公开(公告)号：US20090304200A1

公开(公告)日：2009-12-10

申请号：US12455873

申请日：2009-06-09

Applicant: Hyun-Soo Kim ,  Han-Seok Ko ,  Joung-Hoon Beh ,  Taek-Jin Lee

Inventor： Hyun-Soo Kim ,  Han-Seok Ko ,  Joung-Hoon Beh ,  Taek-Jin Lee

IPC: G10K11/16

CPC classification number: G10K11/178 ,  G10K2210/111

Abstract: An adaptive mode control apparatus and method for adaptive beamforming based on detection of a user direction sound are provided. The adaptive mode control apparatus includes a signal intensity detector that searches for signal intensity of each designated direction to detect signal intensity having a maximum value when a voice signal of each direction is input through at least one microphone; and an adaptive mode controller that compares the signal intensity having the maximum value detected through the signal intensity detector with a threshold value and determines whether to perform an adaptive mode of a Generalized Sidelobe Canceller (GSC) according to the comparison results. Therefore, a lack of control of adaptation of an adaptive filter of the conventional art is solved. That is, as one condition for guaranteeing performance of adaptive beamforming, adaptation of an adaptive filter is not performed when noise of a sound with a high autocorrelation is cancelled.

Abstract translation: 提供了一种基于用户方向声音检测的自适应波束成形的自适应模式控制装置和方法。 自适应模式控制装置包括信号强度检测器，当通过至少一个麦克风输入每个方向的语音信号时，搜索每个指定方向的信号强度以检测具有最大值的信号强度; 以及自适应模式控制器，其将具有通过信号强度检测器检测到的最大值的信号强度与阈值进行比较，并且根据比较结果确定是否执行广义旁瓣消除器（GSC）的自适应模式。 因此，解决了传统技术的自适应滤波器的适应性缺乏控制。 也就是说，作为用于保证自适应波束形成的性能的一个条件，当取消具有高自相关性的声音的噪声时，不执行自适应滤波器的自适应。