Digital Signal Processing – Multiple Choice Questions (MCQs)

1. 85. The bit reversal property is associated with the efficient computation of:

   • A. DFT
   • B. FFT
   • C. Z-Transform
   • D. Convolution

2. 86. The zero-order hold (ZOH) is a common method for reconstructing an analog signal from its samples by holding the value of each sample until the next sample occurs. Its frequency response is a:

   • A. Sinc function
   • B. Rectangular pulse
   • C. Triangle
   • D. Exponential

3. 87. The overlap-save method for linear convolution is generally more efficient when processing ________ input data streams.

   • A. Short
   • B. Long
   • C. Periodic
   • D. Aperiodic

4. 88. The maximum possible value of the signal-to-quantization noise ratio (SQNR) for an N-bit quantizer is approximately proportional to:

   • A. N
   • B. N²
   • C. 2^N
   • D. 2N

5. 89. The gain of a digital filter at DC (zero frequency) can be found by evaluating its transfer function H(z) at z = :

   • A. 0
   • B. 1
   • C. -1
   • D. ∞

6. 90. The filter that passes all frequencies equally but shifts the phase of the components is known as an:

   • A. All-pass filter
   • B. Linear phase filter
   • C. Ideal filter
   • D. Constant gain filter