Adaptive filter update normalization
    4.
    发明授权
    Adaptive filter update normalization 失效
    自适应滤波器更新归一化

    公开(公告)号:US4468641A

    公开(公告)日:1984-08-28

    申请号:US393124

    申请日:1982-06-28

    IPC分类号: H03H21/00 H04B3/23 H03H15/00

    摘要: Loop gain normalization is employed in adaptive filters to control weighting of the filter characteristic updates in order to converge properly to a desired filter characteristic. Filter stability and rapid high quality convergence is realized for a variety of received or inputted signals by employing both long term and fast attack estimates of a prescribed input signal characteristic to normalize the update gain. In one embodiment, both long term and fast attack input signal power estimates are generated and one of the two estimate values is selected to normalize the update gain. Specifically, the fast attack estimate is modified by a predetermined value and, then, the larger of the long term estimate and modified fast attack estimate is selected to normalize the update gain.

    摘要翻译: 在自适应滤波器中采用环路增益归一化来控制滤波器特征更新的权重,以便适当地收敛到期望的滤波器特性。 通过采用规定的输入信号特征的长期和快速攻击估计来对更新增益进行归一化,实现了各种接收或输入信号的滤波器稳定性和快速高质量的收敛。 在一个实施例中,生成长期和快速攻击输入信号功率估计,并且选择两个估计值中的一个来归一化更新增益。 具体地说,快速攻击估计被修改预定值,然后,选择较长的长期估计和修改的快速攻击估计来规范更新增益。

    Zooming and panning widget for internet browsers
    5.
    发明授权
    Zooming and panning widget for internet browsers 有权
    缩放和平移网路浏览器的小工具

    公开(公告)号:US09459783B2

    公开(公告)日:2016-10-04

    申请号:US13143898

    申请日:2010-01-06

    摘要: In one aspect, a widget mechanism for zooming and panning a content item is provided. The widget mechanism includes a first region including a miniaturized and complete version the content item. The widget mechanism further includes a second region including a displayed version of the content item. The displayed version represents a portion of the content item currently displayed on a display. The widget mechanism further includes a third region including a to be displayed version of the content item. The to be displayed version represents a portion of the content item to be displayed on the display upon actuation. The second region is smaller than and within the first region when the content item is zoomed and the second region is coextensive or substantially coextensive with the first region when the content item is fully not zoomed. The third region is adjustable within the first region.

    摘要翻译: 在一个方面,提供了用于缩放和平移内容项的小部件机构。 小部件机构包括包含内容项目的小型化和完整版本的第一区域。 小部件机构还包括包括内容项目的显示版本的第二区域。 显示的版本表示当前显示在显示器上的内容项的一部分。 窗口小部件机构还包括第三区域,包括内容项目的待显示版本。 要显示的版本表示在启动时要在显示器上显示的内容项的一部分。 当内容项目被放大时,第二区域小于和在第一区域内,并且当内容项目被完全没有缩放时,第二区域与第一区域共延伸或基本共同延伸。 第三区域可在第一区域内调节。

    Zooming and Panning Widget for Internet Browsers
    6.
    发明申请
    Zooming and Panning Widget for Internet Browsers 有权
    互联网浏览器的缩放和平移小部件

    公开(公告)号:US20120030613A1

    公开(公告)日:2012-02-02

    申请号:US13143898

    申请日:2010-01-06

    IPC分类号: G06F3/048 G09G5/00

    摘要: In one aspect, a widget mechanism for zooming and panning a content item is provided. The widget mechanism includes a first region including a miniaturized and complete version the content item. The widget mechanism further includes a second region including a displayed version of the content item. The displayed version represents a portion of the content item currently displayed on a display. The widget mechanism further includes a third region including a to be displayed version of the content item. The to be displayed version represents a portion of the content item to be displayed on the display upon actuation. The second region is smaller than and within the first region when the content item is zoomed and the second region is coextensive or substantially coextensive with the first region when the content item is fully not zoomed. The third region is adjustable within the first region.

