@article{oai:nagoya.repo.nii.ac.jp:00031497,
 author = {Ochiai, Yoshiyuki and Fukumura, Teruo},
 issue = {1},
 journal = {Memoirs of the Faculty of Engineering, Nagoya University},
 month = {Sep},
 pages = {77--94},
 title = {Timbre study of vocalic voices viewed from subjective phonal aspect : Part I. Preliminary studies on naturalness and articulation qualities actually and directly measured with respect to band-eliminating distortion},
 volume = {8},
 year = {1956}
}