专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100057454A1 SYSTEM AND METHOD FOR ECHO CANCELLATION 失效
标题翻译： ECHO CANCELLATION的系统和方法
公开(公告)号：US20100057454A1
公开(公告)日：2010-03-04
申请号：US12204608
申请日：2008-09-04
申请人： Asif Iqbal Mohammad , Steven L. Grant , Heejong Yoo , Deepak Challa
发明人： Asif Iqbal Mohammad , Steven L. Grant , Heejong Yoo , Deepak Challa
IPC分类号： G10L15/20
CPC分类号： H04M9/082 , H04B3/234
摘要： An echo canceller for improved recognition and removal of an echo from a communication device. The echo canceller can dynamically reduce echo using an improved energy estimator and an improved adaptive filter. The improved energy estimator can determine if conversation is in a single talk period or a double talk period based on the combined energy of both the near end background noise and speech. The improved adaptive filter can reduce echo by dynamically changing adaptation speed or step size. In double talk, the adaptive filter(s) can dynamically slow-down or stop adaptation. In single talk, the filter can dynamically increase the speed of adaptation to improve accuracy, or decrease adaptation speed for stability.
摘要翻译：用于改善来自通信设备的回波的识别和去除的回波消除器。回波消除器可以使用改进的能量估计器和改进的自适应滤波器来动态地减少回波。改进的能量估计器可以基于近端背景噪声和语音的组合能量来确定对话是处于单个通话周期还是双重通话周期。改进的自适应滤波器可以通过动态地改变自适应速度或步长来减少回波。在双语中，自适应滤波器可以动态地减慢或停止适应。在单声道中，滤波器可以动态地提高适应速度，以提高精度，或者降低适应速度以获得稳定性。

2. 发明申请

US20080240413A1 CROSS-CORRELATION BASED ECHO CANCELLER CONTROLLERS 有权
标题翻译：基于交叉关联的ECHO CANCELLER控制器
公开(公告)号：US20080240413A1
公开(公告)日：2008-10-02
申请号：US11695426
申请日：2007-04-02
申请人： Asif Iqbal Mohammad , Jack W. Stokes , Steven L. Grant
发明人： Asif Iqbal Mohammad , Jack W. Stokes , Steven L. Grant
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： Cross-correlation based echo canceller controllers are described herein. By way of example, a system for controlling an echo canceller having one or more adaptive filters can include one or more adaptive filter controllers each corresponding to one of the one or more adaptive filters and each configured to halt adaptation of its corresponding adaptive filter according to the cross-correlation of its corresponding corrupted signal and its corresponding error signal of its corresponding adaptive filter.
摘要翻译：本文描述了基于互相关的回声消除器控制器。作为示例，用于控制具有一个或多个自适应滤波器的回波消除器的系统可以包括一个或多个自适应滤波器控制器，每个自适应滤波器控制器对应于一个或多个自适应滤波器中的一个自适应滤波器，并且每个被配置为根据其相应的损坏信号的互相关及其对应的自适应滤波器的相应误差信号。

