Improved DNN-HMM English Acoustic Model Specially For Phonotactic Language Recognition. - Wei-Wei Liu 001; Guo-Chun Li; Cun-Xue Zhang; Hai-Feng Yan; Jing He; Ying-Xin Gan; Yan-Miao Song; Jianhua Zhou; Jian-Zhong Liu; Ying Yin; Ya-Nan Li; Yu-Bin Huang; et al. (IALP, 2019)