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Graphics Interchange Format  |  1996-07-30  |  36KB  |  459x512  |  4-bit (15 colors)

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OCR: FIGURE 1 Second-order filter. 15 0=0.2 10 - 0,4 5- 1.2 -5 1.6- Ist order -10- 2.0 -15 -20 Gain. dB -25 30 -35 -40 -45 - 0.01 10 Normalized Frequency

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