3. 发明授权

US5124608A Low-noise slip ring assembly 失效
标题翻译：低噪音滑环组件
公开(公告)号：US5124608A
公开(公告)日：1992-06-23
申请号：US646100
申请日：1991-01-25
申请人： David C. Lawrence , Steven L. Grant , John W. Giles, Jr.
发明人： David C. Lawrence , Steven L. Grant , John W. Giles, Jr.
IPC分类号： H01R39/08 , H01R39/64
CPC分类号： H01R39/64 , H01R39/08
摘要： A slip ring assembly having a rotatable chamber including a shaft rotatably mounted therein. A plurality of slip rings are provided within a ring section of the rotatable chamber and are mounted to the shaft for rotation therewith. The plurality of slip rings for a group of preselected pairs of slip rings. An electrical conductor is connected to each slip ring with each electrical conductor being twisted to at least one adjacent electrical conductor through a central core in the shaft to thereby cancel alternating current due to self-generated voltages. The slip ring assembly also includes a brush assembly having at least one brush support associated with each slip ring with each brush support having brushes extending therefrom in contact with its corresponding slip ring at at least two brush contacts. The brush contacts for each slip are orientated approximately 180 degrees apart. Furthermore, brush contacts for each preselected pair of adjacent slip rings are orientated at an offset of approximately 90 degrees.
摘要翻译：一种滑环组件，其具有可旋转地安装在其中的可旋转腔室，所述旋转腔室包括轴。多个滑环设置在可旋转室的环形部分内并且安装到轴上以与其一起旋转。用于一组预选的滑环对的多个滑环。电导体连接到每个滑环，每个电导体通过轴中的中心芯扭转至至少一个相邻的电导体，从而由于自发电压而消除交流电流。滑环组件还包括具有与每个滑环相关联的至少一个刷子支撑件的刷子组件，每个刷子支撑件具有从其在至少两个刷子触点处与其对应的滑环接触的刷子延伸。每个滑块的刷子触点定向约180度。此外，每个预选的一对相邻滑环的刷触点定向在大约90度的偏移处。

4. 发明授权

US08600038B2 System and method for echo cancellation 失效
标题翻译：用于回声消除的系统和方法
公开(公告)号：US08600038B2
公开(公告)日：2013-12-03
申请号：US12204608
申请日：2008-09-04
申请人： Asif Iqbal Mohammad , Steven L. Grant , Heejong Yoo , Deepak Kumar Challa
发明人： Asif Iqbal Mohammad , Steven L. Grant , Heejong Yoo , Deepak Kumar Challa
IPC分类号： H04M9/08 , A61F2/20 , H04B3/20 , H04B1/38
CPC分类号： H04M9/082 , H04B3/234
摘要： An echo canceller for improved recognition and removal of an echo from a communication device. The echo canceller can dynamically reduce echo using an improved energy estimator and an improved adaptive filter. The improved energy estimator can determine if conversation is in a single talk period or a double talk period based on the combined energy of both the near end background noise and speech. The improved adaptive filter can reduce echo by dynamically changing adaptation speed or step size. In double talk, the adaptive filter(s) can dynamically slow-down or stop adaptation. In single talk, the filter can dynamically increase the speed of adaptation to improve accuracy, or decrease adaptation speed for stability.
摘要翻译：用于改善来自通信设备的回波的识别和去除的回波消除器。回波消除器可以使用改进的能量估计器和改进的自适应滤波器来动态地减少回波。改进的能量估计器可以基于近端背景噪声和语音的组合能量来确定对话是处于单个通话周期还是双重通话周期。改进的自适应滤波器可以通过动态地改变自适应速度或步长来减少回波。在双语中，自适应滤波器可以动态地减慢或停止适应。在单声道中，滤波器可以动态地提高适应速度，以提高精度，或者降低适应速度以获得稳定性。

5. 发明授权

US08014519B2 Cross-correlation based echo canceller controllers 有权
标题翻译：基于互相关的回波消除器控制器
公开(公告)号：US08014519B2
公开(公告)日：2011-09-06
申请号：US11695426
申请日：2007-04-02
申请人： Asif Iqbal Mohammad , Jack W. Stokes, III , Steven L. Grant
发明人： Asif Iqbal Mohammad , Jack W. Stokes, III , Steven L. Grant
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： Cross-correlation based echo canceller controllers are described herein. By way of example, a system for controlling an echo canceller having one or more adaptive filters can include one or more adaptive filter controllers each corresponding to one of the one or more adaptive filters and each configured to halt adaptation of its corresponding adaptive filter according to the cross-correlation of its corresponding corrupted signal and its corresponding error signal of its corresponding adaptive filter.
摘要翻译：本文描述了基于互相关的回声消除器控制器。作为示例，用于控制具有一个或多个自适应滤波器的回波消除器的系统可以包括一个或多个自适应滤波器控制器，每个自适应滤波器控制器对应于一个或多个自适应滤波器中的一个自适应滤波器，并且每个被配置为根据其相应的损坏信号的互相关及其对应的自适应滤波器的相应误差信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式