Audio Signal Processing

My demo lectures and assignments for the course "Audio Signal Processing" offered by Universitat Pompeu Fabra trough Coursera (online course).

Week 1

On week #1 we received a quick review on the basic mathematical concepts of audio signal processing. We cover the following topics:

• Sinusoidal signals
• Complex numbers
• Fourier transform
• Euler's formula
• Scalar product of two vectors (sequences)
• Even and odd functions
• Convolution

We also covered the basics of Python for audio manupilation.

Assignment 1

In this assignment we got introduced to:

• utilFunttions.py module in sms-tools package
  • Functions for reading and writing audio files which handles amplitude normalization
• Basic sample manipulation:
  • Array indexing and slicing
  • Down-sampling: we discovered the effects of down-sampling on the quality of the audio signal