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Robust speech recognition using spectral subtraction and temporal structure normalization

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3 Author(s)

Filtering approaches in spectral domain and features domain have been shown their effectiveness for robust speech recognition. In this paper, we propose a two step filtering method. In the first step, spectral subtraction filter is applied to speech spectrum. In the second step, we design a temporal structure normalization filter in order to apply to features extracted from the filtered spectrum. Our results on Aurora 2 show that the proposed method has higher recognition rate than both of spectral subtraction and temporal filtering methods.

Published in:

2011 19th Iranian Conference on Electrical Engineering

Date of Conference:

17-19 May 2011