發(fā)布時間：2018-08-01 15:54

【摘要】：目的:探討在普通話語境下WDRC(寬動態(tài)范圍壓縮算法)低頻釋放時間對助聽器佩戴者言語識別率的影響。方法:將低頻釋放時間設置為50、100、200、400、800ms五個組,分別在3種掩蔽噪聲下進行實驗,共形成15組實驗條件。以聽力障礙者作為實驗對象,以普通話言語仿真聲作為測試音,通過仿真平臺輸出,在特定的噪聲條件下測試言語識別率。結果:WDRC低頻釋放時間設置為400ms時,聽障者言語識別率最佳;Babble Noise(多說話人噪聲)對聽力障礙者的噪聲下言語識別率有顯著影響。結論:在普通話語境下低頻區(qū)間時間常數(shù)與噪聲類型都會影響聽力障礙者的普通話言語識別率。
[Abstract]:Aim: to investigate the effect of low frequency release time of WDRC (wide dynamic range compression algorithm) on speech recognition rate of hearing aid wearer in Mandarin context. Methods: the low frequency release time was set to five groups of 50100200400800ms, and the experiment was carried out under three kinds of masking noise, and 15 groups of experimental conditions were formed. The speech recognition rate was measured by using the speech simulation sound of Putonghua as the test sound and the speech recognition rate under the specific noise condition through the output of the simulation platform by taking the hearing impaired as the experimental object and the Putonghua speech simulation sound as the test sound. Results when the low frequency release time of WDRC was set to 400ms, the best speech recognition rate of hearing impaired persons was Babble Noise (multi-speaker noise). Conclusion: in the context of Putonghua, the low frequency interval time constant and the type of noise will affect the speech recognition rate of hearing impaired people.
【作者單位】： 上海市徐匯區(qū)中心醫(yī)院耳鼻咽喉科復旦大學附屬中山醫(yī)院徐匯醫(yī)院;中國科學院聲學研究所東海研究站;
【基金】：上海市衛(wèi)生和計劃生育委員會青年科研項目(No:2013-154)
【分類號】：R764.43
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本文編號：2158077