ECE 485: Digital Audio Processing (SP19)

Course Information

• Syllabus (updated 01/09/19)
  

  • Lecture: 1:25 - 2:40 MW @ Teer 106
    

  • Office Hour: 3:00 - 4:00 Tu @ Gross 305

• Recommended Textbooks

  • Course Notes

• Supplemental Materials

  • Principles of Digital Audio by Ken Pohlmann (PDA)
    

  • Discrete-Time Signal Processing by Oppenheim and Schafer, 3rd Ed. (DTSP)

  • Signals and Systems by Oppenheim, Willsky, and Hamid, 2nd Ed. (SSOW)

  • Digital Signal Processing by Proakis and Manolakis, 4th Ed. (DSP-4)

  • Probability Review: See Chap. 1-3 of Bertsekas-Tsitsikilis or Chap. 1-8 of Probability Notes

• Teaching Assistant:

  • TA: Chance Fleeting (chance.fleeting@duke.edu)
    

Lecture Notes, Reading, and Slides

• Course Introduction
  

• Math Review

• Discrete-Time Signals and Systems Review

• Table of DTFT Transform Pairs

• Table of Z Transform Pairs

• MATLAB FIR filter design example

• Discrete-Time Signal Processing Notes

• Filter Banks, Short-Time Fourier Analysis, and the Phase Vocoder

• Spatial Signal Processing

• Quantization

• Audio Effects in MATLAB

• Lossy Compression and the MDCT

Assignments

• DSP Audio Primer with audio files: guitar4.wav – guitar6.wav
  

• Lab 0
  

• Homework 1

• Lab 1 and data file: ultra_text.txt
  

• Homework 2

• Homework 3 – singing8.wav – singing44.wav
  

• Lab 2 – guitar1.wav
  

• Lab 3 – notawhisper.wav – whisper.wav
  

• Lab 4
  

• Final Project
  

• Lab 5 – target.wav – mic_1_4.wav – mic_2_4.wav – mic_3_4.wav – mic_4_4.wav
  

Other Books, Papers, and Web Resources

Miscellaneous

• Acoustics and Vibration Animations

• Physical Modeling using Digital Waveguides

• Simple derivation of the wave equation

• Slow motion video of bowed violin string

• Music Acoustics

• Auralization Audio Database

• Sound localization from a class on perception

• 3D Sound HRTFs

• Sound Blaster 3D Sound Demo (use in-ear headphones)

• QSound Labs Virtual Barbershop (use in-ear headphones)

• QSound Demos for Desktop Stereo Speakers

• Guitar String Physical Parameters

• Automatically Generating VST Plugins from MATLAB Code

• Design an Audio Plugin Matlab Tutorial

MATLAB Resources

• Quick MATLAB Tutorial

• Introduction to Matlab by David Houcque
  

• Introduction by Ross Spencer
  

Data Resources

• Links to labeled audio for machine learning

• Speech Processing for Machine Learning

• Vowels

Papers

• History of Signal Processing

• Sigma-Delta ADCs: Basic Idea and Advanced Concepts

• Noise Shaping for Digital Mastering: Minimally Audible Noise Shaping by Lipshitz et al.

• Phase vocoder 1966 paper by Flanagan and Golden
  

• Modified DCT (MDCT) overlapped transform 1986 paper by Princen and Bradley
  

DSP and Audio via Wikipedia

• Audio Signal Processing

• Digital Signal Processing

• Digital Signal Processor