数字信号处理原理.pptVIP

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2019-07-13 发布于湖北
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数字信号处理原理.ppt

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数字信号处理基础安冬第一章数字信号处理概述 FIGURE 1-1 Applications of DSP. FIGURE 1-2 Examples of signals. FIGURE 1-2 Examples of signals. FIGURE 1-2 Examples of signals. FIGURE 1-2 Examples of signals. FIGURE 1-2 Examples of signals. FIGURE 1-2 Examples of signals. FIGURE 1-3 Black and white image. ?S. FIGURE 1-4 Four frames from high-speed video sequence. “ Vision Research, Inc., Wayne, NJ., USA. FIGURE 1-4 Four frames from high-speed video sequence. “ Vision Research, Inc., Wayne, NJ., USA. FIGURE 1-4 Four frames from high-speed video sequence. “ Vision Research, Inc., Wayne, NJ., USA. FIGURE 1-4 Four frames from high-speed video sequence. “ Vision Research, Inc., Wayne, NJ., USA. FIGURE 1-11 A/D and D/A conversion. FIGURE 1-5 Analog voltage signal. FIGURE 1-6 Sample-and-hold signal. FIGURE 1-7 Quantization and digitization. FIGURE 1-8 Digital signal. FIGURE 1-9 Zero order hold signal. FIGURE 1-10 Recovered analog signal after smoothing. FIGURE 1-13 Signals and spectra. FIGURE 1-13 Signals and spectra. FIGURE 1-14 A single piano note (middle C) and its time trace. FIGURE 1-15 Spectrum of middle C (200-500 Hz). FIGURE 1-16 A piano chord (CEG) and its time trace. FIGURE 1-17 Spectrum of CEG chord (200-500 Hz). FIGURE 1-18 Examples of spectra. FIGURE 1-18 Continued. FIGURE 1-18 Continued. FIGURE 1-18 Continued. FIGURE 1-18 Continued. FIGURE 1-18 Continued. FIGURE 1-19 Bass, tenor, alto, and soprano singing ranges. FIGURE 1-20 Low pass filter to extract bass voices. FIGURE 1-21 High pass filter to extract soprano voices. FIGURE 1-22 Band pass filter to extract alto voices. FIGURE 1-23 Spectrum for CEG chord (250-2500 Hz). FIGURE 1-24 Low pass filtering a piano chord FIGURE 1-24 Continued. 第二章模数转换和数模转换 FIGURE 2-1 Typical digital signal processing system. SAMPLING The sampling interval, or sampling period is the time in seconds between sampling points. The samp