Digital Signal Processing Chapter 1: Introduction

Discrete-Time Signals and Systems Discrete-time signals

Example sounds Single tone: k02.wav, k04.wavk02.wavk04.wav Machine: whistle.wavwhistle.wav Music: furelise.wavfurelise.wav From: Signal Processing First, by James H. McClellan, Ronald W. Schafer, and Mark A. Yoder, Prentice Hall, 2003.

Frequencies between 0 and 2

The z-Transform The unit circle

Poles, zeros, and region of convergence

Sampling of Continuous-Time Signals Sampling

Example: stb0m15.movstb0m15.mov From: Signal Processing First, by James H. McClellan, Ronald W. Schafer, and Mark A. Yoder, Prentice Hall, 2003.

Sampling of a cosine signal

Sampling effect

Aliasing

Transform Analysis of Linear Time- Invariant Systems

Fourier transform

Structures for Discrete-Time Systems Direct form I

Direct form II

Filter Design Techniques Basic diagram

Low-pass filter

A CEG piano chord

A low pass filter with a cut-off of 456 Hz applied to the CEG chord extracts the signal: filtCEG.wav filtCEG.wav A low pass filter with a cut-off of 361 Hz applied to the CEG chord extracts the signal: filtCE.wav filtCE.wav A low pass filter with a cut-off of 296 Hz applied to the CEG chord extracts the signal: filtC.wav filtC.wav From: Fundamentals of Digital Signal Processing, by Joyce Van de Vegte, Prentice Hall, 2002.

Software Matlab

Hardware DSP 與多媒體 作者：德州儀器無線通訊事業部, g=4&sno=34 g=4&sno=34 業界應用

Summary General overview from wikipedia ssing

References Discrete-Time Signal Processing, Second Edition, by Alan V. Oppenheim, Ronald W. Schafer, and John R. Buck, Prentice Hall, Fundamentals of Digital Signal Processing, by Joyce Van de Vegte, Prentice Hall, Signal Processing First, by James H. McClellan, Ronald W. Schafer, and Mark A. Yoder, Prentice Hall, 2003.