Translations:The Nyquist frequency/16/en

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Figure 7.  (a) Actual signal of frequency 175 Hz, with the same sample points as its aliased signal of frequency 250 - 175 = 75 Hz. (b) Actual signal of frequency 150 Hz, with the same sample points as its aliased signal of frequency 250 - 150 = 100 Hz. (c) Actual signal of frequency 125 Hz, with the same sample points as its aliased signal of frequency 250 - 125 = 125 Hz.