165 ,  H04B3/235 ,  H04R3/02

摘要： A variable update step size is determined in proportion to a magnitude ratio or magnitude difference between a first residual signal and a second residual signal. The first residual signal is obtained by using adaptive filter coefficient sequence, where the adaptive filter coefficient sequence has been obtained in previous operations of the adaptive equalizer. The second residual signal is obtained by using a prior update adaptive filter coefficient sequence, where the prior update adaptive filter coefficient sequence is obtained by performing a coefficient update with an arbitrary prior update step size on the adaptive filter coefficient sequence having been obtained in previous operations of the adaptive equalizer.

公开(公告)号：US09210502B2

公开(公告)日：2015-12-08

申请号：US14361835

申请日：2012-04-25

申请人： Takashi Sudo ,  Atsuyoshi Yano ,  Tomoharu Awano

发明人： Takashi Sudo ,  Atsuyoshi Yano ,  Tomoharu Awano

IPC分类号： H04B3/20 ,  H04R3/00 ,  H04M9/08

CPC分类号： H04R3/002 ,  H04M9/082

摘要： An echo cancelling device splits a low-band signal through LPFs having characteristics which do not cause aliasing during downsampling of downsamplers, and splits a high-band signal through HPFs having characteristics which do not cause aliasing during downsampling of downsamplers. The echo canceling device generates a mid-band signal by subtracting the low-band signal and the high-band signal from a pre-split signal by adder-subtractors, and cancels an echo on a band-by-band basis.

摘要翻译： 回波消除装置通过具有在下采样器的下采样期间不引起混叠的特性的LPF分离低频带信号，并且通过具有在下采样器的下采样中不引起混叠的特征的HPF分离高频带信号。 回波消除装置通过减法器从预分割信号中减去低频带信号和高频带信号来产生中频信号，并逐个取消回波。

公开(公告)号：US20140286498A1

公开(公告)日：2014-09-25

申请号：US14361835

申请日：2012-04-25

申请人： Takashi Sudo ,  Atsuyoshi Yano ,  Tomoharu Awano

发明人： Takashi Sudo ,  Atsuyoshi Yano ,  Tomoharu Awano

IPC分类号： H04R3/00

CPC分类号： H04R3/002 ,  H04M9/082

摘要： An echo cancelling device splits a low-band signal through LPFs having characteristics which do not cause aliasing during downsampling of downsamplers, and splits a high-band signal through HPFs having characteristics which do not cause aliasing during downsampling of downsamplers. The echo canceling device generates a mid-band signal by subtracting the low-band signal and the high-band signal from a pre-split signal by adder-subtractors, and cancels an echo on a band-by-band basis.

摘要翻译： 回波消除装置通过具有在下采样器的下采样期间不引起混叠的特性的LPF分离低频带信号，并且通过具有在下采样器的下采样中不引起混叠的特征的HPF分离高频带信号。 回波消除装置通过减法器从预分割信号中减去低频带信号和高频带信号来产生中频信号，并逐个取消回波。

公开(公告)号：US09503809B2

公开(公告)日：2016-11-22

申请号：US14411980

申请日：2012-08-06

申请人： Takashi Mikami ,  Tomoharu Awano

发明人： Takashi Mikami ,  Tomoharu Awano

IPC分类号： A61F11/06 ,  H04R1/40 ,  H04R3/00

CPC分类号： H04R1/40 ,  H04R3/00 ,  H04R3/005 ,  H04R2201/403 ,  H04R2499/13

摘要： A beam-forming device includes a first target sound blocker 103 and a second target sound blocker 104 that remove a target signal having a correlation mutually from a first sound signal x1 and a second sound signal x2 which are converted by first and second microphones 101 and 102, a phase synchronizer 105 that synchronizes the phases of the first sound signal x1 and the second sound signal x2 and synthesizes these sound signals by using information acquired when the first target sound blocker 103 removes the target signal, and a noise learner 106 that learns a noise component included in an output signal of the phase synchronizer 105 from signals from which the target signal is removed by the first target sound blocker 103 and the second target sound blocker 104.

