【摘要】：目的:探討在普通話語境下WDRC(寬動(dòng)態(tài)范圍壓縮算法)低頻釋放時(shí)間對(duì)助聽器佩戴者言語識(shí)別率的影響。方法:將低頻釋放時(shí)間設(shè)置為50、100、200、400、800ms五個(gè)組,分別在3種掩蔽噪聲下進(jìn)行實(shí)驗(yàn),共形成15組實(shí)驗(yàn)條件。以聽力障礙者作為實(shí)驗(yàn)對(duì)象,以普通話言語仿真聲作為測(cè)試音,通過仿真平臺(tái)輸出,在特定的噪聲條件下測(cè)試言語識(shí)別率。結(jié)果:WDRC低頻釋放時(shí)間設(shè)置為400ms時(shí),聽障者言語識(shí)別率最佳;Babble Noise(多說話人噪聲)對(duì)聽力障礙者的噪聲下言語識(shí)別率有顯著影響。結(jié)論:在普通話語境下低頻區(qū)間時(shí)間常數(shù)與噪聲類型都會(huì)影響聽力障礙者的普通話言語識(shí)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(fù)旦大學(xué)附屬中山醫(yī)院徐匯醫(yī)院;中國(guó)科學(xué)院聲學(xué)研究所東海研究站;
【基金】：上海市衛(wèi)生和計(jì)劃生育委員會(huì)青年科研項(xiàng)目(No:2013-154)
【分類號(hào)】：R764.43
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本文編號(hào)：2158077