Ashikawa, Masayuki, Takahiro Kawamura, and Akihiko Ohsuga. 2014. “Speech Synthesis Data Collection for Visually Impaired Person”. Proceedings of the AAAI Conference on Human Computation and Crowdsourcing 2 (1):3-5. https://doi.org/10.1609/hcomp.v2i1.13206.