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

WO9953615A3 A DEVICE AND METHOD FOR REDUCTION OF TRANSIENTS 审中-公开
标题翻译：减少瞬态的装置和方法
公开(公告)号：WO9953615A3
公开(公告)日：1999-12-02
申请号：PCT/SE9900531
申请日：1999-03-31
申请人： GINGSJOE ANDERS , HAAKANSSON BO
发明人： GINGSJOE ANDERS , HAAKANSSON BO
IPC分类号： H03G5/24 , H03H21/00
CPC分类号： H03G5/24 , H03H21/0012
摘要： Device and method for reduction of signal transients, where the signal is divided into frequency bands, the device at least comprising a transient detector (1), a calculating means, means for delaying a signal (2) and an adaptive filter. In the device an input signal (4) is arranged to both the means for delaying a signal (2) and the transient detector (1) via parallel connection, which both are connected to the adaptive filter (3) the output (5) of which is transient reduced. Characterizing is that the detector (1) detects frequency bands with a threshold function, which indicate presence of transient, and it indicates presence of transient if derivative and/or input signal (4) level exceeds predetermined levels. The detector (1) activates, at the indication of a transient in a frequency band, a calculating means for calculation of a set of filter parameters, describing the gain of the frequency bands, for controlling the transient reduction. If the detector (1) detects presence of transient in only one frequency band, the filter parameters accomplishes a total gain to a level determined by the level of the input signal (4). When the detector (1) no longer detects presence of transient the device goes back to the previous set of filter parameters.
摘要翻译：用于减少信号瞬变的装置和方法，其中信号被分成频带，该装置至少包括瞬变检测器（1），计算装置，用于延迟信号（2）的装置和自适应滤波器。在该装置中，输入信号（4）被布置到用于经由并联连接来延迟信号（2）和瞬态检测器（1）的装置两者，两者均连接到自适应滤波器（3）这是短暂的减少。表征是检测器（1）检测具有阈值函数的频带，其表示存在瞬态，并且如果微分和/或输入信号（4）电平超过预定电平，则表示存在瞬态。检测器（1）在指示频带中的瞬态时激活用于计算一组滤波器参数的计算装置，该组滤波器参数描述了频带的增益，用于控制瞬态降低。如果检测器（1）仅在一个频带中检测到瞬态存在，则滤波器参数将实现总增益达到由输入信号（4）的电平确定的电平。当检测器（1）不再检测到瞬态存在时，设备将返回到前一组滤波器参数。

IPRDB

热门服务

关于我们

友情链接

联系方式