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19 条记录 (耗时 0.028 秒)

    Approximation of recursive least squares equalization
    5.
    发明授权
    Approximation of recursive least squares equalization 有权

    公开(公告)号：US11239929B1

    公开(公告)日：2022-02-01

    申请号：US17203332

    申请日：2021-03-16

    申请人： Ramin Babaee ,  Shahab Oveis Gharan ,  Martin Bouchard ,  Kim B. Roberts

    发明人： Ramin Babaee ,  Shahab Oveis Gharan ,  Martin Bouchard ,  Kim B. Roberts

    IPC分类号： H04B3/46 ,  H04B17/318

    摘要： A receiver is configured to detect, at a communication interface, a received signal that suffers from degradations incurred over a communication channel. The receiver applies an adaptive filter to a series of received blocks of a digital representation of the received signal, thereby generating respective filtered blocks, where each received block represents 2N frequency bins, and where N is a positive integer. The receiver calculates coefficients for use by the adaptive filter on a jth received block as a function of (i) error estimates associated with an (j−D−1)th filtered block, where D is a positive integer representing a number of blocks, and where j is a positive integer greater than (D−1); and (ii) an inverse of an approximate covariance matrix associated with the (j−D−1)th received block, where the approximate covariance matrix is a diagonal matrix of size L×L, and where L is a positive integer lower than 2N.

    Feedback equalization with delay compensation
    6.
    发明授权
    Feedback equalization with delay compensation 有权

    公开(公告)号：US11233568B1

    公开(公告)日：2022-01-25

    申请号：US17090135

    申请日：2020-11-05

    申请人： Shahab Oveis Gharan ,  Ramin Babaee ,  Martin Bouchard ,  Kim B. Roberts

    发明人： Shahab Oveis Gharan ,  Ramin Babaee ,  Martin Bouchard ,  Kim B. Roberts

    IPC分类号： H04B10/06 ,  H04B10/2507 ,  H04B10/2569 ,  H04B10/67 ,  H04B10/532 ,  H04B10/69

    摘要： A receiver is configured to detect, at a communication interface, a received signal that suffers from degradations incurred over a communication channel. The receiver applies an adaptive filter to a series of received blocks of a digital representation of the received signal, thereby generating respective filtered blocks. The receiver calculates coefficients for use by the adaptive filter on an jth received block as a function of (i) error estimates associated with an (j−D−1)th filtered block, where D is a positive integer representing a number of blocks, and where j is a positive integer greater than (D−1); and (ii) delay compensation terms dependent on an estimate of a difference between coefficients used by the adaptive filter on an (j−D−1)th received block and coefficients used by the adaptive filter on an (j−1)th received block

    SPARSE DATA COMPRESSION
    7.
    发明申请
    SPARSE DATA COMPRESSION 失效
    稀疏数据压缩

    公开(公告)号：US20120053948A1

    公开(公告)日：2012-03-01

    申请号：US13216295

    申请日：2011-08-24

    申请人： Frederic Mustiere ,  Hossein Najaf-Zadeh ,  Ramin Pishehvar ,  Hassan Lahdili ,  Louis Thibault ,  Martin Bouchard

    发明人： Frederic Mustiere ,  Hossein Najaf-Zadeh ,  Ramin Pishehvar ,  Hassan Lahdili ,  Louis Thibault ,  Martin Bouchard

    IPC分类号： G10L19/00 ,  H03M7/30

    CPC分类号： H03M7/30

    摘要： The invention relates to compressing of sparse data sets contains sequences of data values and position information therefor. The position information may be in the form of position indices defining active positions of the data values in a sparse vector of length N. The position information is encoded into the data values by adjusting one or more of the data values within a pre-defined tolerance range, so that a pre-defined mapping function of the data values and their positions is close to a target value. In one embodiment, the mapping function is defined using a sub-set of N filler values which elements are used to fill empty positions in the input sparse data vector. At the decoder, the correct data positions are identified by searching though possible sub-sets of filler values.

    摘要翻译： 本发明涉及压缩稀疏数据集包含数据值序列和位置信息。 位置信息可以是以长度N的稀疏向量定义数据值的活动位置的位置索引的形式。通过将一个或多个数据值调整在预定公差内，将位置信息编码为数据值 范围，使得数据值及其位置的预定义映射函数接近目标值。 在一个实施例中，使用N个填充值的子集定义映射函数，该子集用于填充输入稀疏数据向量中的空白位置。 在解码器处，通过搜索填充值可能的子集来识别正确的数据位置。

    Shut-down and start-up procedures of an electrolytic cell
    8.
    发明授权
    Shut-down and start-up procedures of an electrolytic cell 有权
    电解池的关闭和启动程序

    公开(公告)号：US08123928B2

    公开(公告)日：2012-02-28

    申请号：US12645197

    申请日：2009-12-22

    申请人： Robert Cayouette ,  Martin Bouchard ,  Jacques Fortin

    发明人： Robert Cayouette ,  Martin Bouchard ,  Jacques Fortin

    IPC分类号： C25C3/20 ,  C25C3/06

    CPC分类号： C25C3/06 ,  C25C3/20

    摘要： A process for shutting down an operating electrolytic cell for the production of aluminium is described. The process includes: lowering anodes until a lower portion of the anodes is immersed in an aluminium layer; allowing the aluminium layer and an electrolyte bath to cool down with the lower portion of the anodes immersed in the aluminium layer; determining if the electrolyte bath is solidified, and if the electrolyte bath is solidified, raising the anodes before solidification of the aluminium layer to create a space between the solidified electrolyte bath and the anodes and the aluminium layer.

