| Project/Area Number |
60880004
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Informatics
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| Research Institution | Utsunomiya University |
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Principal Investigator |
KASUYA HIDEKI Utsunomiya University, Associate Professor, 工学部, 助教授 (20006240)
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| Co-Investigator(Kenkyū-buntansha) |
KIKUCHI YOSHINOBU Utsunomiya University, Research Associate, 工学部, 助手 (20091944)
梶屋 猛 リオン(株), 聴能技術部, 部長
YOSHIDA HAJIME Yoshida Clinic, President, 耳鼻咽喉科, 院長
EBIHARA SATOSHI National Cancer Center Hospital, Department Chief Doctor, 頭頚科, 医長 (20109995)
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| Project Period (FY) |
1985 – 1986
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| Project Status |
Completed (Fiscal Year 1986)
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| Budget Amount *help |
¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 1986: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1985: ¥5,800,000 (Direct Cost: ¥5,800,000)
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| Keywords | Laryngeal Cancer / Mass Screening for Cancer / Speech analysis / 音声分析 / 音声評価 |
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| Research Abstract |
1.We have developed accurate methods to measure the pitch period and amplitude perturbation quotients and normalized noise energy as speech information factors which are associated with pathological status of the larynx. A novel adaptive comb filter has been devised in separating the noise from harmonic components.
2.We have derived spectral perturbation parameters called spectral perturbation quotient from the LPC spectrum which has shown to be effective in detecting pathological voice status.
3.We have developed a hardware, what is called integrated voice analyzer (IVA), which performs high-speed and accurate measuremsnts of the acoustic voice parameters including various pathological voice parameters explored in this research project. A voice evaluation system comprising the IVA and a personal computer gained good reputation at the exhibit of the International Conference of the International Association of Logopedics and Phoniatrics in Tokyo in 1986.
4.We have developed a portable screening system for laryngeal cancer as a useful application of the VES. It takes only one minute to obtain final screening results including all the acoustic measurements of the voice parameters from five utterances of the Japanese vowel /e/.
5.More tha 2000 subjects were analyzed by the portable screening system in the mass screening experiment for laryngeal cancer and two patients with the cancer were detected. In the experiment the system produced small amount of false negative erros with slightly increased number of the false positive errors as compared with the results of the perceptual evaluation of the same voice samples by a well-trained logopedician.
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