台灣地區華語之聲場語音清晰度評價測定法研究

A Study of the Chinese Articulation Standard Evaluation Method of Speech Intelligibility on Sound Fields in Taiwan

10.6377/JA.200306.0027

陳炯堯(Chiung-Yao Chen)；陳麗雪(Lih-Sueh Chen)；林葳(Wei Lin)

語音清晰度 ； 快速語音傳輸指標 ； 華語明瞭性標準語表 ； Speech intelligibility ； RASTI ； Chinese articulation standard test table

建築學報

43期（2003 / 06 / 01）

27 - 36

繁體中文

Evaluation standards for speech intelligibility in indoor sound fields have been studied for many years. In an auditorium, the acoustic quality and intelligibility of speech is influenced by the number and duration of sound reflections. The Rapid Speech Transmission Index (RASTI) is derived from a simple measurement for the evaluation of a sound field. The purpose of this study is to understand the relationship between the Chinese articulation standard and the RASTI ratio in Taiwan. The compounded vowels of single Chinese syllables were used to approximate 108 phonemics to build the test table for scoring intelligibility, according to the Chinese articulation standard in the Taiwan area. In this research, we surveyed 8 sound fields (with back ground noise less than NC-40) in auditoriums located in Taiwan. The results show a good correlation between the RASTI ratio and the intelligibility scores(r=0.90, R^2=0.82). Furthermore, we found the intelligibility score for some special Chinese syllables have inner differences (p＜0.001) in certain measurement tables.

Evaluation standards for speech intelligibility in indoor sound fields have been studied for many years. In an auditorium, the acoustic quality and intelligibility of speech is influenced by the number and duration of sound reflections. The Rapid Speech Transmission Index (RASTI) is derived from a simple measurement for the evaluation of a sound field. The purpose of this study is to understand the relationship between the Chinese articulation standard and the RASTI ratio in Taiwan. The compounded vowels of single Chinese syllables were used to approximate 108 phonemics to build the test table for scoring intelligibility, according to the Chinese articulation standard in the Taiwan area. In this research, we surveyed 8 sound fields (with back ground noise less than NC-40) in auditoriums located in Taiwan. The results show a good correlation between the RASTI ratio and the intelligibility scores(r=0.90, R^2=0.82). Furthermore, we found the intelligibility score for some special Chinese syllables have inner differences (p＜0.001) in certain measurement tables.

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