著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) ISHIZUKA Kentaro,Study of noise robust voice activity detection based on periodic compnent to aperiodic component ratio,SAPA2006,,,2006,,,,https://cir.nii.ac.jp/crid/1573387450321967744,