test1.txt

最近看到有人提问怎样用FFT实现频谱分析

 0.000000	  0.000000	  1.000000
  0.001000	  0.018848	  0.999822
  0.002000	  0.037690	  0.999289
  0.003000	  0.056519	  0.998402
  0.004000	  0.075327	  0.997159
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  0.007000	  0.131564	  0.991308
  0.008000	  0.150226	  0.988652
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  0.057000	  0.879316	  0.476238
  0.058000	  0.888136	  0.459580
  0.059000	  0.896641	  0.442758
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  0.070000	  0.968583	  0.248690
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  0.075000	  0.987688	  0.156434
  0.076000	  0.990461	  0.137790
  0.077000	  0.992883	  0.119097
  0.078000	  0.994951	  0.100362
  0.079000	  0.996666	  0.081591
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  0.083000	  0.999980	  0.006283
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  0.152000	  0.272952	 -0.962028
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