Lecture 2: Analysis of signals from online audio files

Download a section of an audio file from an online database

Read a signal from the downloaded file into Octave signal_in.m (HTML version)

Operations on sequences of numbers

An Octave script for calculating RMS amplitude: rms.m (HTML version)

Local averaging

An Octave script for calculating running means of 4 (HTML version)

Spectral analysis in Octave

Explanation of spectrum.m



Exercises and reading