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57 条记录 (耗时 0.038 秒)

    Signal processing device
    21.
    发明授权
    Signal processing device 有权
    信号处理装置

    公开(公告)号：US08799342B2

    公开(公告)日：2014-08-05

    申请号：US12198488

    申请日：2008-08-26

    申请人： Hirofumi Nakajima ,  Kazuhiro Nakadai ,  Yuji Hasegawa ,  Hiroshi Tsujino

    发明人： Hirofumi Nakajima ,  Kazuhiro Nakadai ,  Yuji Hasegawa ,  Hiroshi Tsujino

    IPC分类号： G06F17/15

    CPC分类号： G06F17/15

    摘要： A device capable of improving the convergence rate and estimation accuracy in estimating a correlation value. According to a signal processing device, since a window length is adjusted in such a manner to reduce an estimated error of a correlation matrix, the convergence rate and estimation accuracy in estimating the correlation matrix and the correlation value as its off-diagonal element can be improved. Then, in such a high-probability condition that the correlation of plural output signals according to a state is estimated with a high degree of precision, signal processing is performed on the plural signals, so that the state can be estimated with a high degree of precision.

    摘要翻译： 一种在估计相关值时能够提高收敛速度和估计精度的装置。 根据信号处理装置，由于以减小相关矩阵的估计误差的方式调整窗口长度，所以估计相关矩阵的收敛速度和估计精度以及相关值作为其对角线元素可以是 改进。 然后，在以高精度估计出多个根据状态的输出信号的相关性的高概率条件下，对多个信号进行信号处理，从而能够以高度的 精确。

    Sound source characteristic determining device
    23.
    发明授权
    Sound source characteristic determining device 有权
    声源特性确定装置

    公开(公告)号：US08290178B2

    公开(公告)日：2012-10-16

    申请号：US12010553

    申请日：2008-01-25

    申请人： Kazuhiro Nakadai ,  Hiroshi Tsujino ,  Hirofumi Nakajima

    发明人： Kazuhiro Nakadai ,  Hiroshi Tsujino ,  Hirofumi Nakajima

    IPC分类号： H04R3/00 ,  G01S3/80

    CPC分类号： H04S7/00 ,  H04R3/005

    摘要： There is provided a sound source characteristic determining device (10) capable of being applied in an environmental where the type of a sound source is unknown. The device includes a plurality of beamformers (21-1 to 21-M) used when a sound source signal generated from a sound source at an arbitrary position in a space is inputted to a plurality of microphones (14-1 to 14-N), for weighting the acoustic signal detected by each of the microphones by using a function for correcting the difference of the sound source signals generated between the microphones and outputting a totaled signal. Each of the beamformers (21-1 to 21-M) contains a function having a unit directivity characteristic corresponding to one arbitrary direction in the space and is arranged for each of the directions corresponding to an arbitrary position in the space and the unit directivity characteristic. The sound source characteristic determining device (10) further includes means (23) for estimating the position and the direction in the space corresponding to the beamformer outputting a maximum value as the position and the direction of the sound source when the microphone (14) detects a sound source signal.

    摘要翻译： 提供了能够应用于声源类型未知的环境中的声源特性确定装置（10）。 当从空间中的任意位置的声源产生的声源信号输入到多个麦克风（14-1至14-N）时，该装置包括多个波束形成器（21-1至21-M） 用于通过使用用于校正在麦克风之间产生的声源信号的差异并输出总计信号的功能来对由每个麦克风检测到的声信号进行加权。 每个波束形成器（21-1至21-M）包含具有对应于该空间中的一个任意方向的单位方向性特性的功能，并且被布置用于与空间中的任意位置相对应的每个方向，并且单位方向特性 。 声源特性确定装置（10）还包括用于估计与波束形成器相对应的空间中的位置和方向的装置（23），其输出最大值作为麦克风（14）检测到的声源的位置和方向 声源信号。

    Neural network element with reinforcement/attenuation learning
    25.
    发明授权
    Neural network element with reinforcement/attenuation learning 有权
    具有加强/衰减学习的神经网络元素

    公开(公告)号：US07664714B2

    公开(公告)日：2010-02-16

    申请号：US11255895

    申请日：2005-10-21

    申请人： Hiroshi Tsujino ,  Nobuaki Miyakawa ,  Gen Matsumoto ,  Ryoji Noyori, legal representative

    发明人： Hiroshi Tsujino ,  Nobuaki Miyakawa ,  Gen Matsumoto

    IPC分类号： G06N3/02

    CPC分类号： G06N3/08 ,  G06N3/049

    摘要： A neural network element, outputting an output signal in response to a plurality of input signals, comprises a history memory for accumulating and storing the plurality of input signals in a temporal order as history values. It also includes an output module for outputting the output signal when an internal state exceeds a predetermined threshold value, the internal state being based on a sum of the product of a plurality of input signals and corresponding coupling coefficients. The history values depend on change of the internal state. The neural network element is configured to subtract a predetermined value from the internal state immediately after the output module fires and performs learning for reinforcing or attenuating the coupling coefficient according to the history values after the output module fires.

