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View Code? Open in Web Editor NEWApplying discrete wavelet packet transform (DWPT) and nonnegative matrix factorization (NMF) analysis to speech enhancement tasks. Conventional speech enhancement system structure was performed to DWPT-NMF. Please referenced to "S. S. Wang et al., "Wavelet Speech Enhancement Based on Nonnegative Matrix Factorization," in IEEE Signal Processing Letters, vol. 23, no. 8, pp. 1101-1105, Aug. 2016."