Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NAKAYAMA Ichiro and OKADA Toshie and NAKAGAWA Mikaho,Objective evaluation of voice timbre in autophonic production,IPSJ SIG Notes,09196072,Information Processing Society of Japan (IPSJ),1999-02-18,29,,5-8,https://cir.nii.ac.jp/crid/1573387452012706176,