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Speech enhancement is very important in the application of speech recognition and communication. To implement it, a FFT-based dual-ALU processor by using hardware-software codesign is proposed in this paper. For the consideration of computation load, the speech enhancement adopts spectral subtraction method to reduce the influence of noise. In this case, FFT occupies most of the computation load....
This paper proposed a new single-channel speech enhancement in variable noise-level environment. This new method possesses the advantages of the spectral entropy analysis and temporal spectrum energy variation information. Hence the background noise level estimated by the proposed method is more precise than that estimated by the pure spectrum energy method [4]. Experimental results show that the...
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