Papers

스펙트럼 기반 여기신호 추출을 통한 HMM기반 음성합성기의 음질 개선 방법

Domestic Journal
2006~2010
작성자
한혜원
작성일
2010-01-01 01:47
조회
750
Authors : 이봉진, 김성우, 백순호, 김종진, 강홍구
Year : 2010
Publisher / Conference : 한국음향학회지
Volume : 29, 제 1호
Page : 82-90
본 논문에서는 HMM기반 음성합성시스템에서 합성음의 음질 개선을 위한 방법으로 스펙트럼 정보에 기반한 여기신호 추출방법을 제안한다. 제안된 방법은 스펙트럼 정보와 여기신호를 함께 통계적 모델로 만든 후에 합성 과정에서 스펙트럼 정보를 기반으로 여기신호를 추출해 냄으로써 스펙트럼 파라메터에 가장 적합한 여기신호를 사용할 수 있다. 제안된 방법으로 합성음의 음질을 MUSHRA 테스트 및 WB-FESQ점수를 통해 확인해 본 결과, 비슷한 조건에서 기존에 사용되는 STRAIGHT 방법을 이용한 합성음보다 좋은 음질을 얻을 수 있었다.
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