LabVIEW阵列语音处理系统实验平台设计  

Design of Experiment Platform for Speech Signal Processing System on Microphone Array Based on LabVIEW

作　　者：周城旭[1] 王冬霞[1] 吕义[1] 张东旭[1] ZHOU Cheng-xu WANG Dong-xia LU Yi ZHANG Dong-xu(Office of Academic Affairs, Electronic and Information Engineering College, Liaoning University of Technology, Jinzhou 121000, China)

机构地区：[1]辽宁工业大学电子与信息工程学院,教务处,辽宁锦州121000

出　　处：《实验室研究与探索》2016年第9期138-143,共6页Research and Exploration In Laboratory

基　　金：辽宁省自然科学基金(201302022);辽宁省教育厅教学改革项目(UPR20140817);辽宁省研究生精品课建设项目

摘　　要：介绍了基于LabVIEW麦克风阵列语音处理系统实验平台的设计。该平台LabVIEW的前面板采用模块化设计,包括语音采集模块、语音分析模块和语音增强模块三部分。采集模块利用PXI设备对语音源信号进行阵列同步实时采集;分析模块对采集到的语音信号进行语音特征分析,前面板还设置帧长和帧间重叠数等参数调节模块;增强模块采用阵列波束形成算法对采集模块采集到的语音信号进行增强处理。该模块采用LabVIEW与Matlab相结合,即利用LabVIEW前面板调用阵列波束形成Matlab程序包来完成,阵列波束形成算法也可以自行修改。计算机仿真实验结果验证了该实验平台的有效性。The design of experiment platform for the processing system of speech signals on microphone array based on LabVIEW is realized in this paper. There are three parts that include multi-channel collection,analysis of characteristics of speech signals and speech enhancement on the platform of speech processing. The modular design is adopted for front panel on the platform of LabVIEW,it includes collection of speech signals module,analysis of speech signals module and speech enhancement module. On the acquisition module,the speech signals on the array are real-time acquisition using PXI device. On the analysis module,the characteristics of signals are analyzed. The parameters such as frame size and the number of frame overlapping are set on the front panel. On the enhancement module,the speech signals on microphone array are enhanced by delay-sum beamforming. The LabVIEW combined with MATLAB is adopted on this module,which is that LabVIEW calls the package of MATLAB for the array beamforming which is free to be changed.The computer simulation results verify the effectiveness of the experimental platform.

关 键 词：LABVIEW 语音处理实验平台 麦克风阵列 MATLAB 

分 类 号：TN912[电子电信—通信与信息系统]