上传者: shenhao2007
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上传时间: 2021-10-14 21:26:39
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文件大小: 145KB
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文件类型: -
A continuous-time signal xa(t) is composed of a linear combination of sinusoidal signals of frequencies 250Hz, 450Hz, 1.0 kHz, 2.75 kHz and 4.05 kHz. The signal xa(t) is sampled at a