Auditory Analysis Of Temporally Distorted Sentential Approximations

Previous investigators have emphasized the significant role of time in auditory perceptual processing. Two factors important in this process are word duration and interstimulus interval. This study was designed to investigate the perceptual consequences of independent modification of these two factors, using two orders of sentential approximations. The results show that while both temporal factors operate in perceptual accuracy, word duration plays a more significant role than interstimulus interval. Also, perceptual errors may be offset by increasing the order of sentential approximations. The results are discussed in view of their implications for audiological assessment.     

经康复训练的听障儿童与正常儿童听觉记忆发展特征的比较研究

目的探讨经康复训练的4岁和5岁听障儿童听觉记忆发展的特征及其与同龄正常儿童的差别。方法根据记忆广度法对4岁和5岁正常儿童及经康复训练半年以上的听障儿童各15例分别进行单音节、双音节、三音节汉语词汇的听觉记忆容量测试,记录其听到中文词汇声音后正确指认对应图片的最大个数,对结果进行方差分析。结果①4岁正常儿童的单音节、双音节、三音节词汇平均听觉记忆容量分别为3.00、2.87、2.67个词汇,5岁分别为3.93、4.13、3.53个词汇;4岁听障儿童的单音节、双音节、三音节词汇听觉记忆容量分别为2.53、3.07、2.60个词汇,5岁分别为3.27、3.47、3.13个词汇。②听力情况主效应不显著(F=3.567,P>0.05),年龄主效应极其显著(F=28.006,P<0.01),音节数主效应极其显著(F=9.495,P<0.01),各因素间无交互作用。结论①4岁和5岁正常儿童与经康复训练的听障儿童听觉记忆无明显差别,都随年龄增长而增长。②儿童听觉记忆受音节数的影响较大,对双音节词汇的听觉记忆优于单音节和三音节词汇。     

Use of Frequency-Shifted/Time-Compressed Speech with Hearing-Impaired Children

Several electromechanical aids to education for hearing-impaired children have been studied. One method that has received minimal attention is that of frequency-shifted/time-compressed (FS/TC) speech. This study was designed to determine if intelligibility scores on a standard intelligibility measure for children, whereby the words on the test were modified by 35% FS/TC, would show improvement from a pre- to a post-testing session. Nine hearing-impaired children were presented a 0 and 35% FS/TC speech pre-test, then trained for 15 days using 35% FS/TC speech signals, and subsequently were presented a 0 and 35% FS/TC speech post-test. A second group of 9 hearing-impaired children were presented similar pre- and post-tests, but were trained under a 0% FS/TC speech condition. The group trained under the 35% FS/TC speech condition showed score gains from the pre- to post-test session, whereas the 0% FS/TC speech group showed essentially no gains from the pre- to the post-test session. The potential application of FS/TC speech to the education of hearing-impaired children was discussed