Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):
V. Despotovic, N. Görtz, Z. Peric:
"Improved non-linear long-term predictors based on Volterra filters";
Vortrag: ELMAR 2012,
Zadar, Croatia;
12.09.2012
- 14.09.2012; in: "Proceedings ELMAR 2012",
IEEE Xplore,
(2012),
ISBN: 978-1-4673-1243-1;
S. 231
- 234.
Kurzfassung deutsch:
Speech prediction is extensively based on linear models. However, components generated by nonlinear effects are also contained in speech signals, which is neglected using linear techniques. This paper presents long-term nonlinear predictor based on second-order Volterra filters that is shown to be superior to linear long-term predictor with only a minimal increase in complexity and the number of coefficients. It can be used connected in cascade with short-term linear predictor. The frame/subframe structure is proposed, where each frame is divided into four subframes. Second order Volterra long-term prediction is applied to each subframe separately.
Kurzfassung englisch:
Speech prediction is extensively based on linear models. However, components generated by nonlinear effects are also contained in speech signals, which is neglected using linear techniques. This paper presents long-term nonlinear predictor based on second-order Volterra filters that is shown to be superior to linear long-term predictor with only a minimal increase in complexity and the number of coefficients. It can be used connected in cascade with short-term linear predictor. The frame/subframe structure is proposed, where each frame is divided into four subframes. Second order Volterra long-term prediction is applied to each subframe separately.
Schlagworte:
Nonlinear signal processing , Pitch , Speech prediction , Volterra filters
Elektronische Version der Publikation:
http://publik.tuwien.ac.at/files/PubDat_211710.pdf