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An analysis/synthesis tool for transient signals that allows a flexible sines+transients+noise model for audio

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2 Author(s)
Verma, T.S. ; Dept. of Electr. Eng., Stanford Univ., CA, USA ; Meng, Teresa H.‐Y.

We present a flexible analysis/synthesis tool for transient signals that extends current sinusoidal and sines+noise models for audio to sines+transients+noise. The explicit handling of transients provides a more realistic and robust signal model. Because the transient model presented is the frequency domain dual to sinusoidal modeling, it has similar flexibility and allows for a wide range of transformations on the parameterized signal. In addition, due to this duality, a major portion of the transient model is sinusoidal modeling performed in the frequency domain. In order to make the transient and sinusoidal models work more effectively together, we present a formulation of sinusoidal modeling (and therefore transient modeling) in terms of matching pursuits and overlap-add synthesis. This formulation provides a tight coupling between the sines+transients+noise model because it allows a simple heuristic, based on tonality, as to when an audio signal should be modeled as sines and/or transients and/or noise

Published in:

Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on  (Volume:6 )

Date of Conference:

12-15 May 1998