公开(公告)号：US20030204397A1

公开(公告)日：2003-10-30

申请号：US10421316

申请日：2003-04-23

申请人： Mitel Knowledge Corporation

发明人： Maziar Amiri ,  Graham Thompson

IPC分类号： G10L015/00

CPC分类号： G10L15/28 ,  G10K11/178 ,  G10K11/346 ,  G10K2210/108 ,  G10K2210/3215 ,  G10L21/02 ,  G10L2021/02166

摘要： A beamformer for outputting an enhanced signal to a speech recognition system, comprising a microphone array for receiving audio signals from a plurality of microphones, a steering module connected to the microphone array for calculating audio parameters related to the location of a talker, the steering module being subject to an inherent initial delay in calculating the parameters, a buffer module connected to the microphone array for delaying the audio signals by at least the inherent initial delay; and a beamforming part connected to the buffer module and the steering module for directing the microphone array toward the talker in response to receiving the audio parameters from the steering part, such that an enhanced signal is output for application to a speech recognition system.

摘要翻译： 一种用于将增强信号输出到语音识别系统的波束形成器，包括用于从多个麦克风接收音频信号的麦克风阵列，连接到麦克风阵列的转向模块，用于计算与讲话者的位置相关的音频参数，转向模块 在计算参数时受到固有的初始延迟;连接到麦克风阵列的缓冲器模块，用于至少延迟固有的初始延迟; 以及波束形成部分，连接到缓冲器模块和转向模块，用于响应于从转向部分接收音频参数而将麦克风阵列引向讲话者，使得输出增强的信号以应用于语音识别系统。