18-491/691 Digital Signal Processing: Lectures

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This page will provide MATLAB files scripts and lecture-specific handouts.

MATLAB files used in the lectures

Lecture notes (some from previous years)

• Intro to DSP PowerPoint (January 18)
• Convolution examples (January 27) (from 2015)
  
• Working with delta functions [from the ADSP class notes] (January 27)
• Introduction to the DTFT (January 26) [from 2019]
• Intro to the Z-transform Powerpoint (February 1)
• Notes on Z-transform properties and inverses (February 6 and 8) [from 2019]
• (Optional) notes on solution to difference equations (Not covered in lectures, from 2019)
• (Optional) Inverse Z-transforms via contour integration (from OS2)
• Frequency response from pole/zero locations Powerpoint (February 13)
• Notes on allpass, minimum phase, and linear phase systems (February 13)
• Notes on continuous-time and discrete-time sampling from ADSP (February 15 and 20)
• Notes on the DTFS and the DFT (February 21-23) [from 2019]
• Non-radix-2 FFT structures (from OS75) (March 20)
• The FIR frequency-sampling structure (March 27) [from 2019]
• IIR filter design examples (April 3)
• Intro to 18-792 ADSP (April 3)
• Notes on the FIR frequency-sampled design (Sec. 5.6.1 from OS75) (April 12)
• Chapter on STFTs in the ADSP notes (April 19)
• Chapter on STFTs by Nawab and Quatieri (April 19)
• Chapter on adaptive filters in the ADSP notes (April 24)
• Chapter on adaptive filters by Stearns (April 24)
• Chapter on 2-D DSP by Lim (April 24)

In-class notes from lectures and recitations

• Lecture 1: Introduction to 18-491/18-691  (January 18)
• Lecture 3: Intro to discrete-time signals and systems; convolution (January 21)
• Lecture 4: DT processing in the frequency domain: the DTFT (January 25)
• Lecture 5: DTFT examples and properties (January 30)
• Lecture 6: Introduction to Z-transforms (February 1)
• Lecture 7: Z-transform properties and inverses; intro to difference equations (February 6)
• Lecture 8: ZT inverses II; Frequency response from pole/zero locations (February 8)
• Lecture 9: Frequency response from Pole/zero locations, allpass, minimum phase, and linear phase systems (February 13)    Link to video lecture
• Lecture 10 Sampling continuous-time signals (February 15)
• Lecture 11: Discrete-time decimation and interpolation (February 20)
• Lecture 12: Intro to the DTFS; DTFTs of periodic time functions (February 22)
• Lecture 13: Introduction to the DFT: examples, properties, and  circular convolution (February 27)
• Lecture 15: Linear versus circular convolution: the overlap-add and overlap-save algorithms (March 13)
• Lecture 16: Introduction to the FFT (March 15)    Powerpoint presentation    Link to video lecture
• Lecture 17: FFT alternate structures (March 20)   Powerpoint presentation
• Lecture 18: IIR filter structures (March 22)
• Lecture 19: FIR filter structures (March 27)
• Lecture 20: Intro to IIR filter design (March 29)
• Lecture 21: IIR filter design examples (April 3)
• Lecture 23: FIR filter design using windows (April 10)   OSYP Table 7.2
• Lecture 24: Kaiser windows, FIR frequency sampling design, digital-to-digital frequency transformations (April 12)
• Lecture 25: FIR filter design using the Parks-McClellan algorithm (April 17)
• Lecture 26: Introduction to the Short-Time Fourier Transform (STFT) (April 19)   Powerpoint
• Lecture 27: Intro to adaptive filtering (Aprill 24 ) Powerpoint
• Lecture 28: Intro to 2-dimensional DSP (April 26)    Powerpoint

• Recitation 1 Convolution (January 27)  Notes, Section A; Notes, Section B
• Recitation 2 DTFTs (January 28) Notes, Section A; Notes, Section B
• Recitation 3 Z-transforms (February 10) Notes, Section A; Notes Section B
• Recitation 4 (February 17) Notes, Section A; Notes Section B
• Recitation review for Quiz 1 (February 24) Notes, Section A; Notes, Section B
• General review for Quiz 1 (February 27)    Link to Zoom video
• Recitation 5 Decimation and interpolation; DTFS and DFTs (March 3)     Link to Zoom video
• Recitation 6 Linear versus circular convolution (March 17)    Notes Section A;   Notes Section B
• Recitation 7 (March 24) Notes, Section A; Notes, Section B
• Recitation review for Quiz 2 (March 31) Notes, Section A; Notes, Section B
• General review for Quiz 2 (April 3)    Link to Zoom video
• Recitation 8 (April 7) Notes, Section A; Notes, Section B
• Recitation 9 (April 21) Notes, Section A; Notes, Section B
  
• Link to Zoom video, Section A
• Link to Zoom video, Section B
• Recitation review for  Q3 (April 30) Notes
• Link to Zoom video
• Recitation review for  Q3 (April 30) Notes
• Link to Zoom video