Speech enhancement based on sparse representation under color noisy environment
| Autor: | Ching-Tang Hsieh, Yan-heng Chen, Piao-Yu Huang, Ting-Wen Chen |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
K-SVD
Computer science business.industry Signal reconstruction Noise reduction Speech recognition Computer Science::Computation and Language (Computational Linguistics and Natural Language and Speech Processing) Pattern recognition Sparse approximation Matching pursuit Speech enhancement Colors of noise Artificial intelligence business PESQ |
| Zdroj: | ISPACS |
| DOI: | 10.1109/ispacs.2015.7432752 |
| Popis: | Recently, sparse algorithm for signal enhancement is more and more popular issues. In this paper, we apply it to enhance speech signal. The process of sparse theory is classified into two parts, one is for dictionary training part and the other is signal reconstruction part. We focus environment on both white Gaussian noise and color noise filtering based on sparse. The orthogonal matching pursuit (OMP) algorithm is used to optimize the sparse coefficients X of clean speech dictionary, where clean speech dictionary is trained by K-SVD algorithm. Then, we multiply these two matrixes D' and X' to reconstruct the clean speech signal. Denoising performance of the experiments shows that our proposed method is superior to other state of art methods in four kinds of objective quality measures as SNR, LLR, SNRseg and PESQ. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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