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Which outcome occurs when the cutoff frequency reduces below a signal's peak frequency, passing through a Butterworth filter?

A)Signal undergoes amplitude envelope distortion
B)Signal reflects impedance discontinuities
C)Filter induces group delay distortions
D)Increased amplifier thermal runaway risk

💡 Explanation

The signal undergoes amplitude envelope distortion because frequency components are attenuated unequally leading to non-linear distortions; the Butterworth filter's steep roll-off causes this, rather than impedance matching issues or thermal increases, therefore altering the amplitude.

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