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目的 研究启动效应对不同语种噪声下的英语言语识别能力的影响。方法 对21例（男11例，女10例）听力正常的汉-英双语青年（以汉语为母语，英语为第二语言）进行4种条件下（英语噪声无启动，汉语噪声无启动，英语噪声有启动和汉语噪声有启动）的英语语句识别阈（Recognition Threshold for Sentence, RTS）测试和英语言语识别率（Word Recognition Score, WRS）测试，分别获得在有无启动效应的两种情况下英语噪声和汉语噪声中的RTS和信噪比（signal-to-noise ratio, SNR）为0,4,8 dB时的WRS。RTS越低或者WRS越高表明言语识别能力越好。分别比较RTS和WRS，分析启动效应对汉语和英语噪声下言语识别造成的影响。结果 除信噪比为8dB的英语噪声下WRS测试外(78.73±7.45%, 80.44±7.12%)，其他测试情况下启动效应均有降低RTS或提高WRS的作用(P<0.05)。启动效应在英语噪声下对RTS的降低作用(3.64±2.18 dB SNR)显著强于汉语噪声(1.73±2.73 dB SNR)(P<0.05)。启动效应在英语噪声下对WRS的提高作用在0dB信噪比时(16.53±11.80%)显著强于汉语噪声(12.05±11.82%)，而当信噪比为8dB时(1.71±6.90%)显著弱于汉语噪声(7.65±10.10%)。结论 启动效应确实能够提高汉-英双语者在不同语种的噪声下的英语言语识别能力，但是随着信噪比的提高，启动效应对言语识别的提升作用在不同的语种噪声下会有不同程度的减弱。
Abstract：Objective To investigate the influence of priming on English speech recognition ability under different language babble noises. Methods Twenty-one(11 males and 10 females) Chinese-English bilingual participants(native Chinese speakers with English as the second language) with normal hearing were tested by the Recognition Threshold for Sentence(RTS) and Word Recognition Score(WRS) under 4 conditions, i.e. English noise without priming, Chinese noise without priming, English noise with priming and Chinese noise with priming, at signal-to-noise ratios(SNRs)of 0, 4 and 8 dB. RTS and WRS scores were compared to determine the influence of priming on speech recognition under Chinese and English noises. Result Priming reduced RTS and improved WRS under all test conditions(P<0.05), except for WRS when SNR = 8 dB(78.73±7.45% vs 80.44±7.12%), The effect of priming on RTS under English noise(SNR = 3.64±2.18 dB) was significantly stronger than that under Chinese noise(SNR = 1.73±2.73 dB)(P<0.05). The effect on WRS was significantly stronger under English noise(16.53±11.80%) than under Chinese noise(12.05±11.82%)when SNR = 0 dB, and significantly weaker under English noise(1.71±6.90%) than under Chinese noise(7.65±10.10%)at 8 dB SNR. Conclusion The priming effect can indeed improve English speech recognition ability against language noise in Chinese-English bilinguals, although the benefits appear to decrease with the increase of SNR depending on the type of language noises.
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基本信息:
中图分类号:R764
引用信息:
[1]吴宇鹏,胡旭君.启动效应对不同噪声下英语言语识别的影响[J].中华耳科学杂志,2022,20(05):851-856.
2022-10-15
2022-10-15