廳堂之中文語音清晰度與訊號自函數之關聯性研究－以台灣地區華語為主

A Study of the Chinese Speech Intelligibility in Halls in Relation to the Autocorrelation Function Model: A Case of Chinese in Taiwan

陳炯堯(Chiung-Yao Chen) ； 詹旻憲(Min-Hsien Chan)

《建築學報》 57期 (2006/09) Pp. 55-68

https://doi.org/10.6377/JA.200609.0055

摘要

Today, the English-based rapid speech transmission index (RASTI) is a command tool used in Taiwan to serve as the basis for evaluating sound field in the measurement of speech intelligibility in halls. In the previous study (Chen et al., 2003), the results of Chinese-based articulation test of mono-syllabic test lists in halls were similar to those of the RASTI. However, there is a significant finding that among different monosyllables, there were few monosyllables possessed individual difference. Thus, in a study of speech intelligibility in halls, it is important to consider the quality of sound reception of halls as well as the pronunciation features of monosyllables. The aim of this study is to consolidate the two aforementioned questions to analyze the inadequacy of RASTI method and to discuss whether the physical properties of Chinese speech is correlated to results of test lists by proposing new speech analysis method such as autocorrelation function, ACF. In this study, there were 7 sound fields being surveyed, and by comparatively analyzing 84 survey points, the results indicated that, as far as a sound field is concerned, the minimum autocorrelation function (τ(subscript e))(subscript min) was significantly correlated (p＜0.01) with the articulation scores collected from each survey point. Meanwhile, after analyzing the sound field further, the finding indicated that the minimum autocorrelation function (τ(subscript e))(subscript min) can effectively detect different construction of monosyllables that may vary significantly (r=0.81, p＜0.01) due to different place of articulation and different vowel articulation.

關鍵字

語音清晰度 ； 自函數 ； 單音節檢測音表

並列摘要

Today, the English-based rapid speech transmission index (RASTI) is a command tool used in Taiwan to serve as the basis for evaluating sound field in the measurement of speech intelligibility in halls. In the previous study (Chen et al., 2003), the results of Chinese-based articulation test of mono-syllabic test lists in halls were similar to those of the RASTI. However, there is a significant finding that among different monosyllables, there were few monosyllables possessed individual difference. Thus, in a study of speech intelligibility in halls, it is important to consider the quality of sound reception of halls as well as the pronunciation features of monosyllables. The aim of this study is to consolidate the two aforementioned questions to analyze the inadequacy of RASTI method and to discuss whether the physical properties of Chinese speech is correlated to results of test lists by proposing new speech analysis method such as autocorrelation function, ACF. In this study, there were 7 sound fields being surveyed, and by comparatively analyzing 84 survey points, the results indicated that, as far as a sound field is concerned, the minimum autocorrelation function (τ(subscript e))(subscript min) was significantly correlated (p＜0.01) with the articulation scores collected from each survey point. Meanwhile, after analyzing the sound field further, the finding indicated that the minimum autocorrelation function (τ(subscript e))(subscript min) can effectively detect different construction of monosyllables that may vary significantly (r=0.81, p＜0.01) due to different place of articulation and different vowel articulation.

並列關鍵字

speech intelligibility ； autocorrelation function ； mono-syllabic test lists

參考文獻

陳炯堯、林葳、陳麗雪(2003)。台灣地區華語之聲場語音清晰度評價測定法研究。中華民國建築學會建築學報第43期。43，27-36。

是永雄二、安藤四一(1996)。音場の時間構造が音声明瞭度に及ぼす影響の予側法-2波までの反射音場における音節異聴。日本音響学会誌。52(12)，940-947。

Onaga, H.,Furue, Y.,Ikeda, T.(2000).Study on the validity of STI as a measure of speech intelligibility.Journal of Architectural Society.533,1-8.

Sakamoto, S.,Suzuki, Y.,Amano, S.,Ozawa, K.,Kondo T.,Sone, T.(1998).New lists for word intelligibility test based on word familiarity and phonetic balance.Journal of Acoustical Society.54,842-849.

Tronchin, L.,Farina, A.(1997).The acoustics of the former Teatro "La Fenice" in Venice.Journal of the Audio Engineering Society.