探讨Downs法测试言语识别阈的有效性

Exploration of the Validity of Test Speech Recognition Threshold by Downs Method

目的验证Downs法(1996)测试中文材料的言语识别阈(speech recognition threshold,SRT)的有效性,为临床SRT测试方法提供依据。方法选择104名受试者,分为健听组、感音神经性听力下降组和混合性听力下降组,比较Downs法(1996)与美国言语语言听力协会(Americaspeech-languagehearingassociation,ASHA)1988年发布的言语识别阈值测试方法测得的言语识别阈值、所需时间及一致性。结果 3组被试Downs法(1996)与ASHA(1988)测得的SRT值无显著差异,但Downs法(1996)测得SRT的所需时长极显著少于ASHA法(1988)(P<0.01),Downs法(1996)测得的SRT同PTA的差异在0.06～5.68dB,ASHA法(1988)所测得的SRT同PTA的差异在0.6～4.48dB。Downs法(1996)测得的SRT同PTA的一致性与ASHA法(1988)一致。结论 Downs(1996)是一种高效的言语识别阈测试方法,可用于临床工作中。

Objective To verify the validity of the method of speech recognition threshold(SRT)published by Downs(1996)using Chinese material.Methods 104 adults were recruited in the study,divided into three groups:the normal hearing group,the sensorineural hearing loss group and the mixed hearing loss group.SRTs were examined for all the subjects using the two different methods published by Downs(1996)and America Speech-Language hearing association(ASHA)(1988).The SRT values and the time consumption by the two methods were compared.Results There was no significant difference on the measured SRTs between the Downs(1996)method and the ASHA(1988)method.However,the Downs(1996)procedure was found to consume significantly less time than the ASHA(1988)procedure.The difference between SRT and PTA was 0.06~5.68 dB by Downs(1996)and 0.6~4.48 dB by the ASHA(1988).The measured SRTs via the two methods were consistent with PTA values.Conclusion The method published by Downs(1996)is fast and valid to test SRT using Chinese materials and can be implemented as a clinical speech test.