基于LabVIEW语音信号的采集与分析  

Acquisition and analysis of speech signal based on the LabVIEW

作　　者：曾亮[1] 汪正祥[1] 

机构地区：[1]上海理工大学光学工程与计算机工程学院,上海200093

出　　处：《信息技术》2013年第5期101-103,107,共4页Information Technology

摘　　要：采用美国国家仪器(NI)公司开发的LabVIEW图形化编程软件,结合计算机声卡,设计了一个语音信号的采集和处理系统。通过LabVIEW相应的声音读取、写入和存储函数,实现了对声音的采集、读取和保存。采集到的语音信号经由信号处理VI函数,进行频谱、谐波失真等分析。在系统中,可以对语音信号进行较完整的分析。进而得到信号的功率谱、幅度谱、相位谱、谐波信号数据和失真参数。而且通过友好的交互界面——前面板,可以灵活地控制系统功能的实现,得到实时的分析数据。This paper uses the LabVIEW graphical programming software, combined with computer sound card, designed a speech signal acquisition and processing system. Through the voice read, write and storage function, in LabVIEW, it achieves the collection, read and save of sound. After speech signal be collected, through the signal processing VI function, it carries on the spectrum, harmonic distortion analysis, etc. This system can comparative completely analyse voice signal. And then it gets the signal power spectrum and amplitude spectrum and phase spectrum, harmonic signal data and signal distortion parameters. Through the friendly interactive interface： front panel, it can flexible control system function, get real-time analysis data.

关 键 词：LABVIEW 语音信号 声卡 信号分析 前面板 

分 类 号：TN912.34[电子电信—通信与信息系统]