健听儿童与听障儿童舌根塞音构音异常声学特征的比较研究

本研究探讨了120名健听儿童／g／.／k／时长和频区的特征，并将52名听障儿童主客观评估结果与健听儿童的结果进行对比。研究结果显示健听儿童习得／g／／k／后，随着年龄的增长，时长和频区均无显著变化；女孩时长大于男孩，男女频区无显著差异；／k／与／g／相比时长长，频区高；舌根塞音与／ao／和n／u／分别相拼时相比，时长短、频区高。临床上若／kao／和／ku／的时长小于健听儿童参考范围或／gao／、／gu／和／ku／的频区大于健听儿童参考范围时，可以推测可能存在发音部位前移问题。研究得到了健听儿童／g／、／k／时长和频区的参考范围，为临床治疗提供了参考依据。

A comparative study on the acoustic characteristics of velar stops in normal-hearing and hearing-impaired children

This paper explored the characteristics of duration and frequency region of/g/and / k/ in 120 children with normal hearing. Then the assessment outcomes of 52 children with hearing impairment were compared with those of the normal-hearing children. The results showed that there was no significant difference in the duration and frequency region of/g/and /k/with the increase of age in normal-hearing children after their acquisition of these two sounds. The duration of females was longer than males, but no significant difference was observed in the frequency region. The duration of/k/was longer than that of/g/and the frequency of/k/was higher than that of/g/, when the velar stops were accompanied by/ao/and/u/, they had a shorter duration and a higher frequency. The results indicate that when the duration of/kao/or/kQ/is below the reference range or the frequency of/gao/,/gu/and /ku/is above the reference range, it may be induced by the fronting of articulation position. The study also identifies the reference range of the duration and frequency region of/g/and /k/, which may be applied to the clinical practice.