초록

AI-Helper

국어 자음을 단어내 음운환경별로 실험해 본 결과, 국어의 자음변이 규칙이 반영된 일관성있는 음가변화를 발견하였다. 발견된 음가변화는, ⅰ) 장애음의 길이는 모음간보다 단어초가 길고, ⅱ) 공명음의 길이는 단어초와 모음간보다 단어말이 길며, ⅲ) /ㄹ/의 F2와 F3는 모음간이 낮고 단어말은 높다는 것이다.ⅰ) 이들 음향특징의 근거가 되는 국어의 자음변이 규칙은, ⅰ) 평음의 유성화 현상, ⅱ) 음절말 불파음화 현상, ⅲ) 단어초 기음화 현상, ⅳ) /ㄹ/ 음소의 [r]과 [l] 교체현상이다. 본 실험결과 제시된 변화값은 음성인식 및 합성에 응용될 때 인식의 정확성과 합성의 자연성을 향상시킬 수 있다.

Abstract ▼ AI-Helper

Acoustic cues of some consonantal phonology were tested in Korean words. All Korean consonants were recorded and acoustically analyzed in controlled phonological environments :ⅰ) word-initial, ⅱ) inter-vocalic, and ⅲ) word-final positions. The observed acoustic regulations are : ⅰ) The lengths o...

Acoustic cues of some consonantal phonology were tested in Korean words. All Korean consonants were recorded and acoustically analyzed in controlled phonological environments :ⅰ) word-initial, ⅱ) inter-vocalic, and ⅲ) word-final positions. The observed acoustic regulations are : ⅰ) The lengths of obstruents are longer word-initially than word-finally, ⅱ) The lengths of sonorants are longer word-finally than in word-initial or inter-vocalic positions, ⅲ) The formants of the lateral sound /l/ are higher word-finally than intervocalically. The phonological explanations of these acoustic regulations can be found in the rules of ⅰ) inter-vocalic voicing of plain stops, ⅱ) syllable-final unreleasing of obstruents, ⅲ) word-initial aspiration of stops, and ⅳ) liquid alternation between [r] and [l]. Numerical data of all these acoustic regulations are reported in order to facilitate their application toward improving naturalness for speech synthesis and accurateness for speech recognition.