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This paper presents a method for suppressing wind noise in a single channel recording of speech outdoors. This proposed method is based on the convolutive extension of Sparse Non-negative Matrix Factorization, in which a convolutive model is used to attenuate the acoustic effect of wind noise based on wind noise codebook estimated from a recording of pure wind noises. The extended method is convolutive in time domain, thus the potential interframe information of the speech can be exploited to get a more effective result. In the paper, we first exploit the characteristics of wind noise, then focus on the extension method of SNMF and demonstrate its effectiveness on wind noise reduction.
Date of Conference: 24-28 Oct. 2010