聽力損失患者之手持裝置化語音聽知覺訓練系統

Developing Handheld Device Based Auditory Training System for Hearing Impaired Subjects

聽力損失會嚴重影響語音聽辨能力，而聽力損失患者可藉由助聽輔具使用其殘存聽力，但需要透過語言治療師進行相關語音聽知覺訓練，以提升助聽輔具之成效，然而聽語訓練極為費時費力，且臨床語言治療師人力有限，故多委請主要照顧者自行進行居家語音聽知覺訓練，導致聽語訓練效果差異極大，因此發展居家語音聽知覺系統對於聽力損失者極為有幫助，同時透過歷程紀錄將有助於語言治療師進行聽力損失患者訓練活動之調整。本研究乃發展手持裝置化語音聽知覺訓練系統，以協助語言治療師進行居家語音聽知覺訓練，應用手持裝置之攜帶方便及不受場所限制的特性，提供便利之聽語訓練平台，依據臨床語言治療師之聽語訓練規範與臨床經驗，提供語音辨識及語音區辨訓練模式，藉由語音的頻率組成對於聽知覺反應之最適當頻段分析結果，進行訓練教材之難易度分析與設計，並自動產生訓練題目以提升訓練教材之多樣性，同時針對每位使用者，個別記錄其訓練歷程，以提供臨床語言治療師臨床聽語訓練活動之調整，進而提升臨床聽語訓練效果。實驗結果顯示，由17位受測者針對系統使用滿意度進行主觀測試，實驗結果為平均意見分數4.21，顯示使用者對系統接受度甚高，未來將進行本系統之臨床聽語訓練成效驗證。

Hearing loss seriously degrades the speech perception of a subject by impairing auditory discrimination. Hearing assistance devices can help sufferers to make the best use of their residual hearing ability. The effects of these devices for subjects depend on the auditory training provided by speech and language pathologists. However, such training is a time-consuming and expensive process. In clinical practice, speech and language pathologists teach a caregiver how to assist a subject’s auditory perception. However, the effects of auditory perception for subjects are quite different. Therefore, to develop a homecare auditory training system would be very useful for hearing impaired subjects. In this study, a handheld device based auditory training system has been developed to help hearing impaired subjects and speech and language pathologists. The proposed system contains two subsystems: one for distinguishing sounds and another for identifying a sound. Using the optimal octaves for Mandarin phonemes, the difficulties of paired test items are objectively estimated. An automatic item generation is proposed to provide diverse test items and increase the interest of auditory training. Finally, the training portfolio is recorded and provided to speech and language pathologists for adjusting training activities. To evaluate the proposed system, a mean opinion score was adopted in this study; the score is 4.21. So, the experimental results show that it is a feasible approach for users. In the future, this approach will be evaluated in clinical practice.