摘要翻译： 波束形成装置包括：第一目标声音阻挡器103和第二目标声音阻挡器104，其从由第一和第二麦克风101转换的第一声音信号x1和第二声音信号x2相互相互移除相关的目标信号;以及 102是相位同步器105，其使第一声音信号x1和第二声音信号x2的相位同步，并且通过使用当第一目标声音阻挡器103去除目标信号时获取的信息来合成这些声音信号;以及噪音学习者106， 来自相位同步器105的输出信号的噪声分量来自第一目标声音阻挡器103和第二目标声音阻挡器104从目标信号去除的信号。

公开(公告)号：US20130251169A1

公开(公告)日：2013-09-26

申请号：US13990982

申请日：2012-03-29

申请人： Tomoharu Awano ,  Atsuyoshi Yano ,  Bunkei Matsuoka

发明人： Tomoharu Awano ,  Atsuyoshi Yano ,  Bunkei Matsuoka

IPC分类号： G10K11/16

CPC分类号： G10K11/16 ,  H04M9/082 ,  H04R3/02

摘要： An echo canceler includes a signal-to-echo ratio calculating unit 103 and a residual echo suppressing unit 105. The signal-to-echo ratio calculating unit 103 computes a signal-to-echo ratio SE(n) indicating a ratio of an echo component to a received signal x(n) from a first residual signal and a second residual signal. The first residual signal is obtained using a filter coefficient sequence of an update filter 102, which is obtained up to the previous operation. The second residual signal is obtained using an updated filter coefficient sequence that undergoes a coefficient update which is performed, using an arbitrary update step size μ(n), on the filter coefficient sequence of the update filter 102, which is obtained up to the previous operation. The residual echo suppressing unit 105 suppresses the echo component contained in the microphone input signal in accordance with the signal-to-echo ratio the signal-to-echo ratio calculating unit 103 computes.

摘要翻译： 回波消除器包括信号回波比计算单元103和残留回波抑制单元105.信号与回波比计算单元103计算指示回波比的信号回波比SE（n） 分量到来自第一残差信号和第二残差信号的接收信号x（n）。 使用更新过滤器102的滤波器系数序列获得第一残差信号，该序列是直到先前的操作获得的。 使用更新的滤波器系数序列获得第二残差信号，该更新的滤波器系数序列使用任意更新步长mu（n）对更新过滤器102的滤波器系数序列执行的系数更新，该更新滤波器系数序列直到先前 操作。 残留回波抑制单元105根据信号与回波比计算单元103计算的信号与回波比，抑制麦克风输入信号中包含的回波分量。

公开(公告)号：US09286881B2

公开(公告)日：2016-03-15

申请号：US13990982

申请日：2012-03-29

申请人： Tomoharu Awano ,  Atsuyoshi Yano ,  Bunkei Matsuoka

发明人： Tomoharu Awano ,  Atsuyoshi Yano ,  Bunkei Matsuoka

IPC分类号： H04M9/08 ,  G10K11/16 ,  H04R3/02

CPC分类号： G10K11/16 ,  H04M9/082 ,  H04R3/02

摘要： An echo canceler includes a signal-to-echo ratio calculating unit 103 and a residual echo suppressing unit 105. The signal-to-echo ratio calculating unit 103 computes a signal-to-echo ratio SE(n) indicating a ratio of an echo component to a received signal x(n) from a first residual signal and a second residual signal. The first residual signal is obtained using a filter coefficient sequence of an update filter 102, which is obtained up to the previous operation. The second residual signal is obtained using an updated filter coefficient sequence that undergoes a coefficient update which is performed, using an arbitrary update step size μ(n), on the filter coefficient sequence of the update filter 102, which is obtained up to the previous operation. The residual echo suppressing unit 105 suppresses the echo component contained in the microphone input signal in accordance with the signal-to-echo ratio the signal-to-echo ratio calculating unit 103 computes.

