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1、目录插图清单II摘要IIIAbstractIV引言-1-第一章语音信号的采集-2-1.1语音信号产生数字模型-2-1.2语音信号的数字化和预处理-2-第二章语音信号的分析-6-2.1语音信号的时域分析和频域分析-6-2.1.1语音信号的时域分析-6-2.1.2语音信号的频域分析-6-2.2语音信号处理软件介绍-7-2.3基于MATLAB的语音信号处理-7-第三章MATLAB滤波器设计-9-3.1模拟滤波器设计-9-3.2数字滤波器设计-9-第四章语音信号降噪处理-11-4.1语音信号处理调用函数介绍-11-4.2语音信号降噪程序设计-12-4
2、.2.1原始语音信号的获得-12-4.2.2原始语音信号加噪处理-13-4.2.3语音信号滤波处理-15-4.3改进型语音降噪技术-18-结论-25-参考文献-26-致谢-27-methodofbasicoperation;includingCT,andMRIvariouscontrast,andImage-guidedbiopsy,ultrasound,etc.(11)teaching,scientificresearchandtraininginclinicalteaching,writtenwithinthreeyearswithsom
3、elevelofrevieworbookreportsofnotlessthan1.Four,toreadreferencebooks,Journalofinternalmedicine(medicalcollegeplanningmaterials)andofthemedicalimaging(medicalcollegeplanningmaterials);thepracticalscience;theHarrisonScience(inEnglish),ChineseJournalofinternalmedicineseries.Sur
4、gicalsurgicalspecialistreferstotherulescompletethemedicalundergraduateorgraduateeducationFoundation,acceptedandadoptedsurgicalspecialisttraining,surgicaldiagnosis,treatment,preventionandfollow-upofcommondiseases,surgicaldiagnosisandtreatmentofrareorincurablediseases,acutean
5、dcriticalillnessinemergencyandrescuehavepreliminaryknowledgeandexperience.Surgicalspecialisttrainingfor3years.Asurgicalspecialist,traininggoalsthroughtraining,traineestoachievesurgicalspecialistlevel,withmoreskilledsurgicalskills,canguidetheteachingof-23-插图清单图1-1语音信号产生模型………
6、…………………………………………………-2-图1-2语音信号时域波形…………………………………………………………-3-图1-3语音信号频谱图……………………………………………………………-4-图1-4时域波形比较……………………………………………………………-5-图2-1语音信号降噪流程图……………………………………………………-8-图3-1巴特沃斯滤波器频率响应………………………………………………-10-图4-1原始语音信号时域波形…………………………………………………-13-图4-2原始语音信号频谱图…………………………………………………
7、…-13-图4-3加噪语音信号时域波形…………………………………………………-15-图4-4加噪语音信号频谱图……………………………………………………-15-图4-5滤波前后时域波形比较图………………………………………………-17-图4-6滤波前后频谱比较图……………………………………………………-17-图4-7语音激活检测框图………………………………………………………-18-图4-8纯净语音信号时域波形…………………………………………………-23-图4-9带噪语音信号时域波形…………………………………………………-23-图4-10增强后语音
8、信号时域波形……………………………………………-24-methodofbasicoperation;includingCT,andMRIvariouscontras