    摘要翻译： 输出响应于多个输入信号的输出信号的神经网络元件包括用于以时间顺序累积并存储多个输入信号作为历史值的历史存储器。 它还包括一个输出模块，用于当内部状态超过预定阈值时输出输出信号，内部状态基于多个输入信号的乘积和相应的耦合系数之和。 历史价值取决于内部状态的变化。 神经网络元件被配置为在输出模块触发之后立即从内部状态减去预定值，并且在输出模块触发之后根据历史值执行用于加强或衰减耦合系数的学习。

    SOUND-SOURCE SEPARATION SYSTEM
    27.
    发明申请
    SOUND-SOURCE SEPARATION SYSTEM 有权
    声源分离系统

    公开(公告)号：US20090043588A1

    公开(公告)日：2009-02-12

    申请号：US12187684

    申请日：2008-08-07

    申请人： Ryu Takeda ,  Kazuhiro Nakadai ,  Hiroshi Tsujino ,  Hiroshi Okuno

    发明人： Ryu Takeda ,  Kazuhiro Nakadai ,  Hiroshi Tsujino ,  Hiroshi Okuno

    IPC分类号： G10L21/00

    CPC分类号： G10L21/0272

    摘要： A system capable of reducing the influence of sound reverberation or reflection to improve sound-source separation accuracy. An original signal X(ω,f) is separated from an observed signal Y(ω,f) according to a first model and a second model to extract an unknown signal E(ω,f). According to the first model, the original signal X(ω,f) of the current frame f is represented as a combined signal of known signals S(ω,f−m+1) (m=1 to M) that span a certain number M of current and previous frames. This enables extraction of the unknown signal E(ω,f) without changing the window length while reducing the influence of reverberation or reflection of the known signal S(ω,f) on the observed signal Y(ω,f).

    摘要翻译： 一种能够减少声音混响或反射影响以提高声源分离精度的系统。 根据第一模型和第二模型将原始信号X（ω，f）与观察信号Y（ω，f）分离以提取未知信号E（ω，f）。 根据第一模型，当前帧f的原始信号X（ω，f）被表示为已知信号S（ω，f-m + 1）（m = 1到M）的组合信号， 当前帧和前一帧的M个。 这可以在不改变窗口长度的情况下提取未知信号E（ω，f），同时减少已知信号S（ω，f）的混响或反射对观测信号Y（ω，f）的影响。

    Sound source characteristic determining device
    29.
    发明申请
    Sound source characteristic determining device 有权
    声源特性确定装置

    公开(公告)号：US20080199024A1

    公开(公告)日：2008-08-21

    申请号：US12010553

    申请日：2008-01-25

    申请人： Kazuhiro Nakadai ,  Hiroshi Tsujino ,  Hirofumi Nakajima

    发明人： Kazuhiro Nakadai ,  Hiroshi Tsujino ,  Hirofumi Nakajima

    IPC分类号： H04R3/00

    CPC分类号： H04S7/00 ,  H04R3/005

    摘要： There is provided a sound source characteristic determining device (10) capable of being applied in an environmental where the type of a sound source is unknown. The device includes a plurality of beamformers (21-1 to 21-M) used when a sound source signal generated from a sound source at an arbitrary position in a space is inputted to a plurality of microphones (14-1 to 14-N), for weighting the acoustic signal detected by each of the microphones by using a function for correcting the difference of the sound source signals generated between the microphones and outputting a totaled signal. Each of the beamformers (21-1 to 21-M) contains a function having a unit directivity characteristic corresponding to one arbitrary direction in the space and is arranged for each of the directions corresponding to an arbitrary position in the space and the unit directivity characteristic. The sound source characteristic determining device (10) further includes means (23) for estimating the position and the direction in the space corresponding to the beamformer outputting a maximum value as the position and the direction of the sound source when the microphone (14) detects a sound source signal.

    摘要翻译： 提供了能够应用于声源类型未知的环境中的声源特性确定装置（10）。 当从空间中的任意位置的声源产生的声源信号输入到多个麦克风（14-1至14-N）时，该装置包括多个波束形成器（21-1至21-M） 用于通过使用用于校正在麦克风之间产生的声源信号的差异并输出总计信号的功能来对由每个麦克风检测到的声信号进行加权。 每个波束形成器（21-1至21-M）包含具有对应于该空间中的一个任意方向的单位方向特性的功能，并且被布置用于与空间中的任意位置相对应的每个方向，并且单位方向特性 。 声源特性确定装置（10）还包括用于估计与波束形成器相对应的空间中的位置和方向的装置（23），其输出最大值作为麦克风（14）检测到的声源的位置和方向 声源信号。

    Behavior control apparatus and method
    30.
    发明授权
    Behavior control apparatus and method 有权
    行为控制装置及方法

    公开(公告)号：US07054724B2

    公开(公告)日：2006-05-30

    申请号：US10484147

    申请日：2002-07-16

    申请人： Takamasa Koshizen ,  Hiroshi Tsujino ,  Hideaki Ono

    发明人： Takamasa Koshizen ,  Hiroshi Tsujino ,  Hideaki Ono

    IPC分类号： G05D1/00

    CPC分类号： G05D1/0088

    摘要： The invention relates to a behavior control apparatus and method for autonomously controlling a mobile unit based on visual information in practical application without the needs of a greatdeal of preparation or computational cost and limiting the type of target object. According to one aspect of the invention, a method for controlling behavior of a mobile unit using behavior command is provided. First, sensory inputs are captured and then the motion of the mobile unit is estimated. The portion which includes a target object to be target for behavior of the mobile unit is segregated from the sensory inputs. The target objects extracted from the segregated portion and the location of the target object is acquired. Finally, the mobile unit is controlled based on the location of target object.

    摘要翻译： 本发明涉及一种用于在实际应用中基于视觉信息自主控制移动单元的行为控制装置和方法，而不需要大量准备或计算成本，并限制目标对象的类型。 根据本发明的一个方面，提供了一种使用行为命令来控制移动单元的行为的方法。 首先，捕获感觉输入，然后估计移动单元的运动。 包含目标对象的部分，其目标是针对移动单元的行为与感官输入隔离。 获取从分离部分提取的目标对象和目标对象的位置。 最后，根据目标对象的位置来控制移动单元。