Title :
A practical beamformer-postfilter system for adaptive speech enhancement in non-stationary noise environments
Author :
Wolff, Tobias ; Buck, Markus
Author_Institution :
Nuance Commun. Aachen GmbH, Ulm, Germany
fDate :
May 30 2011-June 1 2011
Abstract :
In this contribution we present an adaptive beamformer-postfilter system which can be used to suppress non-stationary noises. The emphasis lies on the spatial filtering property of the proposed postfilter. Due to the spatial characteristic of the postfilter, an interfering speaker in background noise can be suppressed effectively while maintaining the quality of the desired speech using only two microphones.
Keywords :
adaptive signal processing; array signal processing; filtering theory; speech enhancement; adaptive speech enhancement; beamformer-post filter system; microphones; nonstationary noise environments; spatial filtering property; Adaptive systems; Coherence; Microphones; Noise; Noise measurement; Speech; Speech enhancement; Beamforming; Multi-Channel Speech Enhancement; Non-Stationary Noise; Spatial Postfilter;
Conference_Titel :
Hands-free Speech Communication and Microphone Arrays (HSCMA), 2011 Joint Workshop on
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4577-0997-5
DOI :
10.1109/HSCMA.2011.5942387
