摘要自20世纪来，声音识别技术得到了更为迅猛的发展，其应用领域也不断扩大。尤其是声纹识别系统的应用，已经覆盖了不少需要核查身份的场合。因此，本论文基于Labview界面和Matlab编程对声纹识别系统进行具体设计。68298

 论文介绍了基于Labview的声音采集系统的设计方法，详细说明了声音信号采集存储的过程。根据几种常用的声纹特征，设计了MFCC特征参数提取的流程，并用Matlab编写了提取程序。另外，论文还介绍了三种声音识别模型，重点描述了矢量量化模型，并利用该模型对提取的声音特征训练后形成码本，构成样本库。最后对即时声音进行采集测试，并与样本库中的码本比较判断是否匹配。

毕业论文关键词  MFCC特征值  矢量量化  特征提取  说话人识别

毕业设计说明书（论文）外文摘要

Title    Labview-Based Voice Recognition System Design                    

Abstract

In recent years, the rapid development of voice recognition technology is amazing. Its application extends to every aspect of our lives. Especially, with the speaker verification system, the use for identity verification has been applied in many places. Thus, the thesis gives a specific design of the speaker recognition system.

This paper introduces the design method of sound acquisition system based on Labview software and a detailed description of how to collect and store the sound signals into a computer. This paper also gives several commonly used voiceprint characteristics, and highlight the process of MFCC parameter extraction,as well as how to write its codes by Matlab software. In addition, the paper also describes three voice recognition models, focusing on vector quantization model. It gives a detailed description of how to use the vector quantization model to train codebook of voice feature, consisting of sample library; then collect and test the new sound to see if it matches with the codebook of sample library.

Keywords  MFCC eigenvalues   Vector Quantization  Feature Extraction   Speaker Recognition

目   次

1  引言 1

1.1  课题研究的背景及意义 1

1.2  声音识别系统的具体应用 1

1.3  声音识别技术的现状 2

1.4  研究工作概述 2

2  基于Labview的声音信号采集 4

2.1  Labview概述 4

2.2  声音采集系统的设计 4

3  基于Matlab的声音特征提取 10

3.1  声音特征参数概述 10

3.2  提取特征的基本过程 10

4  识别模型 24

4.1  隐马尔可夫模型 24

4.2  高斯混合模型 25

4.3  矢量量化模型 25

结  论 36

致  谢 37

参 考 文 献 38

附  录1 39

附  录2 41

附  录3 44

1  引言