数字信号处理课件

数字信号处理Digital Signal Processing 电子信息工程系韩建峰

Sections

♦About DSP course.♦What is DSP?

♦Why use DSP?

♦Realization of DSP.♦Signals and systems.♦DSP systems.

Reading assignments This lecture •Chapter 1: Introduction

About DSP course

•48学时

•考核方式：

平时成绩占30％

（包含作业、测验、出勤、课堂表现）考试成绩占70％

•考试方式：

笔试、闭卷、英文命题

•英文影印版（教材）

–书名: Signal Processing First

–著者: James H. McClellan，

Ronald W. Schafer，

Mark A. Yoder

–出版社：科学出版社

–标准书号：7-03-011618-6/TN.488–出版时间：2003-12-30

–定价：￥45.00

–附注：含光盘

•中文翻译版（参考书）–信号处理引论

–作者：James H. McClellan

–译者：周利清

–出版社：电子工业出版社

–ISBN书号：7-121-00637-5 –出版日期：2005年4月

–定价:48.0元

•Preview & Review

–See handouts

•Do more exercise

–《数字信号处理》双语学习

及MATLAB实验指导书

–Companion CD-ROM

•Do more computer experiments –MATLAB

–《数字信号处理》双语学习

及MATLAB实验指导书

•Download from

精品课程网站

网络教学\课程

•Do the homework by computer.

(Matlab, word, MathType)

•And send the homework to 网络教学on time.

COURSE OBJECTIVE

•Students will be able to:

Understand mathematical descriptions of signal processing algorithms and express those algorithms as computer implementations (MATLAB)

•What are your objectives?

What is DSP?

•Digital Signal Processing

--A method for processing signals.

•Digital Signal Processor

--A special type of microprocessor most suitable to do math, esp. DSP algorithm.

DSP devices around us

Digital Media Processing

Webpad

Telematics

Wireless Devices:

802.11, Bluetooth,

Others

Military and

Government Cellular,

Secure Connectivity Industry-Specific

PDAs

Biometrics

Medical

Devices

Why use DSP?

Parameter

Analog Signal Digital Signal Processing Processing

容错能力

1-10%.003%灵敏度（漂移）Temp,Time None Noise Floor

60dB typ

90+dB

灵活性（适应性）Hard, Expensive Easy, Low Cost 增益调节Hand tuning Auto tuning 重新设计New Board New Code

布局Noise Sensitive Digital Immunity 高级功能

Hardware Intensive Additional Software 多种处理能力Multiple Hardware More MIPS & Software 大小Larger

Smaller 可靠性

Lower

Higher

精度高

灵活性强集成度高高性能

Realization of DSP

•软件实现：利用现成或自编代码，借助通用计算机易修改、速度慢，不能实时－－应用于科研、教学

•硬件实现：运算单元电路（加法器、乘法器、延时器）搭建

速度快、不灵活

•通用、或专用DSP芯片

Providers of DSP

•Analog Device：AD2181,AD21062•Lucent: 16210•Motorola: 56305

•Texas Instrument TMS320 serial