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Lecture Notes in Computer Science
In this paper an adaptive fuzzy filter, based on fuzzy system, is proposed for speech signal enhancement and automatic speech recognition accuracy. In the past two decades the basic wavelet thresholding-algorithm has been widely studied and is common applied to filter noise. In the proposed system adaptive wavelet thresholds are generated and controlled by fuzzy rules concerning the presence of speech in noise. First an amplified voice activity detector is designed to improve performance on SNRdoi:10.1007/978-3-642-12179-1_42 fatcat:s3sqmtr22fganc725eeuu35pvq