【正文】 ?Magic resonance image (MRI) scans ?Music synthesis ?Bar code readers ?Sonar processing ?Satellite image analysis ?Digital mapping ?Cellular telephones ?Digital cameras ?Detection of narcotics and explosives ?Speech synthesis ?Echo cancellation ?Cochlear implants ?Antilock brakes ?Signal and image pression ?Noise reduction ?Companding ?High definition television (HDTV) ?Digital audio ?Encryption ?Motor control ?Remote medical monitoring ?Smart appliances ?Home security ?High speed modems FIGURE 12 Examples of signals. Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. Courtesy Michael Noonan, . Canisus College FIGURE 12 Examples of signals. Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. ? 數(shù)字信號處理的理論部分 ： 指人們?yōu)榱说玫綕M足需要的信號形式而對數(shù)字化的信號進(jìn)行處理的 數(shù)學(xué)原理、方法和手段 ?，F(xiàn)在，掌握和熟練應(yīng)用數(shù)字信號處理器件已經(jīng)成為相關(guān)行業(yè)高級技術(shù)人才的一項(xiàng)重要技能。 1） 理論： 數(shù)字信號處理 的基本內(nèi)容 信號理論 信號分析：用解析的方法表示信號，信號與系統(tǒng) 信號傳輸：用最經(jīng)濟(jì)有效的方法來傳輸最大的信息量，通 信原理 信號處理：基本任務(wù) 信息的采集與獲取：模 數(shù) 信息的重排：抽取、內(nèi)插 信息的壓縮：圖像編碼壓縮 濾波、變換、壓縮、估計(jì)、重排等 2） 實(shí)現(xiàn)方法 (1)在通用的計(jì)算機(jī)上用軟件 (如 Fortran、 C語言 、 Matlab語言 )實(shí)現(xiàn)；速度較慢 ， 一般可用于 DSP算法的模擬 (2) 在通用計(jì)算機(jī)系統(tǒng)中加上專用的加速處理機(jī)實(shí)現(xiàn)； 專用性強(qiáng) ， 應(yīng)用受到很大的限制 (3) 用通用的單片機(jī) （ 如 MCS5 96系列等 ） 實(shí)現(xiàn) ， 這種方法可用于一些不太復(fù)雜的數(shù)字信號處理 ， 如數(shù)字控制等； 只適用于實(shí)現(xiàn)簡單的 DSP算法 (4) 用通用的可編程 DSP芯片實(shí)現(xiàn) 。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. FIGURE 16 Sampleandhold signal. Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. FIGURE 115 Spectrum of middle C (200500 Hz). Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. FIGURE 118 Continued. Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. 第二章 模數(shù)轉(zhuǎn)換和數(shù)模轉(zhuǎn)換 FIGURE 21 Typical digital signal processing system. Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. FIGURE 27 Antialiasing Filter. Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. FIGURE 222 Serial digital bitstream. Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. 。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. DIGITALTOANALOG CONVERSION FIGURE 224 D/A. Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. FIGURE 216 Quantization of unipolar data (maximum error = half step). Joyce Van de Vegte Fundamentals of Digital Signal Processing Copyright 169。2022 by Pearson Education, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. FIGUR