基于线性预测编码的语音基音周期检测算法与实现

摘要线性预测作为一种工具，是现在比较先进的语音分析技术之一。线性预测技术发展到今，已经使语音处理有了许多突破和发展，是语音分析的重要基础。本论文主要研究了基于LPC 的语音基音周期检测算法与实现，介绍了基于线性预测编码技术相关的语音信号处理基础知识，阐明了线性预测分析的基本原理。详细的介绍了线性预测分析的两大基本方法——协方差法和自相关法的基本原理与核心算法。并比较了它们之间的优劣，选取了最优的算法。本文还阐明了线性预测中关于基音检测的基本原理, 介绍了这次基音检测的方法-简化逆滤波法的基本方法。并在MATLAB 上完成了仿真，完成了语音包的测试，与手工标定值进行了比较，做了相关的分析。本文还介绍了本次论文使用的DSP 开发环境，基于 DSP开发了相应程序，并完成语音包与实测信号的测试，并做了相关的分析和总结。最后对基于LPC的语音基音周期检测算法的研究即本论文的发展前景做了展望。26761
毕业论文关键词：线性预测分析；自相关法；基音检测；数字信号处理
Title   Pitch detection algorithm of speech based on linear predictive coding realization
ABSTRACT
This paper mainly studies the LPC speech pitch detection algorithm and its
implementation based on introduced based on linear predictive coding of the
speech signal processing knowledge base and clarifies the basic principle of
linear prediction analysis. Linear prediction analysis of two basic methods,
the covariance method and autocorrelation method basic principle and core
algorithm are introduced in detail. And compare the quality between
them ,explains the reasons for using the autocorrelation method.
The paper clarifies the basic theory on the pitch detection in linear
prediction, introduces the pitch detection method - Simplified inverse
filtering method is the basic method. And in MATLAB completes the simulation
testing of voice packet is completed, and manual calibration values were
compared with the relevant analysis.
Are also introduced in this paper using the DSP development environment,
based on DSP, and complete testing of voice packets and the measured signal,
and do the correlation analysis and summary.
At the end of the study of speech pitch detection algorithm
LPC the development prospect of the paper based on the forecasted.
Keywords LPC; Autocorrelation; pitch detection; DSP
目次
第 1章绪论 .. 1
1.1. 课题概述    1
1.2. 论文的结构安排    2
第 2章线性预测分析综述 .. 4
2.1. 线性预测分析的基本原理 .. 4
2.2. 线性预测分析自协方差法和自相关的解法 . 9
2.3. 预测误差及其自相关函数    16
第 3章基于线性预测的基音检测    18
3.1. 简化逆滤波法 .. 18
3.2. 仿真结果分析 .. 22
第 4章 DSP的硬件设计和软件设计 . 25
4.1. DSP的硬件平台的介绍   25
4.2. DSP芯片的介绍   26
4.3. CCS开发环境 . 27
4.4. 软件开发流程 .. 27
4.5. DSP仿真模拟分析 .. 32
总结与展望 .. 33
鸣谢 .. 34
参考文献    35
第1章    绪论
1.1.    课题概述
1.1.1.   课题研究的背景
在现实中 ,根据已知的事物,通过科学的分析从而推测出并研究未知,这就是预测。所有基于线性预测编码的语音基音周期检测算法与实现:http://www.youerw.com/tongxin/lunwen_21035.html