pdf bib非負矩陣分解法於語音調變頻譜強化之研究(A study of enhancing the modulation spectrum of speech signals via nonnegative matrix factorization)[In Chinese]Xu-Xiang Wang | Zhi-Hao Zheng | Yu Tsao | Jhih-Wei HongProceedings of the 28th Conference on Computational Linguistics and Speech Processing (ROCLING 2016)