현재, 극장 사운드를 중심으로 객체기반 오디오 기술을 포함하는 하이브리드 포맷의 사운드 서비스가 점차 확산되고 있으며, 미국, 유럽, 한국 등에서는 차세대 방송용 오디오에 객체기반 오디오 기술의 도입을 적극적으로 고려하고 있다. 객체기반 오디오 기술은 콘텐츠의 제작단계에서 재생환경을 고려할 필요가 없고, 현장의 음향을 신호와 3차원 공간정보로 구분하여 음향공간의 정보를 그대로 표현함으로써, 재생단말에서 3차원 공간정보를 활용하여 재생할 수 있게 한다. 이러한 객체기반 실감음향 기술개발을 위해서는 편리한 제작 및 3차원 공간정보 표현 기술이 필요하며, 청취환경에서는 객체기반 실감음향 콘텐츠를 제작자의 의도대로 렌더링할 수 있는 재생 및 제어 기술이 필요하다. 이에 객체기반 실감음향 기술이 포함되는 하이브리드 오디오 기술의 현황에 대하여 살펴보고자 한다.
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