Logo ČVUT
CZECH TECHNICAL UNIVERSITY IN PRAGUE
STUDY PLANS
2018/2019

Synthesis of Audio Signals

Login to KOS for course enrollment Display time-table
Code Completion Credits Range Language
B2M31SYN Z,ZK 6 2P+2C Czech
Corequisite:
Safety in Electrical Engineering for a master´s degree (BEZM)
Lecturer:
Roman Čmejla (guarantor)
Tutor:
Roman Čmejla (guarantor)
Supervisor:
Department of Circuit Theory
Synopsis:

This course introduces the fundamentals of sound synthesis algorithms (everyday, music and speech), digital audio effects and sonification. Audio synthetic signals are used in modern digital systems, virtual reality systems, computer animations, games and film. Understanding of theoretical concepts will be consolidated through practical programming assignments in Matlab.

Requirements:

The condition for granting credit is elaboration of selected task in MATLAB.

Syllabus of lectures:

1. Introduction to digital audio signal synthesis; musical scale generator

2. Wavetable synthesis; time expansion and compression, time envelopes

3. Concatenative and granular synthesis; parameters, synchronous and asynchronous

4. Additive synthesis and spectral modelling; periodical nonharmonic signals

5. Phase vocoder; signal modification in frequency domain

6. Subtractive synthesis; excitation sources, simple filters, equalizers, color noise

7. Formant synthesis; Klatt synthesizer, cascade and parallel configuration, FOF

8. Linear prediction; cross synthesis speech and music, non-speech sound modelling

9. Modulation synthesis; AM, tremolo, FM, vibrato, alarm, everyday sounds and tools

10. Nonlinear and waveshaping synthesis; Chebyshev polynomials, limiters, distortion

11. Delay effects; echo, reverb, comb and all-pass filters

12. Spatial effects; Doppler effect, panning, hall, Schroeder?s reverb

13. Introduction to physical modelling; digital waveguides, Karplus-Strong algorithm

14. Sonification of biological signals (ECG, EMG, EEG, FCG, EOG), applications

Syllabus of tutorials:

1. Musical scale, Morse code; aliasing, quantization and compression simulation

2. Time and frequency scale modification, clarinet and banjo wavetable synthesis

3. Concatenative speech synthesis, „sci-fi“ sound synthesis

4. Birdcall, brass, bells, gongs, cymbals, banjo, cllarinet and phone synthesis

5. Length changes of audio signals, pitch shift, noise enhancement

6. Synthesis of percussion, plane, wind, waves, violin, steps , consonant „s“

7. Formant synthesis of vowels, music instrument and animal voice

8. Speech, guitar, piano and hammer resynthesis; „cross“ synthesis music and speech

9. Vibrato, tremolo, coins, bubles, alarms, klepání, dřevo, klarinet, žestě, zvony

10. Application of waveshaping to plucked string instruments, percussion and speech

11. Digital reverb implementation (cellar, shover, cathedral)

12. Spatial effects in sérech and music

13. Guitar, harp, piano and drums synthesis

14. Sonification of EEG, ECG, FCG, EMG

Study Objective:

The aim of the study is to gain theoretical knowledge and practical experience with digital audio synthesis.

Study materials:

Miranda, E.R.: Computer Sound Design, ISBN 0-240-51693-1, Focal Press, Oxford, 2002

Zölzer, U.: DAFX - Digital Audio Effects, ISBN: 0-471-49078-4, John Wiley & Sons, 2002

Note:
Further information:
http://sami.fel.cvut.cz/syn/ http://sami.fel.cvut.cz/sms_eng/
Time-table for winter semester 2018/2019:
06:00–08:0008:00–10:0010:00–12:0012:00–14:0014:00–16:0016:00–18:0018:00–20:0020:00–22:0022:00–24:00
Mon
Tue
Fri
roomT2:A4-202a
Čmejla R.
09:15–10:45
(lecture parallel1)
Dejvice
Ucebna
roomT2:A4-405
Čmejla R.
11:00–12:30
(lecture parallel1
parallel nr.101)

Dejvice
Laborator
roomT2:A4-405

12:45–14:15
(lecture parallel1
parallel nr.102)

Dejvice
Laborator
Thu
Fri
Time-table for summer semester 2018/2019:
Time-table is not available yet
The course is a part of the following study plans:
Data valid to 2019-06-27
For updated information see http://bilakniha.cvut.cz/en/predmet4635806.html