SGN9206 Signal processing graduate seminar II
Fall 2006: Digital audio effects
Course information
SGN9206 Signal Processing Graduate Seminar II: Digital audio effects
Lectured in Fall 2006, Periods I  II
5 credits
The course is suitable for postgraduate studies
Instructors: Prof. Anssi Klapuri and Prof. Moncef Gabbouj
Literature: DAFX  Digital Audio Effects, Udo Zölzer (Ed.), John Wiley&Sons, 2002, 530 pages.
Lecture time and place
Per I,II: Thursday 14  16, TB223
Already scheduled presentations:

7.9.06 Introduction (Anssi Klapuri)

14.9.06 Modulators and demodulators (Pasi Pertilä)

21.9.06 Nonlinear processing (Teemu Karjalainen)

28.9.06 Control of digital audio effects (Petri Hirvonen)

5.10.06  no presentation 

12.10.06  exam week, no seminar 

19.10.06 Timefrequency processing (Matti Ryynänen, Toni Heittola)

26.10.06 Spatial effects (Sakari Tervo, Teemu Korhonen)

2.11.06 Spectral processing (Elina Helander and N.N.)

9.11.06 Time and frequency warping music signals (Jouni Paulus)

16.11.06  no presentation 

23.11.06 Sourcefilter processing (Jari Niemi)
Timesegment Processing (Victor Popa)
Exam
The exam will be on Thursday 30.11.2006 at 912 o'clock.
Register for the exam in oinfo by 22.11.
Presentation slides, exercises, and test samples
Are here.
(Forgot your password? Email to klap @ cs tut fi.)
The textbook can be borrowed from Anssi, room TF311.
Seminar contents and practical implementation
The aim of this seminar is to study the main fields of digital audio effects, based on the abovementioned book.
There are many audio signal processing methods that are widely used in audio production and commercial products. Such methods include, for example, audiospecific filters (timevarying filters, comb filters, etc.), sound spatialisation and reverberation, time stretching and pitch shifting, phase vocoder effects, sinusoidal modeling, nonlinear effects etc.
The first lecture is given by the instructor.
The rest of the seminar consists of student presentations.
Topics are assigned on the first lecture. In practice:

Each individual student prepares a 45minute presentation (incl. discussion) on one of the chapters of the book. The longest chapters are split in two parts to make this possible. In each presentation, the basic DSP background is explained before going into the details of its audio application.

Each students act as an opponent to one other student, giving feedback and asking questions before his/her presentation (based on draft slides prepared by the presenter) and during the presentation.

The book contains MATLAB examples which are used as a basis to prepare miniexercises about each chapter. Each presenter is responsible for preparing such an exercise and these are reviewed by the instructor before assigning them to the students. The attending students have to return the exercises to the instructor within 1 week after each presentation.
Literature
Book "DAFX  Digital Audio Effects," Udo Zölzer (Editor), John Wiley & Sons, 2002, 530 pages.
Table of contents
1. Introduction (U. Zölzer), 30 pages
2. Filters (P. Dutilleux, U. Zölzer), 32 pages
3. Delays (P. Dutilleux, U. Zölzer), 12 pages
4. Modulators and Demodulators (P. Dutilleux, U. Zölzer), 18 pages
5. Nonlinear Processing (P. Dutilleux, U. Zölzer), 44 pages
6. Spatial Effects (D. Rocchesso), 64 pages
7. Timesegment Processing (P. Dutilleux, G. De Poli, U. Zölzer), 36 pages
8. Timefrequency Processing (D. Arfib, F. Keiler, U. Zölzer). 62 pages
9. SourceFilter Processing (D. Arfib, F. Keiler, U. Zölzer), 74 pages
10. Spectral Processing (X. Amatriain, J. Bonada, A. Loscos, X. Serra), 66 pages
11. Time and Frequency Warping Musical Signals (G. Evangelista), 26 pages
12. Control of Digital Audio Effects (T. Todoroff), 34 pages
13. Bitstream Signal Processing (M. Sandler, U. Zölzer), 16 pages
Requirements for passing the course

One oral presentation

Preparing draft slides to opponents and final slides to participants

Preparing an exercise (reviewed by instructor and assigned to the students)

70% or more attendance of lectures

70% or more completion of the exercises

Final exam based on presentation materials

Final mark assesment: 50% based on the presentation (and its material), 50% based on exam
Links
Last modified: Fri Dec 3 11:00:20 EET 2004
 Anssi Klapuri, klap @ cs tut fi