About the Authors

Yan Song

songy@ustc.edu.cn

Affiliation National Engineering Laboratory of Speech and Language Information Processing, University of Science and Technology of China, Hefei, China

Ian Vince McLoughlin

Affiliation National Engineering Laboratory of Speech and Language Information Processing, University of Science and Technology of China, Hefei, China

Li-Rong Dai

Affiliation National Engineering Laboratory of Speech and Language Information Processing, University of Science and Technology of China, Hefei, China

Competing Interests

Prof. Ian Vince McLoughlin has recently been appointed as a PLOS ONE Editorial Board member. This does not alter the authors' adherence with PLOS ONE editorial policies and criteria.

Author Contributions

Conceived and designed the experiments: YS IVM LRD. Performed the experiments: YS. Analyzed the data: YS IVM. Contributed reagents/materials/analysis tools: YS IVM LRD. Contributed to the writing of the manuscript: YS IVM LRD.