B.3.4 KHz
C.6.8KHz
D.8 KHz
B.3.4 KHz
C.6.8KHz
D.8 KHz
The spectrum of the signalis. Then the spectrum of the signalis
A、
B、
C、
D、
A、a series of impulses that are proportional to the amplitude of the signal. 与信号幅值成正比的一系列脉冲。
B、a series of impulses that are proportional to the frequency of the signal. 与信号频率成正比的一系列脉冲。
C、digital codes that represent the analog signal amplitude. 表示模拟信号幅值的数字代码。
D、digital codes that represent the time of each sample. 表示每次采样时间的数字代码。
B.denoising
C.modulation
D.anti-aliasingfiltering
A、8.16
B、0.1
C、1.3
D、1.5
then the frequency deviation of the signal is Hz
A、1.25
B、2.5
C、5
D、10
Suppose the length-9 real signal,, and its DTFT is, then=__________.
If the maximum frequency of a given signal,, isHz, and the sampling frequency, then the sampled signal will have aliasing.
If the bandwidth of a band-limited signalis, then the bandwidth of the signalis
A、
B、
C、
D、
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