双微阵列语音增强与定位方法研究

项目名称： 双微阵列语音增强与定位方法研究

项目编号： No.61461011

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 曾庆宁

作者单位： 桂林电子科技大学

项目金额： 45万元

中文摘要： 双微阵列是指两个具有一定距离的微型阵列，非常适合置于人或仿人机器人的双耳部位，提供比单个微型阵列和双麦克风更好的语音增强与声源定位效果,从而为人们提供良好的助听功能以及为仿人机器人提供听觉功能。本项目拟根据双微阵列的空间结构和信号特点，研究延迟加权求和波束形成方法、修正的广义旁瓣抵消方法、以及多采样率自适应噪声抵消的数学原理，从而给出适用于双微阵列的语音增强方法；拟研究高精度时延估计方法以及子阵列综合优化定位方法，从而给出适合双微阵列的声源定位方法。该项目的成果可用于数字助听器及人工耳蜗，为其语音增强提供核心算法；亦可用于仿人机器人，为其提供拟人的耳部，并为提高其语音识别与声源定位能力而奠定基础；还可用于手机及掌上电脑，为其改善语音识别功能与实现优听功能而提供方法；该项目的成果亦可推广到基于多个阵列的宽带信号增强与定位研究，从而应用于声呐、通信及雷达信号处理等其他领域。

中文关键词： 语音增强；麦克风阵列；助听

英文摘要： Dual mini-array is a set of two mini-arrays with certain distance, being very suitable to be placed to the aural regions of a person or a humanoid robot. It may leads to better speech enhancement and sound source localization results than sigle mini-array and dual microphone, to provide people with good hearing aid effect and the humanoid robot with good audition function. In this project, the spatial structure of the dual miniarray and the characteristics of multi-channel signals acquired through the dual mini-array will be investigated and utilized.By researching on the Delay And Weighted Sum (DAWS) beanforming method, Modified Generalized Sidelobe Cancelling (MGSC) method and the principle of Multiple Sampling Rate based Adaptive Noise Cancelling (MSR-ANC), we will aim to propose some efficient dual mini-array based speech enhacement methods. And by researching on the method of Highly-Accurate Time Delay Estimation (HA-TDE) and the method for the optimal combination of the sub-array localizations, we will try to bring forth some daul mini-array based sound source localization methods.The achievements of this project may provide the digital hearing aids and cochleas with key speech enhancement algorithm, and provide the robot not only with humanoid ears , but also a way for higher abilities in speech recognition and sound source localization. The achievments may also be used in mobile phones and personal digital aids, providing them with some methods for better speech recognition ability and excellent quality of sounds. In addition, the achievements may also be gerneralized to the research on multi-array based wideband signal enhancement and localization, thus be used for the signal processing in sonar, telecommunication and radar,etc.

英文关键词： speech enhancement;microphone array;hearing aid