1 / 40

Digital Signal Processing

Digital Signal Processing. Electrical Engineering Department Iran University of Science & Tech. Digital Signal Processing Topic 1: Introduction. 1. Course overview 2. Digital Signal Processing 3. Basic operations & block diagrams 4. Classes of sequences. 1. Course Overview.

saima
Download Presentation

Digital Signal Processing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Digital Signal Processing Electrical Engineering Department Iran University of Science & Tech. DSP Course-IUST-Spring Semester

  2. Digital Signal ProcessingTopic 1: Introduction 1. Course overview 2. Digital Signal Processing 3. Basic operations & block diagrams 4. Classes of sequences DSP Course-IUST-Spring Semester

  3. 1.Course Overview • Digital signal processing: Modifying signals with computers • Web site: http://eeprofs.iust.ac.ir/rezairad/dsp • Book: Oppenheim “Digital Signal Processing” Mitra “Digital Signal Processing” • Instructor: rezai@iust.ac.ir DSP Course-IUST-Spring Semester

  4. Grading Structure • Homeworks: 20% • Mainly from Oppenheim • Sunday-sunday schedule • Collaborate, don’t copy • Midterm: 20% • One session • Final exam: 30% • Project: 20% • Class Works: 10% • Brief representation DSP Course-IUST-Spring Semester

  5. Course Project • Goal: hands-on experience with DSP • Practical implementation • Work alone • Brief report, optional presentation • Recommend MATLAB • Titles on website DSP Course-IUST-Spring Semester

  6. Course at a glance DSP Course-IUST-Spring Semester

  7. 2. Digital Signal Processing • Signals: Information-bearing function • E.g. sound: air pressure variation at a point as a function of time p(t) • Dimensionality: Sound: 1-Dimension Grayscale image i(x,y) : 2-D Video: 3 x 3-D: {r(x,y,t) g(x,y,t) b(x,y,t)} DSP Course-IUST-Spring Semester

  8. Example signals • Noise - all domains • Acoustic • ECG, EEG - biological • Radar • Image/video - compression • etc… DSP Course-IUST-Spring Semester

  9. Signal processing • Modify a signal to extract/enhance/rearrange the information • Origin in analog electronics e.g. radar • Examples… • Noise reduction • Data compression • Representation for recognition/classification… DSP Course-IUST-Spring Semester

  10. Digital Signal Processing • DSP = signal processing on a computer • Two effects: discrete-time, discrete level DSP Course-IUST-Spring Semester

  11. DSP vs. analog SP DSP Course-IUST-Spring Semester

  12. Digital vs. analog • Pros • Noise performance - quantized signal • Use a general computer - flexibility, upgrde • Stability/duplicability • Novelty • Cons • Limitations of A/D & D/A • Baseline complexity / power consumption DSP Course-IUST-Spring Semester

  13. 3. Operations on signals DSP Course-IUST-Spring Semester

  14. Sequences DSP Course-IUST-Spring Semester

  15. Left- and right-sided DSP Course-IUST-Spring Semester

  16. Operations on sequences DSP Course-IUST-Spring Semester

  17. More operations DSP Course-IUST-Spring Semester

  18. Time shifting DSP Course-IUST-Spring Semester

  19. Combination of basic operations DSP Course-IUST-Spring Semester

  20. Up- and down-sampling DSP Course-IUST-Spring Semester

  21. Down-sampling DSP Course-IUST-Spring Semester

  22. Down-sampling DSP Course-IUST-Spring Semester

  23. Up-sampling DSP Course-IUST-Spring Semester

  24. Up-sampling DSP Course-IUST-Spring Semester

  25. Complex numbers DSP Course-IUST-Spring Semester

  26. Complex math DSP Course-IUST-Spring Semester

  27. Complex conjugate DSP Course-IUST-Spring Semester

  28. 4. Classes of sequences DSP Course-IUST-Spring Semester

  29. Classification by symmetry DSP Course-IUST-Spring Semester

  30. Conjugate symmetric decomposition DSP Course-IUST-Spring Semester

  31. Basic sequences DSP Course-IUST-Spring Semester

  32. More basic sequences DSP Course-IUST-Spring Semester

  33. Exponential sequences DSP Course-IUST-Spring Semester

  34. Complex exponentials DSP Course-IUST-Spring Semester

  35. Complex exponentials DSP Course-IUST-Spring Semester

  36. Periodic sequences DSP Course-IUST-Spring Semester

  37. Periodic exponentials DSP Course-IUST-Spring Semester

  38. Symmetry of periodic sequences DSP Course-IUST-Spring Semester

  39. Sampling sinusoids DSP Course-IUST-Spring Semester

  40. Aliasing DSP Course-IUST-Spring Semester

More Related