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1. 发明授权

US08184819B2 Microphone array signal enhancement 失效
标题翻译：麦克风阵列信号增强
公开(公告)号：US08184819B2
公开(公告)日：2012-05-22
申请号：US11321954
申请日：2005-12-29
申请人： Henrique S. Malvar , Dinei A. Florencio , Bradford W. Gillespie
发明人： Henrique S. Malvar , Dinei A. Florencio , Bradford W. Gillespie
IPC分类号： A61F11/06
CPC分类号： H03H21/0012 , H04R1/005
摘要： A system and method facilitating signal enhancement utilizing an adaptive filter is provided. The invention includes an adaptive filter that filters an input based upon a plurality of adaptive coefficients, the adaptive filter modifying at least one of the adaptive coefficients based on a feedback output. The invention further includes a feedback component that provides the feedback output based, at least in part, upon a non-linear function of the acoustic reverberation reduced output.The invention further provides a noise statistics component that stores noise statistics associated with a noise portion of an input signal and a signal+noise statistics component that stores signal+noise statistics associated with a signal and noise portion of the input signal. The invention further provides a spatial filter that provides an output signal based, at least in part, upon a filtered input signal, the filtering being based, at least in part, upon a weighted error calculation of the noise statistics and the signal+noise statistics.
摘要翻译：提供了利用自适应滤波器促进信号增强的系统和方法。本发明包括一种基于多个自适应系数对输入进行滤波的自适应滤波器，该自适应滤波器基于反馈输出修改至少一个自适应系数。本发明还包括至少部分地基于声混响减小输出的非线性函数来提供反馈输出的反馈分量。本发明还提供了一种噪声统计组件，其存储与输入信号的噪声部分相关联的噪声统计量，以及存储与输入信号的信号和噪声部分相关联的信号+噪声统计信号的信号+噪声统计分量。本发明还提供了一种空间滤波器，其至少部分地基于经滤波的输入信号来提供输出信号，所述滤波至少部分地基于噪声统计和信号+噪声统计的加权误差计算。

2. 发明授权

US07167568B2 Microphone array signal enhancement 失效
标题翻译：麦克风阵列信号增强
公开(公告)号：US07167568B2
公开(公告)日：2007-01-23
申请号：US10138005
申请日：2002-05-02
申请人： Henrique S. Malvar , Dinei Afonso Ferreira Florencio , Bradford W. Gillespie
发明人： Henrique S. Malvar , Dinei Afonso Ferreira Florencio , Bradford W. Gillespie
IPC分类号： H04B3/20 , G06F17/10 , H04M9/08
CPC分类号： H03H21/0012 , H04R1/005
摘要： A system and method facilitating signal enhancement utilizing an adaptive filter is provided. The invention includes an adaptive filter that filters an input based upon a plurality of adaptive coefficients and modifies the adaptive coefficients based on a feedback output. A feedback component provides the feedback output based, at least in part, upon a non-linear function of the acoustic reverberation reduced output. Optionally, the system can further include a linear prediction (LP) analyzer and/or a LP synthesis filter. The system can enhance signal(s), for example, to improve the quality of speech that is acquired by a microphone by reducing reverberation. The system utilizes, at least in part, the principle that certain characteristics of reverberated speech are measurably different from corresponding characteristics of clean speech. The system can employ a filter technology (e.g. reverberation reducing) based on a non-linear function, for example, the kurtosis metric.
摘要翻译：提供了利用自适应滤波器促进信号增强的系统和方法。本发明包括一种自适应滤波器，其基于多个自适应系数对输入进行滤波，并且基于反馈输出修改自适应系数。至少部分地，基于声学混响减小的输出的非线性函数，反馈分量提供反馈输出。可选地，系统还可以包括线性预测（LP）分析器和/或LP合成滤波器。该系统可以增强信号，例如，通过减少混响来提高麦克风获取的语音质量。该系统至少部分地利用了混响语音的某些特征与清晰语音的相应特征有显着差异的原理。该系统可以采用基于非线性函数（例如峰度度量）的滤波技术（例如减小混响）。

3. 发明授权

US07197146B2 Microphone array signal enhancement 有权
标题翻译：麦克风阵列信号增强
公开(公告)号：US07197146B2
公开(公告)日：2007-03-27
申请号：US11383745
申请日：2006-05-16
申请人： Henrique S. Malvar , Dinei Afonso Ferreira Florencio , Bradford W. Gillespie
发明人： Henrique S. Malvar , Dinei Afonso Ferreira Florencio , Bradford W. Gillespie
IPC分类号： H04B3/20 , A61F11/06 , G10K11/16 , H03B29/00 , G06F17/10 , H04M9/08
CPC分类号： H03H21/0012 , H04R1/005
摘要： A system and method facilitating signal enhancement utilizing an adaptive filter is provided. The invention includes an adaptive filter that filters an input based upon a plurality of adaptive coefficients and modifies the adaptive coefficients based on a feedback output. A feedback component provides the feedback output based, at least in part, upon a non-linear function of the acoustic reverberation reduced output. Optionally, the system can further include a linear prediction (LP) analyzer and/or a LP synthesis filter. The system can enhance signal(s), for example, to improve the quality of speech that is acquired by a microphone by reducing reverberation. The system utilizes, at least in part, the principle that certain characteristics of reverberated speech are measurably different from corresponding characteristics of clean speech. The system can employ a filter technology (e.g., reverberation reducing) based on a non-linear function, for example, the kurtosis metric.
摘要翻译：提供了利用自适应滤波器促进信号增强的系统和方法。本发明包括一种自适应滤波器，其基于多个自适应系数对输入进行滤波，并且基于反馈输出修改自适应系数。至少部分地，基于声学混响减小的输出的非线性函数，反馈分量提供反馈输出。可选地，系统还可以包括线性预测（LP）分析器和/或LP合成滤波器。该系统可以增强信号，例如，通过减少混响来提高麦克风获取的语音质量。该系统至少部分地利用了混响语音的某些特征与清晰语音的相应特征有显着差异的原理。该系统可以采用基于非线性函数（例如峰度度量）的滤波技术（例如，减小混响）。

4. 发明授权

US07523212B2 System and method for configuring a computer according to a detected network 有权
标题翻译：根据检测到的网络配置计算机的系统和方法
公开(公告)号：US07523212B2
公开(公告)日：2009-04-21
申请号：US10790333
申请日：2004-03-01
申请人： Susan D. Woolf , Roland L. Fernandez , Wistar D. Rinearson , Bradford W. Gillespie
发明人： Susan D. Woolf , Roland L. Fernandez , Wistar D. Rinearson , Bradford W. Gillespie
IPC分类号： G06F15/16 , G06F15/173
CPC分类号： G06F9/44505
摘要： A networked computing environment in which a computing device is configured according to configuration information associated with a detected communication network is presented. As a computer detects a change in the network to which it is connected, the computer obtains configuration information associated with the newly detected network. According to the configuration information, the computer is configured such that some computer functions are presented and/or made available and accessible, while other computer functions are hidden and/or made unavailable and inaccessible.
摘要翻译：呈现了根据与检测到的通信网络相关联的配置信息来配置计算设备的联网计算环境。当计算机检测到其连接到的网络的变化时，计算机获得与新检测到的网络相关联的配置信息。根据配置信息，计算机被配置为使得某些计算机功能被呈现和/或可用并可访问，而其他计算机功能被隐藏和/或使其不可用和不可访问。

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