    摘要翻译: 在一个方面,提供了用于缩放和平移内容项的小部件机构。 小部件机构包括包含内容项目的小型化和完整版本的第一区域。 小部件机构还包括包括内容项目的显示版本的第二区域。 显示的版本表示当前显示在显示器上的内容项的一部分。 窗口小部件机构还包括第三区域,包括要显示的内容项目的版本。 要显示的版本表示在启动时要在显示器上显示的内容项的一部分。 当内容项目被放大时,第二区域小于和在第一区域内,并且当内容项目被完全没有缩放时,第二区域与第一区域共延伸或基本共同延伸。 第三区域可在第一区域内调节。

    Consolidated voice activity detection and noise estimation
    8.
    发明授权
    Consolidated voice activity detection and noise estimation 有权
    综合语音活动检测和噪声估计

    公开(公告)号:US06526140B1

    公开(公告)日:2003-02-25

    申请号:US09706303

    申请日:2000-11-03

    IPC分类号: H04M908

    摘要: Methods and apparatus for processing at least one voice signal in which a centralized voice processing unit controls operation of a plurality of voice processing block. In a first embodiment, the centralized voice processing unit comprises a centralized voice activity detector that provides at least one voice activity indication to the plurality of voice processing blocks. In a second embodiment, the centralized voice processing unit comprises a centralized noise estimator that provides at least one noise estimate to the plurality of voice processing blocks. In a third embodiment, the centralized voice processing unit comprises a centralized signal characteristic estimator that provides at least one signal characteristic estimate to the plurality of voice processing blocks.

    摘要翻译: 用于处理至少一个语音信号的方法和装置,其中集中式语音处理单元控制多个语音处理块的操作。 在第一实施例中,集中式语音处理单元包括向多个语音处理块提供至少一个语音活动指示的集中语音活动检测器。 在第二实施例中,集中式语音处理单元包括向多个语音处理块提供至少一个噪声估计的集中噪声估计器。 在第三实施例中,集中式语音处理单元包括向多个语音处理块提供至少一个信号特性估计的集中式信号特征估计器。

    Adaptive filter including controlled tap coefficient leakage
    9.
    发明授权
    Adaptive filter including controlled tap coefficient leakage 失效
    自适应滤波器包括受控抽头系数泄漏

    公开(公告)号:US4467441A

    公开(公告)日:1984-08-21

    申请号:US433409

    申请日:1982-10-08

    摘要: In adaptive filters, under certain incoming signal conditions the tap coefficients tend to drift toward relatively large values. This condition has been countered by introducing so-called leakage into the tap coefficients which tends to drive them toward zero. Introduction of leakage is desirable under certain incoming signal conditions and not others. Indeed, during intervals that partial band energy, e.g., single frequency tones, multifrequency tones and the like, is incoming to the filter there is a need to introduce a relatively large leakage value into the tap coefficients. However, during intervals that whole band energy, e.g., speech or noise, is incoming to the filter no leak is desired or needed. This is realized by detecting intervals when partial band energy is incoming to the filter and controllably increasing the leakage value during those intervals.

    摘要翻译: 在自适应滤波器中,在某些输入信号条件下,抽头系数往往偏向较大的值。 这种情况已经通过将所谓的泄漏引入到趋向于将它们驱动到零的抽头系数来抵消。 在某些输入信号条件下,不需要引入泄漏,而不是其他情况。 实际上,在部分频带能量(例如单频率音调,多频音调等)进入滤波器的间隔期间,需要在抽头系数中引入相对较大的泄漏值。 然而,在整个频带能量(例如语音或噪声)进入滤波器的间隔期间,不需要或需要泄漏。 这是通过检测当部分波段能量进入滤波器时的间隔,并且可控地增加那些间隔期间的泄漏值来实现的。