If the spectrum of a signal is discrete and periodic, then the corresponding time domain signal is_____. ( )
A: continue and periodic
B: continue and aperiodic
C: discrete and periodic
D: discrete and aperiodic
A: continue and periodic
B: continue and aperiodic
C: discrete and periodic
D: discrete and aperiodic
举一反三
- In the time domain， the procedure of restoring the original continuous-time signal from discrete sample values is called_______
- what is an analog signal? A: Analog signal is a continous values B: Analog signal is a discrete values C: Analog signal is sometimes continous,sometimes discrete
- Which of the following functions can a timer in a computer system be used to achieve? A: Generate interrupt signal regularly B: Measuring the frequency of external periodic signals C: Generate periodic pulse signals D: Generate periodic sine wave
- Comparing with an analog signal assuming a continuous range of values, a digital signal assumes discrete values, usually two permitted values.
- what is a digital signal? () A: discrete signals B: continuous signals C: both of a and b D: signals exist in the world