模块一 单元测试

1、多选题:
Prerequisites of this course include: ( )
选项:
A:Signals and Systems
B:Complex Variables
C:Painting
D:Calculus
答案: 【Signals and Systems;
Complex Variables;
Calculus
】

2、判断题:
If you measure and record your weight everyday, that is a digital signal.( )
选项:
A:对
B:错
答案: 【对】

3、多选题:
What are the advantages of digital signal processing: ( )
选项:
A:Flexible and programmable
B:Reliable and accurate
C:Easy to implement by VLSI
D:Popularity of digital devices
答案: 【Flexible and programmable;
Reliable and accurate;
Easy to implement by VLSI;
Popularity of digital devices
】

4、判断题:
Digital signal processing is something new and does not have a long and rich history. ( )
选项:
A:错
B:对
答案: 【错】

5、判断题:
A speech signal as well as a digital image are typically in 1D. ( )
选项:
A:错
B:对
答案: 【错】

模块二 单元测试

1、判断题:
If an LTI system has an impulse response with finite sample values, and it is FIR, then it is a stable system.( )
选项:
A:错
B:对
答案: 【对】

2、判断题:
If an LTI system has an impulse response with finite sample values, and it is IIR, it is an unstable system. ( )
选项:
A:错
B:对
答案: 【错】

3、单选题:
Given a Sinusoidal sequence . Which of the following is its period? ( )
选项:
A:8
B:4
C:No period
D:16
答案: 【No period】

4、单选题:
Convolution sum is useful for computation of the output if the system is( )。
选项:
A:linear
B:linear & time Invariant
C:time invariant
D:stable
答案: 【linear & time Invariant】

5、单选题:
If the sequence is of length L and the impulse response of an LTI system is of length P. What will be the length after their convolution?( )
选项:
A:L+P
B:P
C:L+P-1
D:L
答案: 【L+P-1】

模块三 单元测试

1、多选题:
The Fourier transform of an aperiodic sequence is( )
选项:
A:Aperiodic
B:Periodic
C:Discrete
D:Continuous
答案: 【Periodic;
Continuous
】

2、单选题:
The eigenfunction of an LTI system is the( )
选项:
A:unit step sequence
B:sinusoidal sequence
C:complex exponential sequence
D:real exponential sequence
答案: 【complex exponential sequence】

3、单选题:
Which of the following is the correct formula for DTFT? ( )
选项:
A:
B:
C:
D:
答案: 【】

4、多选题:
Which of the following is/are corresponding to a low frequency? ( )
选项:
A:
B:0
C:
D:
答案: 【

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