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題名 | 正常聽力耳鳴患者於噪音背景之語音辨識探究=The Investigation of Speech Perception in Noise of Tinnitus Suffers with Normal Hearing |
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作者 | 李恆惠; 黃啟原; 吳俊良; 陳小娟; | 書刊名 | 臺灣聽力語言學會雜誌 |
卷期 | 23 2009.07[民98.07] |
頁次 | 頁21-29 |
分類號 | 416.868 |
關鍵詞 | 耳鳴; 語音聽辨; 背景噪音; 信噪比; 文意線索; Tinnitus; Speech perception; Background noise; S/N ratio; Context cues; |
語文 | 中文(Chinese) |
中文摘要 | 背景:耳鳴是一種多方面失調的耳朵症狀,臨床上有些耳鳴者會抱怨有語音聽取的困難,尤其是在嘈雜的環境中。雖然耳鳴經常會伴隨聽力損失出現,但亦不乏有聽力為正常或是接近正常者,抱怨他們耳鳴的聲音會干擾到語音的聽取。本研究的目的,是探討聽力正常的個案是否會因耳鳴之有無而影響其語音聽辨的表現。 方法:17名聽力正常的耳鳴者,與19名聽力正常而無耳鳴者,比較其在傳統的語音均衡聽辨測驗(PB test),與信噪比+6dB、0dB兩種情境下之噪音背景辨識語音測驗(SPIN test)的聽辨表現。 結果:在PB test方面,耳鳴組平均得分為94.12(±5.50),正常組為95.16(±3.91),兩組差異未達顯著水準(p=.514)。在SPIN test方面,當信噪比為+6dB時,耳鳴組(99.53±1.33)與正常組(99.79±0.92)的高預測度句子(HP sentences)得分沒有顯著差異,而當信噪比為0dB時,耳鳴組得分(95.53±4.45)顯著低於正常組(98.95±1.81)(P<.001)。在低預測度(LP sentences)句子得分方面,不論信噪比為+6dB(耳鳴組=89.88±6.02, 正常組=95.58±3.24, p<.05)或是0dB(耳鳴組=77.18±9.88,正常組=89.47±5.69, p<.0001),耳鳴組的得分顯著均低於正常組。 結論:在安靜的測試環境中,傳統的語音測驗,看不出正常聽力耳鳴者語音聽辨的問題。當句子信號音量較噪音大且對話具文意線索時,耳鳴者的語音聽辨與常人無異。然而當信噪比下降時(0 dB Signal to noise ratio, S/N),或是語句中缺乏文意線索時,正常聽力的耳鳴者聽取他人說話都比非耳鳴者困難。由此可見,單純耳鳴因素是會造成語音聽取的影響,且噪音與文意線索對耳鳴者語音聽辨的影響比一般人大。 |
英文摘要 | The purpose of the study was to investigate the effect of tinnitus upon speech recognition in normal hearing tinnitus subjects. Seventeen normal hearing subjects with tinnitus which lasting more than 2 months as the tinnitus group, and nineteen normal hearing subjects without tinnitus as the control group. The speech tasks and the conditions administered to the two groups included MPB (Mandarin Phonetic Balance test) test in quiet, HP (high-predictability) and LP (low-predictability) sentences of Mandarin SPIN (MSPIN) test in +6dB and 0dB signal to noise ratio (S/N). Our result showed no significant difference in the Mandarin PB scores. For HP sentences, no significant difference was found in +6 dB S/N condition and a significant difference in 0dB S/N (p<.001) condition. For LP sentences, significant differences were found in both +6 dB (p<.05) and 0 dB S/ N (p<.001) conditions. Our result suggested that under easier listening condition and the context cues were provided, the speech perception of tinnitus group was as good as that of control group. However in noisy environment, in spite of context cues provided, tinnitus itself does affect speech understanding. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。