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Quiz: DSP - Filters

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Number of Questions: 40

Question: 26 -

What is the peak side lobe (in dB) for a Hanning window?

Options:

  1. -13

  2. -58

  3. -32

  4. -27

    5. Answer:

    -32
    Solution:

    The peak side lobe in the case of Hanning window has a value of -32dB.

Question: 27 -

The large side lobes of W(ω) results in which of the following undesirable effects?

Options:

  1. Ringing effects

  2. None of the mentioned

  3. Broadening effects

  4. Circling effects

    5. Answer:

    Ringing effects
    Solution:

    The larger side lobes of W(ω) results in the undesirable ringing effects in the FIR filter frequency response H(ω), and also in relatively large side lobes in H(ω).

Question: 28 -

How does the frequency of oscillations in the pass band of a low pass filter varies with the value of M?

Options:

  1. Increase with increase in M

  2. None of the mentioned

  3. Remains constant with increase in M

  4. Decrease with increase in M

    5. Answer:

    Increase with increase in M
    Solution:

    The frequency of oscillations in the pass band of a low pass filter increases with an increase in the value of M, but they do not diminish in amplitude.

Question: 29 -

What is the peak side lobe (in dB) for a rectangular window?

Options:

  1. -27

  2. -32

  3. -13

  4. -58

    5. Answer:

    -13
    Solution:

    The peak side lobe in the case of rectangular window has a value of -13dB.

Question: 30 -

Which of the following windows has a time domain sequence h(n)=(1/2)(1−cos2πn/(M−1))?

Options:

  1. Blackman window

  2. Hamming window

  3. Bartlett window

  4. Hanning window

    5. Answer:

    Hanning window
    Solution not available.