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Transform and subband coding of audio signals

TNT members involved in this project:
Dipl.-Ing. Thomas Krause
Prof. Dr.-Ing. Jörn Ostermann
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Most of the current audio codecs decompose the input signal into spectral components. These spectral components can then be coded more efficiently than the full bandwidth input signal. The quantization is controlled by a psychoacoustic model so that the audibility of the resulting distortions is kept minimal. Subsequent entropy coding aims at a minimization of the resulting bit rate.

The individual components are to be optimized in order to increase the coding efficiency of the overall system.

Focus is given on the following topics:

  • Optimization of filter banks and transforms
  • Psychoacoustic models
  • Quantization and coding

Show recent publications only
  • Journals
    • Nicolle van Schijndel, Julien Bensa, Mads Christensen, Catherine Colomes, Bernd Edler, Richard Heusdens, Jesper Jensen, Jensen Søren, Bastiaan Kleijn, Valery Kot, Balazs Kovesi, Jonas Lindblom, Dominique Massaloux, Omar Niamut, Frederik Norden, Jan Plasberg, Renat Vafin, Steven van de Par, David Virette, Oliver Wübbolt
      Adaptive RD Optimized Hybrid Sound Coding
      J. Audio Eng. Soc., Audio Engineering Society, Vol. 56, No. 10, pp. 787-809, October 2008
    • Bernd Edler
      Audiocodierung in MPEG-4
      Telekommunikation Aktuell, Verlag für Wissenschaft und Leben, Erlangen, July 2004
    • Gerald Schuller, Bin Yu, Dawei Huang, Bernd Edler
      Perceptual Audio Coding Using Adaptive Pre- and Post-filters and Lossless Compression
      IEEE Transactions on Speech and Audio Processing, IEEE, Vol. 10, No. 6, pp. 379-390, September 2002
    • Laura Contin, Bernd Edler, David Meares, Pete Schreiner
      Tests on MPEG-4 Audio Codec Proposals
      Signal Processing: Image Communication, Vol. 9, No. 4, pp. 327-342, May 1997
    • Miodrag Temerinac, Bernd Edler
      Overlapping Block Transform: Window Design, Fast Algorithm and an Image Coding Experiment
      IEEE Trans. on Communications, IEEE, Vol. 43, No. 9, September 1995
    • Miodrag Temerinac, Bernd Edler
      LINC: A Common Theory of Transform and Subband Coding
      IEEE Trans. on Communications, IEEE, Vol. 41, No. 2, pp. 266-274, February 1993
    • Bernd Edler
      Aliasing Reduction in Subbands of Cascaded Filter Banks with Decimation
      Electronics Letters, IEE, Vol. 28, No. 12, pp. 1104-1105, June 1992
    • Miodrag Temerinac, Bernd Edler
      A Unified Approach to Lapped Orthogonal Transforms
      IEEE Trans. on Image Processing, IEEE, Vol. 1, No. 1, pp. 111-116, January 1992
    • Bernd Edler
      Codierung von Audiosignalen mit überlappender Transformation und adaptiven Fensterfunktionen
      Frequenz, Schiele und Schön, Vol. 43, No. 9, pp. 252-256, September 1989
  • Conference Contributions
    • Stephan Preihs, Christoph Wacker, Jörn Ostermann
      Adaptive Pre- and Post-Filtering for a Subband ADPCM-based Low Delay Audio Codec
      2015 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA), New Paltz, October 2015
    • Stephan Preihs, Jörn Ostermann
      Using Cascaded Global Optimization for Filter Bank Design in Low Delay Audio Coding
      139th AES Convention [peer-reviewed], New York, October 2015
    • Stephan Preihs, Jörn Ostermann
      Globally Optimized Dynamic Bit-Allocation Strategy for Subband ADPCM-Based Low Delay Audio Coding
      40th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brisbane, Australia, April 2015
    • Stephan Preihs, Jörn Ostermann
      Error Robust Low Delay Audio Coding based on Subband ADPCM
      131st AES Convention, New York, October 2011
    • Oliver Niemeyer, Bernd Edler
      Detection and Extraction of Transients for Audio Coding
      120th AES Convention, Audio Engineering Society, p. Preprint 6811, Paris, May 2006
    • Nikolaus Meine, Bernd Edler
      Improved Quantization and Lossless Coding for Subband Audio Coding
      118th AES Convention, Audio Engineering Society, p. Preprint 6468, Barcelona, May 2005
    • Oliver Niemeyer, Bernd Edler
      Efficient Coding of Excitation Patterns Combined with a Transform Audio Coder
      118th AES Convention, Audio Engineering Society, p. Preprint 6466, Barcelona, May 2005
    • Gerald Schuller, Bernd Edler, Adele Doser
      A Method for Alias Reduction in Cascaded Filter Banks
      9th IEEE DSP Workshop, IEEE, Hunt, TX, October 2000
    • Frank Baumgarte, Bernd Edler
      Ein Psychophysiologisches Gehörmodell zur Nachbildung von Wahrnehmungsschwellen für die Audiocodierung
      DFG-Abschlußkolloquium, München, October 2000
    • Bernd Edler, Christof Faller, Gerald Schuller
      Perceptual Audio Coding Using a Time-Varying Linear Pre- and Post-Filter
      109th AES Convention, Audio Engineering Society, p. Preprint 5274, Los Angeles, September 2000
    • Bernd Edler, Gerald Schuller
      Audio Coding Using a Psychoacoustic Pre- and Post-Filter
      Int. Conf. on Acoustics, Speech, and Signal Processing, Istanbul, June 2000
    • Bernd Edler
      Very Low Bit Rate Audio Coding Developement
      14th International AES Conference "internet.aes.org", Seattle, June 1997
    • Bernd Edler
      Overview on the Current Development of MPEG-4 Audio Coding
      4th International Workshop on Systems, Signals and Image Processing, Poznan, May 1997
    • Bernd Edler
      Current Status of the MPEG-4 Audio Verification Model Development
      101th AES Convention, Audio Engineering Society, p. Preprint 4376, Los Angeles, November 1996
    • Thomas Sporer, Karlheinz Brandenburg, Bernd Edler
      The Use of Multirate Filter Banks for High Quality Digital Audio
      EUSIPCO '92, Bruxelles, September 1992
    • Karlheinz Brandenburg, Ernst Eberlein, Jürgen Herre, Bernd Edler
      Comparison of Filter Banks for High Quality Audio Coding
      IEEE Int. Symp. on Circuits and Systems, San Diego, May 1992
    • Bernd Edler
      Codierung von Audiosignalen mit überlappender Transformation und adaptiven Fensterfunktionen
      Kleinheubacher Tagung, Kleinheubach, October 1989
    • Bernd Edler
      Prädiktive Teilbandcodierung mit Vektorquantisierung für hochqualitative Audiosignale
      8. ITG-Fachtagung Hörrundfunk, Mainz, November 1988