语音识别在交通等待提醒中的应用研究 毕业论文

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1、毕业设计设计题目：语音识别在交通等待提醒中的应用研究学生姓名：学号：20104873专业班级：电子科学与技术10-1班指导教师：院系名称：电子科学与应用物理学院目录中文摘要····························································1英文摘要····························································21绪论···········································

2、··················31.1设计背景······················································31.2任务目的······················································31.3设计思路······················································32语音识别概述··············································

3、·······52.1语音识别的基本原理············································52.2目前仍存在的问题··············································52.2.1语音识别的方言和口音问题································62.2.2信道问题················································62.2.3背景噪音问题················

4、····························62.2.4自然语音理解领域········································62.2.5语音合成················································62.3语音识别的基本过程···········································62.4语音识别技术的前景与发展·····································73基于隐马尔科夫

5、模型的语音识别系统·································103.1语音识别的系统结构···········································103.1.1语音识别的整体层次模型··································103.1.2语音识别的框架··········································103.1.3语音信号的产生模型···································

6、···103.2语音信号预处理···············································113.2.1语音信号模数变换和滤波··································113.2.2预加重··················································123.3语音特征参数提取·············································123.3.1线性预测倒谱系数LPCC·······

7、·····························123.3.2MEL倒谱系数MFCC·········································133.3.3MFCC系数和LPCC系数的比较································133.4HMM应用于语音识别············································143.4.1HMM模型的选取·········································

8、··143.4.2拓扑形式和状态个数选取··································143.4.3HMM的训练···············································153.5语音识别·····················································153.5.1基于HMM汉语数码孤立