Kitayama, Itsuki
Hosokawa, Kiyohito
Iwaki, Shinobu
Yoshida, Misao
Miyauchi, Akira
Aruga, Kenji
Kawabe, Takanari
Kishikawa, Toshihiro
Tanaka, Hidenori
Tsuda, Takeshi
Sato, Takashi
Takenaka, Yukinori
Ogawa, Makoto
Inohara, Hidenori
Article History
Received: 8 March 2025
Accepted: 3 May 2025
First Online: 20 May 2025
Competing interests
: The authors declare no competing interests. I.K., K.H., and H.I. have applied for a patent related to this work (patent applicant, The University of Osaka; names of inventors, Itsuki Kitayama, Kiyohito Hosokawa and Hidenori Inohara; application number, 2024-087318; status of application, substantive examination; specific aspect of paper covered in patent application, fundamental frequency estimation algorithm that is robust and unaffected by voice quality).