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Quiz: DSP - Filters

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Number of Questions: 40

Question: 36 -

The incorrect statement about the effects of windowing in filters is:

Options:

  1. The windowing concept in the time domain results in the smoothing in the frequency domain.

  2. None of the above

  3. It helps in converting an infinite duration signal into finite.

  4. The concept of windowing introduces side lobes.

    5. Answer:

    None of the above
    Solution not available.

Question: 37 -

Which of the following represents the bandwidth of the filter?

Options:

  1. ωP-ωS

  2. ωP+ ωS

  3. -ωP+ ωS

  4. None of the mentioned

    5. Answer:

    -ωP+ ωS
    Solution:

    If ωP and ωS represents the pass band edge ripple and stop band edge ripple, then the transition width -ωP+ ωS gives the bandwidth of the filter.

Question: 38 -

The window technique whose main lobe width is 12pi/N is called:

Options:

  1. Hamming window

  2. Rectangular window.

  3. Kaiser window

  4. Blackmann window

    5. Answer:

    Blackmann window
    Solution not available.

Question: 39 -

The method responsible for introducing the aliasing effect in filters is:

Options:

  1. None

  2. Impulse invariant method.

  3. Bilinear transformation method.

  4. Both 

    5. Answer:

    Impulse invariant method.
    Solution not available.

Question: 40 -

Linear phase response of the filter is defined as:

Options:

  1. None of the above.

  2. When the phase response of the system does not vary linearly with the frequency function.

  3. When the phase response of the system varies inversely with the frequency function.

  4. When the phase response of the system varies linearly with the frequency function.

    5. Answer:

    When the phase response of the system varies linearly with the frequency function.
    Solution not available.