Title: A Speech Reconstruction Algorithm Using Adaptive Compressive Sampling Matching Pursuit
Abstract:This article analyzes greedy algorithm's reconstruction and anti-noise performances in noise situation based on speech compression coding and reconstruction framework via wavelet decomposition.We prop...This article analyzes greedy algorithm's reconstruction and anti-noise performances in noise situation based on speech compression coding and reconstruction framework via wavelet decomposition.We propose an improved adaptive compressive sampling matching pursuit algorithm(ACoSaMP).The algorithm can approximate the sparsity in different phases by setting the variable step size in sparsity unknown circumstances.Meanwhile,in every iteration,the residual signal is estimated using the least squares method,instead of the traditional CoSaMP algorithm.Finally,the wavelet de-noising method is employed to synthesize speech.Experimental results show the subjective and objective performances of the algorithm outperform existing similar algorithms in different compression ratios and our algorithm has strong robutness to noise.Read More
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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