Objective::The aim of this study is to develop and evaluate a set of psychometrically equivalent disyllabic wordlist(SC-10)in Singapore Mandarin for clinical use.Study design::A preliminary set of 1000 words were obta...Objective::The aim of this study is to develop and evaluate a set of psychometrically equivalent disyllabic wordlist(SC-10)in Singapore Mandarin for clinical use.Study design::A preliminary set of 1000 words were obtained from a dictionary of frequently used words by Singapore students.Ten native judges rate the familiarity level of each word.This is followed by a face-to-face public survey to rank the shortlisted word set from most to least familiar.The final 108 disyllabic words were recorded by a native female talker.20 normal hearing subjects were used to obtain the percentage of correct word recognition at 24 intensity levels(-10 dB HL to 26 dB HL in 2 dB increment).Psychometric function slopes were calculated for each word.100 words were eventually chosen and assigned into ten 10-word lists based on a psychometric balancing protocol.Minor digital adjustments were made to the intensity of each wordlist to improve their auditory homogeneity.Results::The calculated regression slopes in the psychometric functions for the ten lists are between 8.0 and 9.8%/dB.Single factor ANOVA analysis showed no significant difference in both the mean intensity required to obtain 50%recognition score(f=0.109,df=9,p=0.999)and the slopes of the psychometric functions(f=0.078,df=9,p=0.999)between the ten word lists.List validation on 25 normal hearing participants(PTA=11.0 dB HL,SD=4.3)showed a mean speech recognition threshold(SRT)of 9.3 dB HL(SD=3.5)and regression slope of 8.395%/dB.Quadratic regression analysis showed a positive correlation(r^(2)=0.923)between presentation level and word recognition score(WRS).The difference between PTA and SRT of each subject all fall within the clinically acceptable difference of 10 dB HL.Test-retest reliability,carried out on 20 subjects at three levels(SRT-5,SRT,and SRT+5 dB),showed no significance difference between word recognition score when the same participant is tested again at the same intensity level using a different wordlist.Conclusion::All in all,it shows that the SC-10 speech materials are valid for clinical use for Mandarin speech audiometry in Singapore.展开更多
目的探讨对正常青年人进行普通话言语测听材料（mandarin speech test materials,MSTMs）中的双音节词测试时信号与噪声空间分离对其言语识别能力的影响。方法使用MSTMs中的双音节词表对50例（预测试6例,正式测试44例）听力正常青年人...目的探讨对正常青年人进行普通话言语测听材料（mandarin speech test materials,MSTMs）中的双音节词测试时信号与噪声空间分离对其言语识别能力的影响。方法使用MSTMs中的双音节词表对50例（预测试6例,正式测试44例）听力正常青年人进行两种环境、六种信噪比（S/N）（噪声入射角为0°时信噪比为0、-2、-4、-6、-8、-10dB;噪声入射角为90°时信噪比为-10、-12、-14、-16、-18、-20dB）条件下的言语识别率测试。结果在噪声入射角为0°和90°时,随着信噪比降低,言语识别率为90%、80%、70%、60%、50%、40%、30%、20%时,0°~90°信噪比的差值分别为5、6.1、6.8、7.3、7.8、8.3、8.9、9.3。结论噪声和言语声的方向会影响言语识别率的得分,当噪声和言语声空间分离优势增大（噪声入射角0°~90°信噪比差值越小）时,言语识别率更好。展开更多
文摘Objective::The aim of this study is to develop and evaluate a set of psychometrically equivalent disyllabic wordlist(SC-10)in Singapore Mandarin for clinical use.Study design::A preliminary set of 1000 words were obtained from a dictionary of frequently used words by Singapore students.Ten native judges rate the familiarity level of each word.This is followed by a face-to-face public survey to rank the shortlisted word set from most to least familiar.The final 108 disyllabic words were recorded by a native female talker.20 normal hearing subjects were used to obtain the percentage of correct word recognition at 24 intensity levels(-10 dB HL to 26 dB HL in 2 dB increment).Psychometric function slopes were calculated for each word.100 words were eventually chosen and assigned into ten 10-word lists based on a psychometric balancing protocol.Minor digital adjustments were made to the intensity of each wordlist to improve their auditory homogeneity.Results::The calculated regression slopes in the psychometric functions for the ten lists are between 8.0 and 9.8%/dB.Single factor ANOVA analysis showed no significant difference in both the mean intensity required to obtain 50%recognition score(f=0.109,df=9,p=0.999)and the slopes of the psychometric functions(f=0.078,df=9,p=0.999)between the ten word lists.List validation on 25 normal hearing participants(PTA=11.0 dB HL,SD=4.3)showed a mean speech recognition threshold(SRT)of 9.3 dB HL(SD=3.5)and regression slope of 8.395%/dB.Quadratic regression analysis showed a positive correlation(r^(2)=0.923)between presentation level and word recognition score(WRS).The difference between PTA and SRT of each subject all fall within the clinically acceptable difference of 10 dB HL.Test-retest reliability,carried out on 20 subjects at three levels(SRT-5,SRT,and SRT+5 dB),showed no significance difference between word recognition score when the same participant is tested again at the same intensity level using a different wordlist.Conclusion::All in all,it shows that the SC-10 speech materials are valid for clinical use for Mandarin speech audiometry in Singapore.
文摘目的探讨对正常青年人进行普通话言语测听材料（mandarin speech test materials,MSTMs）中的双音节词测试时信号与噪声空间分离对其言语识别能力的影响。方法使用MSTMs中的双音节词表对50例（预测试6例,正式测试44例）听力正常青年人进行两种环境、六种信噪比（S/N）（噪声入射角为0°时信噪比为0、-2、-4、-6、-8、-10dB;噪声入射角为90°时信噪比为-10、-12、-14、-16、-18、-20dB）条件下的言语识别率测试。结果在噪声入射角为0°和90°时,随着信噪比降低,言语识别率为90%、80%、70%、60%、50%、40%、30%、20%时,0°~90°信噪比的差值分别为5、6.1、6.8、7.3、7.8、8.3、8.9、9.3。结论噪声和言语声的方向会影响言语识别率的得分,当噪声和言语声空间分离优势增大（噪声入射角0°~90°信噪比差值越小）时,言语识别率更好。
