1、 I 摘要摘要 语音信号处理就是研究如何能更加有效地产生、传输和获取语音信息的学 科。本论文首先介绍了语音信号处理的发展概况及国内外研究现状，并对未来发 展做了展望，分析了语音特征参数的物理意义以及如何对其进行提取。在硬件部 分本文主要围绕 TMS320VC5402 为核心，给出一个语音处理系统的设计方案。首 先对 DSP 系统的组成简要说明了一下，然后给出了设计的基本框架，接下来分别 就音频转换模块、电源电压转换模块等主要部分做了详细说明，最后对其它附属 电路简要介绍。在设计中应用到了数字信号处理器(DSP)技术。在软件部分本文 首先对 TI 公司的 DSP 开发工具 CCS 作了介绍，接着
2、对 DSP 软件开发流程进行了 简要的叙述，然后就详细的分别对 DSP 的初始化、音频采集、TMS320VC5402 的 并行引导装载程序进行了分析与设计。 本文所涉及内容属于一个语音识别系统的一部分， 在研究过程中对于语音处理的 发展与研究现状进行了深入了解，对于 TMS320VC5402 芯片的性能参数以及软硬 件相关知识掌握较详细，熟悉了 DSP 系统的设计与开发流程。 关键词： 语音信号处理;特征参数;数字信号处理器;ISD4004;SPI II Abstract Speech signal processing is a subject to study how to produce
3、，transmit and obtain speech information effectivelyThe thesis starts with a literature review about the development of speech signal processing and provides an expectation for the futureNextan analysis is carried out on production mechanism of speech signal， setting up a simple and feasible mathemat
4、ic model to analyze the physical significance of speech characteristic parameter and how to determine itFrom the aspect of its hardware，a designing project of the speech processing system is established on the basis of TMS320VC5402 The project first gives a brief introduction about the composition o
5、f DSP system and then displays its basic frameworkNext ,all elaboration is provided for the parts like selection of chip， module of audio frequency switch，extended memorizer, UART data communication and power voltage switchThe technology of DSP is applied in the designing process From the aspect of
6、softwarethe thesis starts with an introduction about CCS and then about DSP software developing flow At last， a detailed elaboration is given respectively to the designing and analysis of initialization of DSP collection of audio frequency and parallel boot load procedure of TMS320VC5402 The study in the thesis touches upon a part of a speech identification systemA profound exploration has been conducted on the areas like development and
