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EP1S25F780C7N Price

6 What is the sampling and sample recovery?

In Electronic Infomation Category: 6 | on November 02,2011

(1) of the continuous signal such as the formation of the sampling interval sampling signal, sampling the signal spectrum is continuous spectrum with a sampling frequency of the signal cycle of the periodic extension form. (2) the signal of the highest cutoff frequency fi, the sampling frequency f2, if the sampling frequency f2 2fi, then let the sampling signal through a cut-off frequency fi of the ideal low-pass filter, the summer can be uniquely recovered the original signal (which is the Nyquist sampling law), otherwise it will cause the sampled signal spectrum aliasing, it is impossible to restore the original signal without distortion. but considering the actual sampling of the analog signal is not a sharp cutoff of the spectrum (an ideal rectangular characteristic), the highest ...

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