11th Annual Conference of the International Speech Communication Association

Makuhari, Chiba, Japan
September 26-30. 2010

Longitudinal Changes of Selected Voice Source Parameters

Hideki Kasuya (1), Hajime Yoshida (2), Satoshi Ebihara (3), Hiroki Mori (1)

(1) Utsunomiya University, Japan
(2) Yoshida Clinic, Japan
(3) Kyoundo Hospital, Japan

Longitudinal changes were investigated for selected voice source parameters: fundamental frequency (F0), jitter (period perturbation quotient, PPQ), shimmer (amplitude perturbation quotient, APQ) and glottal noise (normalized noise energy, NNE). Acoustic analyses were made on the sustained phonation of the Japanese vowel /a/ of 20 males and 38 females with no laryngeal disease, which were recorded over periods ranging from 10 to 18 years. The longitudinal change of the parameters was evaluated by the statistical t-test, revealing that: 1) strong individuality existed for significant longitudinal changes in the acoustic parameters, 2) F0 falling is a more typical tendency of vocal aging of females than males, while F0 rising, which has been pointed out in the previous reports for males, was not found, 3) shimmer is a more observable indication of vocal aging than jitter, and 4) glottal noise in a high-frequency region tends to increase with aging.

Full Paper

Bibliographic reference.  Kasuya, Hideki / Yoshida, Hajime / Ebihara, Satoshi / Mori, Hiroki (2010): "Longitudinal changes of selected voice source parameters", In INTERSPEECH-2010, 2570-2573.