Masataka Goto Jun Ogata Kazuyoshi Yoshii Hiromasa Fujihara Matthias Mauch Tomoyasu Nakano PodCastle and songle: Crowdsourcing-based web services for spoken document retrieval and active music listening. 298-299 2012 ITA http://dx.doi.org/10.1109/ITA.2012.6181786 conf/ita/2012 db/conf/ita/ita2012.html#GotoOYFMN12