What to Study?
What to Study?
Semester 6 DTSP weightage
Semester 6 DTSP weightage

Chapter: Transform Analysis of LTI System  (Frequency Response)

(Note: A Chapter with low Weightage)

Topics to be prepared

I want to Just Pass:

  • LTI systems as Frequency-Selective Filters like Low Pass, High Pass, Band Pass, Notch, Comb, All-Pass Filters and Digital Resonators.
  • Invertibility of LTI systems.
  • Minimum-Phase, Maximum-Phase, Mixed-Phase systems.

I want to get good Marks: (As above and plus)

  • Relation between System Function & Frequency Response Function.
  • Computation of the Frequency Response Function.

I want to Score Maximum: (As above and plus)

  • Review of Z Transform and its Properties,
  • Response to –
    1. Sinusoidal and Complex Exponential Signals
    2. Periodic Input Signals
    3. Aperiodic Input Signals

Chapter: Discrete Fourier Transforms (DFT)

(Note: A very easy and high scoring chapter. A must for all students who want to pass DTSP)

Topics to be prepared

I want to Just Pass:

  • Definition and Properties of DFT.
  • DFT as a Linear Transformation.
  • Problems based on
    1. Computation of DFT and IDFT
    2. Circular Convolution using DFT / IDFT
    3. Evaluating DFT using Properties of DFT
    4. Relation between Z-transform, DTFS & DTFT

I want to get good Marks: (As above and plus)

  • Frequency domain Sampling and Reconstruction of DT signals

 I want to Score Maximum: (As above and plus)

 


Chapter: Fast Fourier Transforms (FFT)

(Note: High scoring chapter. A must for all students who want to pass DTSP)

Topics to be prepared

I want to Just Pass:

  • Radix-2 Decimation In Time (DIT) & Decimation In Frequency (DIF) FFT for N = 4, 6, 8 with Flow Graph (or Butterfly diagram).
  • Inverse FFT
  • Problems based on
    1. Computation of DFT and IDFT by FFT
    2. Circular Convolution using DFT/ IDFT by FFT
    3. Comparing Computational Complexity between DFT and FFT

I want to get good Marks: (As above and plus)

  • Twiddle Factor and its Properties
  • DIT-FFT and DIF-FFT algorithms and derivation for N = 4, 8

I want to Score Maximum: (As above and plus)

  • Split-Radix FFT algorithms and derivation for N = 6 (3 ´ 2 or 2 ´ 3) for both DIF & DIT.
  • Split-Radix FFT algorithms and derivation for N = 9 (3 ´ 3)

Chapter: IIR Digital Filters

(Note: A Major Chapter with high Weightage)

Topics to be prepared

I want to Just Pass:

  • Impulse Invariance Method and Aliasing
  • Bilinear Transformation (BLT) Method and Frequency Warping and Pre-Warping.
  • Analog and Digital Frequency Transformations
  • Analog filter approximations: Butterworth Filters
  • Design of IIR digital filters from Analog filters – Order of Filter, Cut-off Frequency, Un-normalized and Normalized Transfer Function

 I want to get good Marks: (As above and plus)

I want to Score Maximum: (As above and plus)

  • Analog filter approximations: Chebyshev Filters

 

Chapter: FIR Digital Filters

 (Note: A Major Chapter with high Weightage)

Topics to be prepared

 I want to Just Pass:

  • Linear Phase Filters – Phase and Group Delay.
  • location of the zeros of linear phase FIR filters.
  • Characteristics of FIR digital filters.
  • Frequency Response.
  • Design of FIR digital filters using window techniques (Rectangular and Hamming), Frequency Sampling Technique.
  • Gibbs phenomenon.
  • Comparison of IIR and FIR filters

 

 I want to get good Marks: (As above and plus)

  • Design of FIR digital filters using window techniques (Triangular, Hanning and Blackman)

 

 I want to Score Maximum: (As above and plus)

  • Design of FIR digital filters using window techniques (Kaiser Window)

 

Chapter: Finite Word Length Effects in Digital Filters

(Note: A chapter from which mostly theory questions are asked)

Topics to be prepared

 I want to Just Pass:

  • Quantization by truncation / rounding.
  • Effects due to truncation and rounding.
  • Analysis of Coefficient Quantization Effects.

I want to get good Marks: (As above and plus)

  • Product Quantization Error.
  • Quantization of fixed-point numbers.
  • Quantization of floating-point numbers

I want to Score Maximum: (As above and plus)

  • Number representation: Fixed Point, Floating Point.
  • Analysis of
    1. A/D Conversion Noise
    2. Arithmetic Round-Off Errors dynamic range scaling

Chapter: Realization structures for IIR and FIR filters

Topics to be prepared

 I want to Just Pass:

  • Direct Form I Structure.
  • Direct Form II Structure.
  • Cascade Structure.
  • Parallel Structure.
  • Lattice-Ladder Structures

 I want to get good Marks: (As above and plus)

  • Frequency Sampling Realization of FIR filters.

 I want to Score Maximum: (As above and plus)

 


Chapter: Multi rate Signal Processing

(Note: Only Theory is asked from this chapter)

Topics to be prepared

I want to Just Pass:

  • Multirate Signal Processing.
  • Decimation by a factor D.
  • Interpolation by I.
  • Sampling Rate Conversion by a rational factor I/D.
  • Multistage implementation of sampling rate conversion.
  • Application of Multirate Signal Processing for
    1. Design of Phase Shifters,
    2. Implementation of Narrowband Low Pass Filters
    3. Sub Band Coding of speech signals

I want to get good Marks: (As above and plus)

  • Polyphase filter structures.
  • Interchange of filters and down samplers/up samplers.
  • Polyphase Structures for Decimation and Interpolation filters.
  • Structures for Rational Sampling Rate Conversion.
  • Sampling Rate Conversion with Cascade Integrator Comb filters.
  • I want to Score Maximum: (As above and plus)
  • Sampling rate conversion of band pass signals.
  • Sampling rate conversion by an arbitrary factor – arbitrary re-sampling with polyphase interpolators, narrow band filter structures.
  • Interfacing of digital systems with different sampling rates,

 

Chapter: Applications of DSP

  (Note: Only Theory is asked from this chapter)

Topics to be prepared

I want to Just Pass:

  • Dual –Tone multi frequency signal detection.
  • Musical Sound Processing.
  • Digital Music Synthesis.
  • Discrete Time Analytic Signal Generation.

 I want to get good Marks: (As above and plus)

  • Spectral Analysis of sinusoidal signals.
  • Spectral Analysis of non-stationary signals
  • Spectral Analysis of random signals

I want to Score Maximum: (As above and plus)

  • Trans-multiplexers.
  • Oversampling ADC and DAC
  • Sparse Antenna Array Design.

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