This paper describes a new adaptive algorithm and assesses its effectiveness within speech enhancement applications. The proposed variable step size block exact APA (VSS-BEAPA) filtering is based on the affine projection algorithm (APA) and introduces a block processing with a variable step size that allows to consider under-modeling scenarios. The algorithm shows improved convergence performance and computational efficiency and its robustness is proved in a typical context of a hands-free teleconferencing application in a noisy environment. The experiments show that a microphone array system joined with VSS-BEAPA filtering is capable of both decreasing the noise level and enhancing the speech signal quality.
A Novel Affine Projection Algorithm for Superdirective Microphone Array Beamforming / Comminiello, Danilo; Scarpiniti, Michele; Parisi, Raffaele; Uncini, Aurelio. - (2010), pp. 2127-2130. (Intervento presentato al convegno International Symposium on Circuits and Systems Nano-Bio Circuit Fabrics and Systems (ISCAS 2010) tenutosi a Paris, FRANCE nel MAY 30-JUN 02, 2010) [10.1109/iscas.2010.5536944].
A Novel Affine Projection Algorithm for Superdirective Microphone Array Beamforming
COMMINIELLO, DANILO;SCARPINITI, MICHELE;PARISI, Raffaele;UNCINI, Aurelio
2010
Abstract
This paper describes a new adaptive algorithm and assesses its effectiveness within speech enhancement applications. The proposed variable step size block exact APA (VSS-BEAPA) filtering is based on the affine projection algorithm (APA) and introduces a block processing with a variable step size that allows to consider under-modeling scenarios. The algorithm shows improved convergence performance and computational efficiency and its robustness is proved in a typical context of a hands-free teleconferencing application in a noisy environment. The experiments show that a microphone array system joined with VSS-BEAPA filtering is capable of both decreasing the noise level and enhancing the speech signal quality.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
