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중국어 음성합성: 진단과 과제

Chinese Speech Synthesis: a Preliminary Evaluation and Remaining Issues

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주제분류중국어와문학

초록

음성기반 AI 프로그램의 핵심 요소인 음성합성 기술은 눈에 띄게 발전하였으며, 중국어 음성합성 품질도 최근 빠른 속도로 향상되어 여러 프로그램에서 활용되고 있다. 이 논문은 중국어 음성 또는 교수·학습 연구자가 자주 사용하는 몇 가지 프로그램이 제공하는 합성음성의 문제점을 진단하고, 품질 개선을 위하여 요구되는 운율 모델링에 대한 논의를 진행한다. 이와 더불어 중국어 연구와 교수·학습을 위하여 필요한 음성데이터의 종류와 전략적 구축 방법을 제시하고, 음성학적 모델링과 공학적 모델링의 학제적 개발이 중국어 음성·음운 연구에 미치는 영향을 논의한다.

Abstract

Recent years have witnessed the remarkable improvement of speech synthesis technology, which is a fundamental component of numerous AI programs. Chinese text-to-speech technology, which has been also rapidly improved, is used in a variety of programs for language teaching and learning as well as automatic translation. This paper examines major problems with Chinese synthesized speech in several widely-used programs, and discusses the prosodic modeling and the types of speech database that can be used to enhance the naturalness of synthesized speech sounds. It further notes that an increasing body of interdisciplinary research between phonetics and engineering may help to develop new analytic methods in the field of Chinese phonology and phonetics.

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