Questions
1
The selection of the sampling rate Fs=1/T, where T is the sampling interval, not only determines the highest frequency (Fs/2) that is preserved in the analog signal but also serves as a scale factor that influences the design specifications for digital filters.
Answer:True
2
What is the configuration of system for digital processing of an analog signal?
Answer:Analog signal|| Pre-filter -> A/D Converter -> Digital Processor -> D/A Converter -> Post-filter
3
In DM, further the two integrators at encode are replaced by one integrator placed before comparator, and then such system is called?
Answer:Sigma-delta modulation
4
If the input analog signal is within the range of the quantizer, the quantization error eq (n) is bounded in magnitude i.e., |eq (n)| < Δ/2 and the resulting error is called?
Answer:Granular noise
5
If the input analog signal falls outside the range of the quantizer (clipping), eq (n) becomes unbounded and results in _____________
Answer:Overload noise
6
In the mathematical model for the quantization error eq (n), to carry out the analysis, what are the assumptions made about the statistical properties of eq (n)?
i. The error eq (n) is uniformly distributed over the range — Δ/2 < eq (n) < Δ/2.
ii. The error sequence is a stationary white noise sequence. In other words, the error eq (m) and the error eq (n) for m≠n are uncorrelated.
iii. The error sequence {eq (n)} is uncorrelated with the signal sequence x(n).
iv. The signal sequence x(n) is zero mean and stationary.
ii. The error sequence is a stationary white noise sequence. In other words, the error eq (m) and the error eq (n) for m≠n are uncorrelated.
iii. The error sequence {eq (n)} is uncorrelated with the signal sequence x(n).
iv. The signal sequence x(n) is zero mean and stationary.
Answer:i, ii, iii, iv
9
In IIR Filter design by the Bilinear Transformation, the Bilinear Transformation is a mapping from
Answer:S-plane to Z-plane
10
In Bilinear Transformation, aliasing of frequency components is been avoided.
Answer:True
