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Communication Dans Un Congrès Année : 2002

Transient modeling with a Frequency-Transform Subspace Algorithm and "Transient + Sinusoidal" scheme

Résumé

We present an efficient modeling method for strong transient character audio signals. It is shown that the parametric non-stationary exponentially damped sinusoids (EDS) model permits good performance for time domain modeling of quasi-stationary signals or "weak" transients. However, a decay in modeling performance is observed when dealing with highly nonstationary signals as in a variety of musical sounds (various percussions, castanets, triangle,...). The idea is then to process the signal in a well chosen frequency-transform domain in which the transient temporal characteristics are better modeled by EDS. As a result, better representations of the transient signal class are obtained with no pre-echo artifacts (energy before the attack) and a very good signal onset dynamic reproduction. Finally, an original "transient+sinusoidal" modeling scheme is proposed.
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Dates et versions

hal-01251630 , version 1 (06-01-2016)

Identifiants

  • HAL Id : hal-01251630 , version 1

Citer

Remy Boyer, Slim Essid. Transient modeling with a Frequency-Transform Subspace Algorithm and "Transient + Sinusoidal" scheme. IEEE Conference on Digital Signal Processing (DSP), Jul 2002, Santorini, Greece. ⟨hal-01251630⟩
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