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Digital Signal Analysis & Processing

Digital Signal Analysis & Processing involves the "logical" conversion and manipulation of real-world signals into digital form for "technical clarity" and enhancement. It utilizes "circuit-based technical materials" to perform operations like filtering and compression, which are essential for "university programs" and "Business Information Systems".

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Digital Signal Analysis and Processing

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Course Title: Digital Signal Analysis and Processing

Course No: CT 704

Nature of the Course: Theory + Lab

Semester: 7

Full Marks: 80 + 20 + 50

Pass Marks: 32 + 8 + 20

Credit Hours: 3

Course Description

Course Objectives

Course Contents

1. Discrete Time Signals and Systems

8 hrs

1.1. Discrete time signal, basic signal types

1.2. Energy signal, power signal

1.3. Periodicity of discrete time signal

1.4. Transformation of independent variable

1.5. Discrete time Fourier series and properties

1.6. Discrete time Fourier transform and properties

1.7. Discrete time system properties

1.8. Linear time invariant (LTI) system convolution sum, properties of LTI system

1.9. Frequency response of LTI system

1.10. Sampling of continuous time signal, spectral properties of sampled signal

4 hrs

2.1. Definition, convergence of Z-transform and region of convergence

2.2. Properties of Z-transform (linearity, time shift, multiplication by exponential sequence, differentiation, time reversal, convolution, multiplication)

2.3. Inverse z-transform by long division and partial fraction expansion

3. Analysis of LTI System in Frequency Domain

6 hrs

3.1. Frequency response of LTI system, response to complex exponential

3.2. Linear constant co-efficient difference equation and corresponding system function

3.3. Relationship of frequency response to pole-zero of system

3.4. Linear phase of LTI system and its relationship to causality

4. Discrete Filter Structures

8 hrs

4.1. FIR filter, Structures for FIR filter (direct form, cascade, frequency sampling, lattice)

4.2. IIR filter, structures for IIR filter (direct form I, direct form II, cascade, lattice, lattice ladder)

4.3. Quantization effect (truncation, rounding), limit cycles and scaling

5. FIR Filter Design

6 hrs

5.1. Filter design by window method, commonly used windows (rectangular window, Hanning window, Hamming window)

5.2. Filter design by Kaiser window

5.3. Filter design by frequency sampling method

5.4. Filter design using optimum approximation, Remez exchange algorithm

6. IIR Filter Design

6 hrs

6.1. Filter design by impulse invariance method

6.2. Filter design using bilinear transformation

6.3. Design of digital low pass Butterworth filter

6.4. Properties of Chebyshev filter, properties of elliptic filter, properties of Bessel filter, Spectral transformation

7. Discrete Fourier Transform

7 hrs

7.1. Discrete Fourier transform (DFT) representation, properties of DFT (linearity, time shift, frequency shift, conjugation and conjugate symmetry, duality, convolution, multiplication), circular convolution

7.2. Fast Fourier Transform (FFT) algorithm (decimation in time algorithm, decimation in frequency algorithm)

7.3. Computational complexity of FFT algorithm

Laboratory Works

1.Introduction to DSP tools
2.Signal generation and manipulation
3.Convolution
4.Cascade of second order systems
5.IIR filter
6.FIR filter

Reference Books

1.Alan V. Oppenheim, Ronald W. Schafer, John R. Buck, Discrete-Time Signal Processing, Pearson Education.
2.John G. Proakis, Dimitris G. Manolakis, Digital Signal Processing, Prentice Hall.

Notes:

Source:

A course introducing digital signal processing techniques and algorithms including discrete time signals, Z-transform, LTI system analysis, filter structures, FIR and IIR filter design, and Discrete Fourier Transform.

To introduce digital signal processing techniques and algorithms.

Practical sessions covering DSP tools, signal generation and manipulation, convolution, cascade of second order systems, IIR filter, and FIR filter.

This syllabus follows the official BEI curriculum of Tribhuwan University. In case of any doubt or revision, the university's published syllabus shall be considered authoritative.