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- W46241468 abstract "In this paper, the acoustic characteristics of sound fields in enclosed rooms are studied in the joint presence of speech and noise, in order to design a broadband microphone array system capable of coping with both coherent and diffuse noises. Several state-of-the-art speech enhancement array structures are presented and compared to our new system in terms of correct word recognition rates in a simple command and control task. The proposed structure, based on a broadband subband-nested array, performs real-time estimations of the spatial coherence in order to determine the coherent/diffuse nature of the different subbands, using different filters in each case, improving also the classical Wiener post-filter, typically used for diffuse noise supression, for proper cancellation of coherent noises. The results obtained with a 15-channel simultaneous recording database in different reverberation and noise conditions show better performance than other structures previously proposed." @default.
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- W46241468 date "1998-11-30" @default.
- W46241468 modified "2023-10-16" @default.
- W46241468 title "Coherence-based subband decomposition for robust speech and speaker recognition in noisy and reverberant rooms" @default.
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- W46241468 doi "https://doi.org/10.21437/icslp.1998-303" @default.
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