摘要翻译： 回波消除器包括信号回波比计算单元103和残留回波抑制单元105.信号与回波比计算单元103计算指示回波比的信号回波比SE（n） 分量到来自第一残差信号和第二残差信号的接收信号x（n）。 使用更新过滤器102的滤波器系数序列获得第一残差信号，该序列是直到先前的操作获得的。 使用更新的滤波器系数序列获得第二残差信号，该更新的滤波器系数序列使用任意更新步长μ（n）对更新过滤器102的滤波器系数序列执行的系数更新，该更新滤波器系数序列直到先前 操作。 残留回波抑制单元105根据信号与回波比计算单元103计算的信号与回波比，抑制麦克风输入信号中包含的回波分量。

公开(公告)号：US20150181329A1

公开(公告)日：2015-06-25

申请号：US14411980

申请日：2012-08-06

申请人： Takashi Mikami ,  Tomoharu Awano

发明人： Takashi Mikami ,  Tomoharu Awano

IPC分类号： H04R1/40 ,  H04R3/00

CPC分类号： H04R1/40 ,  H04R3/00 ,  H04R3/005 ,  H04R2201/403 ,  H04R2499/13

摘要： A beam-forming device includes a first target sound blocker 103 and a second target sound blocker 104 that remove a target signal having a correlation mutually from a first sound signal x1 and a second sound signal x2 which are converted by first and second microphones 101 and 102, a phase synchronizer 105 that synchronizes the phases of the first sound signal x1 and the second sound signal x2 and synthesizes these sound signals by using information acquired when the first target sound blocker 103 removes the target signal, and a noise learner 106 that learns a noise component included in an output signal of the phase synchronizer 105 from signals from which the target signal is removed by the first target sound blocker 103 and the second target sound blocker 104.

摘要翻译： 波束形成装置包括：第一目标声音阻挡器103和第二目标声音阻挡器104，其从由第一和第二麦克风101转换的第一声音信号x1和第二声音信号x2相互相互移除相关的目标信号;以及 102是相位同步器105，其使第一声音信号x1和第二声音信号x2的相位同步，并且通过使用当第一目标声音阻挡器103去除目标信号时获取的信息来合成这些声音信号;以及噪音学习者106， 来自相位同步器105的输出信号的噪声分量来自第一目标声音阻挡器103和第二目标声音阻挡器104从目标信号去除的信号。

公开(公告)号：US20130315408A1

公开(公告)日：2013-11-28

申请号：US13984136

申请日：2012-03-29

申请人： Atsuyoshi Yano ,  Tomoharu Awano

发明人： Atsuyoshi Yano ,  Tomoharu Awano

IPC分类号： G10K11/175

CPC分类号： G10K11/175 ,  G10K11/178 ,  H03G5/165 ,  H04B3/235 ,  H04R3/02

摘要： A variable update step size is determined in proportion to a magnitude ratio or magnitude difference between a first residual signal and a second residual signal. The first residual signal is obtained by using adaptive filter coefficient sequence, where the adaptive filter coefficient sequence has been obtained in previous operations of the adaptive equalizer. The second residual signal is obtained by using a prior update adaptive filter coefficient sequence, where the prior update adaptive filter coefficient sequence is obtained by performing a coefficient update with an arbitrary prior update step size on the adaptive filter coefficient sequence having been obtained in previous operations of the adaptive equalizer.

摘要翻译： 与第一残差信号和第二残差信号之间的幅度比或幅度差成比例地确定可变更新步长。 通过使用自适应滤波器系数序列获得第一残差信号，其中自适应滤波器系数序列已经在自适应均衡器的先前操作中获得。 通过使用先前更新自适应滤波器系数序列获得第二残差信号，其中先前更新自适应滤波器系数序列是通过在先前操作中获得的自适应滤波器系数序列上执行具有任意先前更新步长的系数更新而获得的 的自适应均衡器。