Analytical Approximations of Fractional Delays
| Autor: | Tassart, Stéphan |
|---|---|
| Přispěvatelé: | Analyse et synthèse sonores [Paris], Sciences et Technologies de la Musique et du Son (STMS), Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: |
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]
sound synthesis Thiran Allpass Filters [SCCO.NEUR]Cognitive science/Neuroscience ideal fractional delay analyse et synthèse sonores LIF (Lagrange Interpolator Filters) [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing physical models (computer simulations) |
| Zdroj: | ICASSP International Conference on Acoustics Speech and Signal Processing ICASSP International Conference on Acoustics Speech and Signal Processing, Apr 1997, Munich, Germany |
| Popis: | cote interne IRCAM: Tassart97b; /; National audience; We propose in this paper a new point of view which unifies two well known filter families for approximating ideal fractional delay filters: Lagrange Interpolator Filters (LIF) and Thiran Allpass Filters. We achieve this unification by approximating the ideal Fourier transform of the fractional delay according to two different Padé approximations: series expansions and continued fraction expansions, and by proving that both approximations correspond exactly either to the LIF family or to the allpass delay filters family. This leads to an efficient modular implementation of LIFs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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