项目名称: 基于人耳听觉启示的麦克阵列语音定位研究
项目编号: No.61201420
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 电子学与信息系统
项目作者: 张奕
作者单位: 大连大学
项目金额: 24万元
中文摘要: 参考人类双耳定位的生理学和心理学机理,将其简化为可工程应用的数学表达,并扩展应用到麦克风阵列定位领域,以提升算法在混响环境、多声源、远距环境下的定位性能。仿照人的耳廓反射定位机理,设计具有近传感器反射面的麦克风阵列,研究该种麦克风阵列的拓扑分布和定位算法;针对多声源、混响环境下,结合研究信道盲辨识技术和近传感器反射面特性,开发多尺度双层阵列的语音定位算法。利用墙角内的回复反射现象,设计一种双层阵列拓扑结构,并提出一种随着外层拓扑的变化线性变化偏离度函数。仿照人头部遮挡定位机理,设计头盔佩戴式麦克风阵列,以提高麦克风阵列的远距定位精度为目的,研究分布在半圆形头盔上的麦克风阵列的定位算法和最优拓扑分布,根据头盔对声波不同波段的衍射和反射的实际物理作用,设计一种可充分利用这种空间信息的拓扑结构和相应的定位系统。 采用子空间技术,结合语音的非白、非平稳性,研究可综合利用强度信息和时延信息的定位框架
中文关键词: 多声源定位;头盔式麦克风阵列;双麦克风定位;二进制红外阵列;视频动态提取
英文摘要: Ispired by human ears, we simplified mathematical expression of the physiology and psychology of the human positioning mechanism for engineering applications, and extend the application to the field of microphone array localization. To enhance the algorithm performance in reverberant、 multiple sound sources and far distance environment under the positioning. Modeled on the human auricle reflex positioning mechanism, we design near-sensor reflective surface of the microphone array and research the topology of the microphone array distribution and localization algorithm; for multiple sound sources, reverberant environment, combined with the study of Blind Channel Identification and nearly sensors the reflective surface features,we develope multi-scale double array of voice positioning algorithm by utilizing corner retro-reflector phenomenon, and design a double array topology, and propose a deviate function that change linearly with the outer layer topology changes. Modeled on the positioning mechanism of the head function, design helmets wear microphone array to improve the remote positioning accuracy, ang research optimal semicircular helmet distributed microphone array topology and localization algorithms. according to the actual physical acoustic effects of diffraction and reflection on the helmet towards d
英文关键词: Multi-source localization;helmet microphone array;dual-mic localization;binary infrared array;video motion extraction