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Single-Channel Transient Interference Suppression With Diffusion Maps

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3 Author(s)
Talmon, R. ; Dept. of Math., Yale Univ., New Haven, CT, USA ; Cohen, I. ; Gannot, S.

A transient is an abrupt or impulsive sound followed by decaying oscillations, e.g., keyboard typing and door knocking. Such sounds often arise as interference in everyday applications, e.g., hearing aids, hands-free accessories, mobile phones, and conference-room devices. In this paper, we present an algorithm for single-channel transient interference suppression. The main component of the proposed algorithm is the estimation of the spectral variance of the interference. We propose a statistical model of the transient interference and combine it with non-local filtering. We exploit the unique spectral structure of the transients along with their impulsive temporal nature to distinct them from speech. A particular attention is given to handling both short- and long-duration transients. Experimental results show that the proposed algorithm enables significant transient suppression for a variety of transient types.

Published in:

Audio, Speech, and Language Processing, IEEE Transactions on  (Volume:21 ,  Issue: 1 )