Which of the following is not the advantage to digitizing analog quantities?( )
A. Numbers are much less sensitive to physical problem
B. Numbers are easier to store than an equivalent physical amount of something.
C. Numbers can be moved through space, using electronic, optical, or acoustic means
D. Numbers are the quantities existed in physical world.
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Which of the following statements about filter is not true?( )
An integrator can act as a filter.
B. The response of second order filter can be obtained by using inductance and capacitance.
C. Resistors, capacitors and amplifiers can form a second order filter.
D. Low pass filters gets the signal with higher frequency passed through.
Which of the following is not the phase of Analog-to-digital conversion? ( )
Anti-aliasing filter
B. Sample and hold
C. Quantization
D. Zero-order hold
The complex frequency's real part helps describe a response to AC signals.
A. 对
B. 错
The length of the sampling interval is the same as the sampling frequency.
A. 对
B. 错
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