人工耳蝸植入兒童的嗓音音質分析

人工耳蝸植入技術的發展，植入人口的增加，使越來越多的重度，極重度耳聾患者重新獲取了聽力。但人工耳蝸植入兒童還存在嗓音問題。本文通過對人工耳蝸植入兒童以及正常兒童產出的持續母音/a/，/i/，/u/進行聲學分析，提取了最高基頻，最低基頻，基頻標準差，諧噪比，時長，基頻微擾，振幅微擾以及共振峰，等參數。比較了人工耳蝸植入兒童與正常兒童在上述參數上的平均值。發現兩組兒童在基頻，、時長以及振幅微擾上，存在顯著性差異。被試組的振幅微擾值大於控制組，時長比控制組短，基頻比控制組低。通過對第一諧波和第二諧波的差值比較發現，人工耳蝸植入兒童在持續母音的產出上，存在氣嗓音。並且本文的發現，將對人工耳蝸植入兒童的言語康復，特別是嗓音音質的改變提供了一些相關的教學意見。

With the development of cochlear implant technology, the population of implanted is largerand larger. So that severe hearing loss patients can regain hearing. But there are voice problems inchildren with cochlear implants. Based on cochlear implanted children and normal children output ofsustained vowel / a /, / i /, and / u / acoustic analysis, the extract of the highest frequency, lowestfundamental frequency, fundamental frequency standard deviation, harmonics to noise ratio, duration,jitter, amplitude perturbation and the formant, parameters were managed. The average values of theabove mentioned parameters were compared between the cochlear implant children and the normalchildren. It was found that there were significant differences between the two groups in thefundamental frequency, duration and amplitude. The amplitude of the test group was higher than thatof the control group, and the time length was shorter than that of the control group, and thefundamental frequency was lower than that of the control group. By the difference of the firstharmonic and second harmonic comparison, it is found that children with cochlear implants in vowel duration of output, breathy voice. And the findings of this paper will provide some relevant teachingsuggestions on the speech rehabilitation of cochlear implant children, especially the changes of thevoice quality.