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This paper examines the use of a new filtered minima-controlled recursive averaging (FMCRA) noise estimation technique as a robust front-end processing to improve the performance of a distributed speech recognition (DSR) system in noisy environments. The noisy speech is enhanced by using a two-stage framework in order to simultaneously address the inefficiency of the voice activity detector (VAD)...
Suppression of speech components after perceptual speech enhancement (SE) lowers the noise masking threshold (NMT) level of the enhanced signal. This may re-introduce noise components that are initially masked but not processed by the denoising filter, thereby, favoring the emergence of musical noise. This paper presents a modified perceptual speech enhancement algorithm based on a perceptually motivated...
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