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Communication Dans Un Congrès Année : 2004

Enhanced Time-Stretching Using Order-2 Sinusoidal Modeling

Résumé

In this article, we introduce a 2-level sinusoidal model and demonstrate its aptitude for a challenging digital audio effect: time-stretching without audible artifacts. More precisely, sinusoidal modeling is used at the two levels of the new sound model. We consider the frequency and amplitude parameters of the partials of the classic sinusoidal model as (control) signals, that we propose to model again using a sinusoidal model. This way, higher-level musical structures such as the vibrato and tremolo in the original sound are captured in the ``partials of partials'' of this order-2 sinusoidal model. We propose then a new time-stretching method, based on this new hierarchical model, which preserves not only the pitch of the original sound, but also its natural vibrato and tremolo.

Domaines

Autre [cs.OH]
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Dates et versions

hal-00308045 , version 1 (23-01-2009)

Identifiants

  • HAL Id : hal-00308045 , version 1

Citer

Sylvain Marchand, Martin Raspaud. Enhanced Time-Stretching Using Order-2 Sinusoidal Modeling. Digital Audio Effects (DAFx04) Conference, Oct 2004, Italy. pp.76--82. ⟨hal-00308045⟩

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