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Título:	Improving Pitch Tracking Performance in Hard Noise Conditions by a Preprocessing Based on Mathematical Morphology
Autor/a:	Martí i Puig, Pere; Solé-Casals, Jordi; Reig Bolaño, Ramon
Otros autores:	Universitat de Vic. Escola Politècnica Superior; Universitat de Vic. Grup de Recerca en Tecnologies Digitals; International Conference on Non-Linear Speech Processing NOLISP (2009 : Vic); NOLISP 2009
Notas:	In this paper we show how a nonlinear preprocessing of speech signal -with high noise- based on morphological filters improves the performance of robust algorithms for pitch tracking (RAPT). This result happens for a very simple morphological filter. More sophisticated ones could even improve such results. Mathematical morphology is widely used in image processing and has a great amount of applications. Almost all its formulations derived in the two-dimensional framework are easily reformulated to be adapted to one-dimensional context
Materia(s):	-Tractament del senyal
Derechos:	(c) Universitat de Vic Tots els drets reservats
Tipo de documento:	Capítulo o parte de libro
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