虚拟声信号频谱分析仪
摘 要
信号处理几乎涉及到所有的工程技术领域，而频谱分析又是信号分析仪处理中一个非常重要的分析手段。一般的频谱分析都依靠传统频谱分析仪来完成，价格昂贵，体积庞大，不便于工程技术人员的携带。声音信号频谱分析仪改变了原有频谱分析仪的整体设计思路，用软件代替了硬件，使工程技术人员可以用一部笔记本电脑到现场就可轻松完成信号的采集、处理及频谱分析。MATLAB是一个数据分析和处理功能十分强大的工程实用软件，运用它来进行语音信号的采集、分析和处理相当方便。本文介绍了在MATLAB环境中如何采集声音信号和采集后的频谱分析方法，并使用MATLAB软件的GUI模块，设计了一个简易的声音信号频谱分析仪。
关键字：MATLAB，声音信号，频谱分析
Virtual sound signal spectrum analyzer
ABSTRACT
Signal processing is involved in almost all engineering fields, and frequency spectrum analysis is a very important analytical tool in signal processing. The general spectrum analysis is done by the traditional spectrum analyzer, which is expensive and bulky, which is not convenient for engineering and technical personnel. Voice signal spectrum analyzer changes the whole original design of spectrum analyzer, using software instead of hardware, which can help engineers to use a laptop computer to the site you can easily complete the acquisition, processing and spectral analysis of signals. MATLAB is a engineering practical software that data analysis and processing function is very powerful , using it to voice signal acquisition, analysis and processing is very convenient. This paper introduces how to collect the sound signal and the spectrum analysis method in the MATLAB environment, and uses the GUI module of MATLAB software to design a simple audio signal spectrum analyzer.
Keywords: MATLAB, sound signal, spectrum analysis
引言
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