Description: Signal do FFT can only be seen in the 0 to the analysis frequency (half the sampling frequency) relative distribution, or get to the sampling frequency normalized frequency. Sampling frequency is the sampling frequency, refers to the number of times per second to obtain the signal samples. Therefore, the sampling frequency is 1/(delta t), which collected two consecutive delta t is the time interval signal. Sampling frequency/frequency resolution = sampling points.
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FFT的matlab程序.doc
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