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- W2015987054 abstract "This paper presents a two-stage soft thresholding algorithm based on discrete cosine transform (DCT) and empirical mode decomposition (EMD). In the first stage, noisy speech is decomposed into eight frequency bands and a specific noise variance is calculated for each one. Based on this variance, each band is denoised using soft thresholding in DCT domain. The remaining noise is eliminated in the second stage through a time domain soft thresholding strategy adapted to the intrinsic mode functions (IMFs) derived by applying EMD on the signal obtained from the first stage processing. Significantly better SNR improvement and perceptual speech quality results for different noise types prove the superiority of the proposed algorithm over recently reported techniques." @default.
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- W2015987054 date "2014-05-20" @default.
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- W2015987054 title "Subband DCT and EMD Based Hybrid Soft Thresholding for Speech Enhancement" @default.
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- W2015987054 doi "https://doi.org/10.1155/2014/765454" @default.
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