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← ScienceWhich outcome results when the sampling frequency is insufficient for a continuous function?
A)Data interpolation reconstructs altered frequency
B)Spectrum folding induces signal aliasing✓
C)Noise cancellation creates stable harmonics
D)Higher resolution enhances noise floor
💡 Explanation
Spectrum folding induces signal aliasing because undersampling causes confusion between high and low frequencies due to violating the Nyquist-Shannon sampling theorem. Therefore, aliasing occurs, rather than accurate reconstruction, because undersampling creates spurious frequencies.
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