@techreport{weko_98454_1,
   author	 = "Hideki,Kawahara and Shohei,Mizobuchi and Masanori,Morise and Ken-ichiSakakibara and Ryuichi,Nisimura and Toshio,Irino",
   title	 = "Realtime conversion of growl-type voice qualities based on modulation and approximate time-varying filtering driven by a non-linear oscillator: Formulation",
   year 	 = "2014",
   institution	 = "Wakayama University, Wakayama University, University of Yamanashi, Health Science University of Hokkaido, Wakayama University, Wakayama University",
   number	 = "14",
   month	 = "feb"
}