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A transient-aware frequency domain audio processor

Authors:

Konstantinos Karamitas,

Alexandros Tsilfidis,

John MourjopoulosAuthors Info & Claims

AM '12: Proceedings of the 7th Audio Mostly Conference: A Conference on Interaction with Sound

Pages 90 - 93

https://doi.org/10.1145/2371456.2371470

Published: 26 September 2012 Publication History

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Abstract

In this paper, the implementation of a transient-aware, discrete-time audio processor is presented. The processing takes place in the Short Time Fourier Transform (STFT) domain, using a variant of the well known overlap-add technique. The proposed method identifies the presence of transients in the input signal and constantly adapts the analysis-synthesis frame size. Hence, the proposed technique ensures optimal time or frequency resolution, depending on the intrinsic characteristics of each processing frame.

References

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Bosi, M. and Goldberg, R. E. Introduction to Digital Audio Coding and Standards, Kluwer Academic Publishers, Boston-Dordrecht-London, 2003

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Dressler, K. Sinusoidal extraction using an efficient implementation of a multi-resolution FFT, Proc. of the 9th Int. Conference on Digital Audio Effects (DAFx-06), Montreal, Canada, September 18--20, 2006

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Litovsky, R. Y., Coldburn, H. S., Yost, W. A. and Guzman, S. J. The precedence effect, Journal of the Acoustical Society of America 106,4 (1999), 1633--1654.

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Oppenheim, A. V., Schafer, R. W. and Buck, J. R. Discrete Time Signal Processing. Prentice Hall, USA, 1999

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Orfanidis, S. J. Introduction to Signal Processing. Prentice Hall, USA, 1995.

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Tsilfidis, A. Signal Processing Methods for Enhancing Speech and Music Signals in Reverberant Environments (Ph.D. thesis), University of Patras, Patras, Greece, 2011.

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Tsilfidis and J. Mourjopoulos, Signal-dependent constraints for perceptually motivated suppression of late reverberation, Signal Processing, Volume 90, pp. 959--965, 2010.

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Index Terms

A transient-aware frequency domain audio processor
1. Applied computing
  1. Arts and humanities
    1. Sound and music computing
2. Information systems
  1. Information retrieval
    1. Specialized information retrieval
      1. Multimedia and multimodal retrieval
        Music retrieval

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Published In

AM '12: Proceedings of the 7th Audio Mostly Conference: A Conference on Interaction with Sound

September 2012

174 pages

ISBN:9781450315692

DOI:10.1145/2371456

Conference Chairs:
Andreas Floros
Ionian University, Greece
,
Andreas Mniestris
Ionian University, Greece
,
Program Chairs:
Iani Zannos
Ionian University, Greece
,
Theodoros Lotis
Ionian University, Greece

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Association for Computing Machinery

New York, NY, United States

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Published: 26 September 2012

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AM '12

AM '12: A conference on interaction with sound

September 26 - 28, 2012

Corfu, Greece

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Overall Acceptance Rate 177 of 275 submissions, 64%

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Fourier transform representation by frequency-time wavelets

Time-frequency signal analysis based on the windowed fractional Fourier transform

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