Synopsis of key findings
Until now, recordings of only 94 children have been evaluated, and the results indicated that the method could yield precise information in evaluating intelligibility. The ASR score is lower than the traditional assessment score. In most cases, the ASR recognition gap is large, but when the score is higher, the gap decreases. The possible reasons are as follows. The intelligibility of speech depends on five factors: the speaker, the speech (content familiarity), the content length, the grammatical complexity or perplexity and the input medium.6 When the ASR system assesses the intelligibility of speech from an individual, it compares the spectral and temporal characteristics of the signal of the acoustic speech samples with according transliteration. The internal recognition system had been trained with acoustic information from normal speech speakers, so the system will be only able to accurately recognize speech that is highly intelligible and will be more error-prone when given speech that differs greatly from normal speech.
Strengths and