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1. 发明授权

US08693678B2 Device and method for controlling damping of residual echo 有权
标题翻译：用于控制残余回波阻尼的装置和方法
公开(公告)号：US08693678B2
公开(公告)日：2014-04-08
申请号：US13384554
申请日：2010-06-17
申请人： Fredric Lindström , Christian Schüldt , Ingvar Claesson
发明人： Fredric Lindström , Christian Schüldt , Ingvar Claesson
IPC分类号： H04M9/08
CPC分类号： H04M9/082 , G10L2021/02082
摘要： The present invention relates to a device, such as a communication device, comprising an adaptive foreground filter configured to calculate a first echo estimation signal based on a first input signal, and an adaptive background filter being more rapidly adapting than the foreground filter and configured to calculate a second echo estimation signal based on said first input signal. Embodiments of the device further comprise damping control means for controlling damping of an echo-cancelled output signal. The device in various embodiments includes that the damping control means is configured to calculate a maximum echo estimation signal using both the first and the second echo estimation signals, and control the damping of the echo-cancelled output signal based on said maximum echo estimation signal and/or a signal derived from said maximum echo estimation signal.
摘要翻译：本发明涉及一种诸如通信设备的设备，包括：自适应前景滤波器，被配置为基于第一输入信号计算第一回波估计信号，并且自适应背景滤波器比前台滤波器更快地适应并且被配置为基于所述第一输入信号计算第二回波估计信号。该装置的实施例还包括用于控制回波消除的输出信号的阻尼的阻尼控制装置。各种实施例中的装置包括阻尼控制装置被配置为使用第一和第二回波估计信号来计算最大回波估计信号，并且基于所述最大回波估计信号来控制回波消除输出信号的衰减，以及 /或从所述最大回波估计信号得到的信号。

2. 发明授权

US09313573B2 Method and device for microphone selection 有权
标题翻译：麦克风选择方法和设备
公开(公告)号：US09313573B2
公开(公告)日：2016-04-12
申请号：US13980517
申请日：2011-11-16
申请人： Christian Schüldt , Fredric Lindström
发明人： Christian Schüldt , Fredric Lindström
IPC分类号： H04R3/00 , G10L21/02 , G10L21/0264 , G10L25/12 , G10L21/0216
CPC分类号： H04R3/005 , G10L21/02 , G10L21/0264 , G10L25/12 , G10L2021/02166 , H04R2430/03
摘要： The present invention relates to a device, such as an audio communication device, for combining a plurality of microphone signals xn(k) into a single output signal y(k). The device comprises processing means configured to calculate control signals fn(k), and control means configured to select which microphone signal xn(k) or which combination of microphone signals xn(k) to use as output signal y(k) based on said control signals fn(k). To improve the selection, the device comprises linear prediction filters for calculating linear prediction residual signals en(k) from the plurality of microphone signals xn(k), and the processing means is configured to calculate the control signals fn(k) based on said linear prediction residual signals en(k).
摘要翻译：本发明涉及一种用于将多个麦克风信号xn（k）组合成单个输出信号y（k）的装置，诸如音频通信装置。该装置包括被配置为计算控制信号fn（k）的处理装置和被配置为根据所述的麦克风信号xn（k）或哪个麦克风信号xn（k）的组合用作输出信号y（k）的控制装置控制信号fn（k）。为了改善选择，该装置包括用于从多个麦克风信号xn（k）计算线性预测残差信号en（k）的线性预测滤波器，并且处理装置被配置为基于所述多个麦克风信号计算控制信号fn（k）线性预测残差信号en（k）。

3. 发明申请

US20130322655A1 METHOD AND DEVICE FOR MICROPHONE SELECTION 有权
标题翻译：麦克风选择的方法和装置
公开(公告)号：US20130322655A1
公开(公告)日：2013-12-05
申请号：US13980517
申请日：2011-11-16
申请人： Christian Schüldt , Fredric Lindström
发明人： Christian Schüldt , Fredric Lindström
IPC分类号： H04R3/00
CPC分类号： H04R3/005 , G10L21/02 , G10L21/0264 , G10L25/12 , G10L2021/02166 , H04R2430/03
摘要： The present invention relates to a device, such as an audio communication device, for combining a plurality of microphone signals xn(k) into a single output signal y(k). The device comprises processing means configured to calculate control signals fn(k), and control means configured to select which microphone signal xn(k) or which combination of microphone signals xn(k) to use as output signal y(k) based on said control signals fn(k). To improve the selection, the device comprises linear prediction filters for calculating linear prediction residual signals en(k) from the plurality of microphone signals xn(k), and the processing means is configured to calculate the control signals fn(k) based on said linear prediction residual signals en(k).
摘要翻译：本发明涉及一种用于将多个麦克风信号xn（k）组合成单个输出信号y（k）的装置，诸如音频通信装置。该装置包括被配置为计算控制信号fn（k）的处理装置和被配置为根据所述的麦克风信号xn（k）或哪个麦克风信号xn（k）的组合用作输出信号y（k）的控制装置控制信号fn（k）。为了改善选择，该装置包括用于从多个麦克风信号xn（k）计算线性预测残差信号en（k）的线性预测滤波器，并且处理装置被配置为基于所述多个麦克风信号计算控制信号fn（k）线性预测残差信号en（k）。

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