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유희조(You, Heejo),양형원(Yang, Hyungwon),강재구(Kang, Jaekoo),조영선(Cho, Youngsun),황성하(Hwang, Sung Hah),홍연정(Hong, Yeonjung),조예진(Cho, Yejin),김서현(Kim, Seohyun),남호성(Nam, Hosung) 한국음성학회 2016 말소리와 음성과학 Vol.8 No.3
Speech inversion (acoustic-to-articulatory mapping) is not a trivial problem, despite the importance, due to the highly non-linear and non-unique nature. This study aimed to investigate the performance of Deep Neural Network (DNN)compared to that of traditional Artificial Neural Network (ANN) to address the problem. The Wisconsin X-ray Microbeam Database was employed and the acoustic signal and articulatory pellet information were the input and output in the models. Results showed that the performance of ANN deteriorated as the number of hidden layers increased. In contrast, DNN showed lower and more stable RMS even up to 10 deep hidden layers, suggesting that DNN is capable of learning acoustic-articulatory inversion mapping more efficiently than ANN.