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求问一道题信号处理导论A5kHzsinusoidalsignalissampledat80kHzand64samplesarecollectedandusedtocomputethe64-pointDFTofthissignal.AtwhatDFTindices,k=0,1,…,63wouldyouexpecttoseeanypeaksintheDFT?谢谢
题目详情
求问一道题 信号处理导论
A 5kHz sinusoidal signal is sampled at 80kHz and 64 samples are collected and used to compute the 64-point DFT of this signal. At what DFT indices, k=0,1,…,63 would you expect to see any peaks in the DFT?
谢谢
A 5kHz sinusoidal signal is sampled at 80kHz and 64 samples are collected and used to compute the 64-point DFT of this signal. At what DFT indices, k=0,1,…,63 would you expect to see any peaks in the DFT?
谢谢
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答案和解析
K=64对应于40KHz,所以K=8 对应于5KHz.
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