DAFX: Digital Audio Effects

DAFX: Digital Audio Effects

by Udo Zölzer, Udo lzer

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The rapid development in various fields of Digital Audio Effects, or DAFX, has led to new algorithms and this second edition of the popular book, DAFX: Digital Audio Effects has been updated throughout to reflect progress in the field. It maintains a unique approach to DAFX with a lecture-style introduction into the basics of effect processing. Each effect description begins with the presentation of the physical and acoustical phenomena, an explanation of the signal processing techniques to achieve the effect, followed by a discussion of musical applications and the control of effect parameters. Topics covered include: filters and delays, modulators and demodulators, nonlinear processing, spatial effects, time-segment processing, time-frequency processing, source-filter processing, spectral processing, time and frequency warping musical signals.

Updates to the second edition include:

  • Three completely new chapters devoted to the major research areas of: Virtual Analog Effects, Automatic Mixing and Sound Source Separation, authored by leading researchers in the field .
  • Improved presentation of the basic concepts and explanation of the related technology.
  • Extended coverage of the MATLABTM scripts which demonstrate the implementation of the basic concepts into software programs. 
  • Companion website (www.dafx.de) which serves as the download source for MATLABTM scripts, will be updated to reflect the new material in the book.

Discussing DAFX from both an introductory and advanced level, the book systematically introduces the reader to digital signal processing concepts, how they can be applied to sound and their use in musical effects. This makes the book suitable for a range of professionals including those working in audio engineering, as well as researchers and engineers involved in the area of digital signal processing along with students on multimedia related courses.

Product Details

ISBN-13: 9780470979679
Publisher: Wiley
Publication date: 03/16/2011
Sold by: Barnes & Noble
Format: NOOK Book
Pages: 624
File size: 33 MB
Note: This product may take a few minutes to download.

About the Author

Udo Zölzer, Helmut Schmidt University, Hamburg, Germany
Professor Zölzer is Head of the Department of Signal Processing and Communications at Helmut Schmidt University (University of the Federal Armed Forces, Hamburg, Germany) since 1999. His research interests include audio and video signal processing and communications.

Table of Contents


List of Contributors.

1 Introduction (V. Verfaille, M. Holters, U. Zölzer).

1.1 Digital Audio Effects DAFX with MATLAB.

1.2 Classifications of DAFX.

1.3 Fundamentals of Digital Signal Processing.

1.4 Conclusion.


2 Filters and Delays (P. Dutilleux, M. Holters, S. Disch, U. Zölzer).

2.1 Introduction.

2.2 Basic Filters.

2.3 Equalizers.

2.4 Time-varying Filters.

2.5 Basic Delay Structures.

2.6 Delay-based Audio Effects.

2.7 Conclusion.

Sound and Music.


3 Modulators and Demodulators (P. Dutilleux, M. Holters, S. Disch, U. Zölzer).

3.1 Introduction.

3.2 Modulators.

3.3 Demodulators.

3.4 Applications.

3.5 Conclusion.

Sound and Music.


4 Nonlinear Processing (P. Dutilleux, K. Dempwolf, M. Holters, U. Zölzer).

4.1 Introduction.

4.2 Dynamic Range Control.

4.3 Musical Distortion and Saturation Effects.

4.4 Exciters and Enhancers.

4.5 Conclusion.

Sound and Music.


5 Spatial Effects (V. Pulkki, T. Lokki, D. Rocchesso).

5.1 Introduction.

5.2 Concepts of spatial hearing.

5.3 Basic spatial effects for stereophonic loudspeaker and headphone playback.

5.4 Binaural techniques in spatial audio.

5.5 Spatial audio effects for multichannel loudspeaker layouts.

5.6 Reverberation.

5.7 Modeling of room acoustics.

5.8 Other spatial effects.

5.9 Conclusion.

5.10 Acknowledgements.


6 Time-Segment Processing (P. Dutilleux, G. De Poli, A. von dem Knesebeck, U. Zölzer).

6.1 Introduction.

6.2 Variable Speed Replay.

6.3 Time Stretching.

6.4 Pitch Shifting.

6.5 Time Shuffling and Granulation.

6.6 Conclusion.

Sound and Music.


7 Time-Frequency Processing (D. Arfib, F. Keiler, U. Zölzer, V. Verfaille, J. Bonada).

7.1 Introduction.

7.2 Phase Vocoder Basics.

7.3 Phase Vocoder Implementations.

7.4 Phase Vocoder Effects.

7.5 Conclusion.


8 Source-Filter Processing (D. Arfib, F. Keiler, U. Zölzer, V. Verfaille).

8.1 Introduction.

8.2 Source-Filter Separation.

8.3 Source-Filter Transformations.

8.4 Conclusion.


9 Adaptive Digital Audio Effects (V. Verfaille, D. Arfib, F. Keiler, A. von dem Knesebeck, U. Zölzer).

9.1 Introduction.

9.2 Sound-Feature Extraction.

9.3 Mapping Sound Features to Control Parameters.

9.4 Examples of Adaptive DAFX.

9.5 Conclusions.


10 Spectral Processing (J. Bonada, X. Serra, X. Amatriain, A. Loscos).

10.1 Introduction.

10.2 Spectral Models.

10.3 Techniques.

10.4 Effects.

10.5 Conclusions.


11 Time and Frequency Warping-Musical Signals (G. Evangelista).

11.1 Introduction.

11.2 Warping.

11.3 Musical Uses of Warping.

11.4 Conclusion.


12 Virtual Analog Effects (V. Välimäki, S. Bilbao, J. O. Smith, J. S. Abel, J. Pakarinen, D. Berners).

12.1 Introduction.

12.2 Virtual Analog Filters.

12.3 Circuit-Based Valve Emulation.

12.4 Electromechanical Effects.

12.5 Tape-Based Echo Simulation.

12.6 Antiquing of Audio Files.

12.7 Conclusion.


13 Automatic Mixing (E. Perez-Gonzalez, J. D. Reiss).

13.1 Introduction.

13.2 AM-DAFX.

13.3 Cross-adaptive AM-DAFX.

13.4 AM-DAFX Implementations.

13.5 Conclusion.


14 Sound Source Separation (G. Evangelista, S. Marchand, M. D. Plumbley, E. Vincent).

14.1 Introduction.

14.2 Binaural Source Separation.

14.3 Source Separation from Single-Channel Signals.

14.4 Applications.

14.5 Conclusions.





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