한국어 TTS 경음화 발음의 국어학적 점검 = Korean linguistic examination of tensification pronunciation pruduced by Korean TTS

다국어 초록 (Multilingual Abstract)

The purpose of this study is to suggest how to improve pronunciation of Korean TTS from the point of view of Korean language. In particular, this study focused on the tensification pronunciation of TTS. For this purpose, this study examined the tensification pronunciation of Korean TTS. The pronunciation examination was done in two steps. The first step was a basic examination. We examined whether Korean TTS applied the six tensification rules of the standard pronunciation regulation. The six tensification rules were examined in 11 subtypes. The second step was a deepening examination. The problems arising from the basic examination were examined more closely. The deepening examination extended the number of words to be examined. Examination of the pronunciation of the TTS revealed problems with the four types of the tensification. Based on the results, this study proposed the following to improve the pronunciation of the tensification. (1) The pronunciation information must be faithfully attached to the words related to the tensification. (2) In order to process the tensification that occurs when the stem and the ending combine, the pronunciation information related to the tensification must be attached to the stem and the ending. (3) When the dependent nouns are combined after the adnominal form '-(으) ㄹ' in predicate, the rules of tensification should be applied carefully. (4) Regardless of the spacing, when a chain of obstruent sounds occurs in consecutive nouns, the obstruent sound in the back should be pronounced as tensificated sound. In order for these studies to lead to substantial improvements in TTS, collaboration between engineering and linguistics is required.

참고문헌 (Reference)

1 국립국어원, "한글 맞춤법, 표준어 규정 해설"

2 류혁수, "한국인 화자의 외래어 발음 변이 양상과 음절 기반 외래어 자소-음소 변환" 한국음성학회 7 (7): 139-149, 2015

3 강범모, "한국어 사용 빈도" 한국문화사 2009

4 임현열, "한국어 TTS에 적용되는 /ㄴㄹ/ 연쇄의 발음 처리에 대하여－TTS의 발음에 대한 국어 음운론적 관점의 진단－" 국어국문학회 (187) : 103-135, 2019

5 임현열, "자연스러운 TTS 구현을 위한 ㄴ 첨가 처리 방안 ― 표준 발음과 현실 발음의 조화 모델 중심으로" 중앙어문학회 73 : 31-59, 2018

6 신지영, "우리말 소리의 체계" 한국문화사 2003

7 김성돈, "문장에 포함된 외국어의 자연스러운 발음 표현을 위한 LSTM 방법" 한국정보처리학회 8 (8): 163-170, 2019

8 임현열, "네이버 파파고와 구글 번역기 음성 산출의 연음 현상에 관한 연구" 한말연구학회 (47) : 213-236, 2018