About this Course
4.8
183 ratings
50 reviews
100% online

100% online

Start instantly and learn at your own schedule.
Flexible deadlines

Flexible deadlines

Reset deadlines in accordance to your schedule.
Intermediate Level

Intermediate Level

Hours to complete

Approx. 50 hours to complete

Suggested: 10 weeks of study, 8 hours/week...
Available languages

English

Subtitles: English...

Skills you will gain

Digital Signal ProcessingSignal ProcessingPython ProgrammingFft Algorithms
100% online

100% online

Start instantly and learn at your own schedule.
Flexible deadlines

Flexible deadlines

Reset deadlines in accordance to your schedule.
Intermediate Level

Intermediate Level

Hours to complete

Approx. 50 hours to complete

Suggested: 10 weeks of study, 8 hours/week...
Available languages

English

Subtitles: English...

Syllabus - What you will learn from this course

Week
1
Hours to complete
6 hours to complete

Introduction

Introduction to the course, to the field of Audio Signal Processing, and to the basic mathematics needed to start the course. Introductory demonstrations to some of the software applications and tools to be used. Introduction to Python and to the sms-tools package, the main programming tool for the course....
Reading
11 videos (Total 126 min), 1 reading, 2 quizzes
Video11 videos
Welcome4m
Introduction to Audio Signal Processing13m
Course outline10m
Basic mathematics16m
Introduction to Audacity9m
Introduction to SonicVisualizer10m
Introduction to sms-tools17m
Introduction to Python11m
Python and sounds13m
sms-tools software14m
Reading1 reading
Advanced readings and videos10m
Quiz1 practice exercise
Basics20m
Week
2
Hours to complete
5 hours to complete

Discrete Fourier transform

The Discrete Fourier Transform equation; complex exponentials; scalar product in the DFT; DFT of complex sinusoids; DFT of real sinusoids; and inverse-DFT. Demonstrations on how to analyze a sound using the DFT; introduction to Freesound.org. Generating sinusoids and implementing the DFT in Python....
Reading
6 videos (Total 78 min), 1 reading, 2 quizzes
Video6 videos
DFT 216m
Analyzing a sound8m
Introduction to Freesound12m
Sinusoids14m
DFT15m
Reading1 reading
Advanced readings and videos10m
Quiz1 practice exercise
DFT20m
Week
3
Hours to complete
5 hours to complete

Fourier theorems

Linearity, shift, symmetry, convolution; energy conservation and decibels; phase unwrapping; zero padding; Fast Fourier Transform and zero-phase windowing; and analysis/synthesis. Demonstration of the analysis of simple periodic signals and of complex sounds; demonstration of spectrum analysis tools. Implementing the computation of the spectrum of a sound fragment using Python and presentation of the dftModel functions implemented in the sms-tools package....
Reading
7 videos (Total 99 min), 1 reading, 2 quizzes
Video7 videos
Fourier properties 213m
Periodic signals11m
Complex sounds9m
Spectrum13m
Fourier properties23m
dftModel13m
Reading1 reading
Advanced readings and videos10m
Quiz1 practice exercise
Fourier properties20m
Week
4
Hours to complete
5 hours to complete

Short-time Fourier transform

STFT equation; analysis window; FFT size and hop size; time-frequency compromise; inverse STFT. Demonstration of tools to compute the spectrogram of a sound and on how to analyze a sound using them. Implementation of the windowing of sounds using Python and presentation of the STFT functions from the sms-tools package, explaining how to use them. ...
Reading
6 videos (Total 90 min), 1 reading, 2 quizzes
Video6 videos
STFT 216m
Spectrogram10m
Analyzing a sound14m
Windows16m
STFT14m
Reading1 reading
Advanced readings and videos10m
Quiz1 practice exercise
Short-time Fourier transform20m

Instructors

Avatar

Xavier Serra

Full Professor
Dept. of Information and Communication Technologies, UPF
Avatar

Prof Julius O Smith, III

Professor of Music and (by courtesy) Electrical Engineering
CCRMA

About Universitat Pompeu Fabra of Barcelona

Pompeu Fabra University (UPF) is a modern public university, conveniently located in the centre of Barcelona (Spain) with the aim of providing top quality education and standing out as a research-based university. UPF is both a specialised university with a unique teaching model and a cutting-edge research institution. UPF places a strong emphasis on quality teaching, based on comprehensive education and student-centred learning, and innovation in the learning processes. UPF’s MOOCs are produced within this general goal....

About Stanford University

The Leland Stanford Junior University, commonly referred to as Stanford University or Stanford, is an American private research university located in Stanford, California on an 8,180-acre (3,310 ha) campus near Palo Alto, California, United States....

Frequently Asked Questions

  • Once you enroll for a Certificate, you’ll have access to all videos, quizzes, and programming assignments (if applicable). Peer review assignments can only be submitted and reviewed once your session has begun. If you choose to explore the course without purchasing, you may not be able to access certain assignments.

  • Yes, there is no fee in this course. You can follow the course, do the assignments, and obtain a final grade completely for free.

  • No, we do not offer this option.

  • All the materials and tools for the class are available online under open licences.

  • No, it is self-contained.

  • All the assignments start from some existing Python code that the student have to understand and modify. Some programming experience is necessary.

  • You will play around with sounds a lot, analysing them, transforming them, and making interesting new sounds.

More questions? Visit the Learner Help Center.