    摘要翻译： 描述了一种关闭用于生产铝的工作电解池的方法。 该方法包括：降低阳极，直到阳极的下部浸入铝层中; 允许铝层和电解液槽与浸在铝层中的阳极的下部冷却下来; 确定电解质浴是否固化，并且如果电解质浴固化，则在铝层凝固之前升高阳极以在固化的电解液浴和阳极和铝层之间形成空间。

    NETWORK APPARATUS ENABLING ROAMING ACROSS SUBNETS
    9.
    发明申请
    NETWORK APPARATUS ENABLING ROAMING ACROSS SUBNETS 有权
    网络设备通过子网启用漫游

    公开(公告)号：US20120039230A1

    公开(公告)日：2012-02-16

    申请号：US13198084

    申请日：2011-08-04

    申请人： Richard H. Blanchette ,  Martin Bouchard ,  Anil Gupta ,  Yannick Koehler ,  Gilbert Moineau ,  Fréderic D. Mouveaux ,  Roger D. Sands ,  Pierre Trudeau

    发明人： Richard H. Blanchette ,  Martin Bouchard ,  Anil Gupta ,  Yannick Koehler ,  Gilbert Moineau ,  Fréderic D. Mouveaux ,  Roger D. Sands ,  Pierre Trudeau

    IPC分类号： H04W40/20 ,  H04W4/06

    CPC分类号： H04W8/02 ,  H04L45/66 ,  H04W40/36 ,  H04W80/02 ,  H04W80/04

    摘要： To enable a network apparatus to detect L3 roaming users and to take appropriate forwarding actions, L3 knowledge is introduced inside an L2 bridge forwarding table in the network apparatus. As a client moves from a subnet associated with a first network element to a subnet associated with the network apparatus, a determination is made regarding whether the client is roaming by evaluating a source IP address within a L3 packet header within a first frame received at the network apparatus. If, as a result of the evaluating step, it is determined that the client is roaming, the L2 bridge forwarding table is configured to include a source MAC address of the client together with information identifying a destination interface for use in directing client data traffic back towards the subnet associated with the first network element.

    摘要翻译： 为了使网络设备能够检测L3漫游用户并采取适当的转发动作，在网络设备的L2桥转发表中引入L3知识。 当客户端从与第一网元相关联的子网移动到与网络装置相关联的子网时，通过评估在第一帧中接收到的第一帧内的L3分组报头内的源IP地址来确定客户端是否正在漫游 网络设备 如果作为评估步骤的结果，确定客户端正在漫游，则L2桥转发表被配置为包括客户端的源MAC地址以及标识目的地接口的信息，以用于将客户端数据业务引导回来 朝向与第一网络元件相关联的子网。

    METHOD AND SYSTEM FOR A MULTI-MICROPHONE NOISE REDUCTION
    10.
    发明申请
    METHOD AND SYSTEM FOR A MULTI-MICROPHONE NOISE REDUCTION 有权
    用于多麦克风噪声减少的方法和系统

    公开(公告)号：US20110305345A1

    公开(公告)日：2011-12-15

    申请号：US13147603

    申请日：2010-02-03

    申请人： Martin Bouchard ,  Homayoun Kamkar Parsi

    发明人： Martin Bouchard ,  Homayoun Kamkar Parsi

    IPC分类号： H04R25/00 ,  G10L21/02 ,  H04B15/00

    CPC分类号： G10L21/0208 ,  G10L2021/02166 ,  H04R1/1083 ,  H04R25/43 ,  H04R2225/43 ,  H04R2410/01 ,  H04R2460/01

    摘要： A method for a multi microphone noise reduction in a complex noisy environment is proposed. A left and a right noise power spectral density for a left and a right noise input frame is estimated for computing a diffuse noise gain. A target speech power spectral density is extracted from the noise input frame. A directional noise gain is calculated from the target speech power spectral density and the noise power spectral density. The noisy input frame is filtered by Kalman filtering method. A Kalman based gain is generated from the Kalman filtered noisy frame and the noise power spectral density. A spectral enhancement gain is computed by combining the diffuse noise gain, the directional noise gain, and the Kalman based gain. The method reduces different combinations of diverse background noise and increases speech intelligibility, while guaranteeing to preserve the interaural cues of the target speech and directional background noises.

    摘要翻译： 提出了一种复杂嘈杂环境中多麦克风降噪的方法。 估计左和右噪声输入帧的左和右噪声功率谱密度用于计算漫反射噪声增益。 从噪声输入帧提取目标语音功率谱密度。 根据目标语音功率谱密度和噪声功率谱密度计算定向噪声增益。 噪声输入帧通过卡尔曼滤波法滤波。 从卡尔曼滤波噪声帧和噪声功率谱密度产生基于卡尔曼的增益。 通过组合漫射噪声增益，方向噪声增益和基于卡尔曼的增益来计算频谱增强增益。 该方法减少了不同背景噪声的不同组合，增加了语音清晰度，同时保证了目标语音和定向背景噪声的昼夜线索。