MPEG Surround는 멀티채널 오디오 신호를 모노 혹은 스테레오로 다운믹스한 신호와 멀티채널 신호가 다운믹스되는 과정에서 생성되는 공간 파라미터를 이용하여 효율적으로 부호화하는 기술이다. 기존의 오디오 코덱들이 심리음향모델에 기반한 인간의 청각특성을 이용하는데 반해, MPEG Surround는 오디오 신호의 공간상의 이미지를 효과적으로 표현하는데 초점을 맞추고 있다. MPEG Surround의 다운믹스 신호는 AAC와 같은 기존의 오디오 압축기술을 이용하므로 역호환성을 제공하며, 멀티채널 복원을 위한 공간 파라미터는 채널간 크기 차이와 상관도 등 으로 구성되므로 매우 낮은 비트율로 표현할 수 있다. 따라서 호환성과 고압축율을 가지는 MPEG Surround는 현재 급속하게 확대되고 있는 멀티채널 오디오 재생 환경과 다양한 멀티채널 컨텐츠에 대한 수요의 증가로 인해 멀티채널 방송 및 컨텐츠 서비스에 이용될 것으로 예상된다.
Copyright Policy
ETRI KSP Copyright Policy
The materials provided on this website are subject to copyrights owned by ETRI and protected by the Copyright Act. Any reproduction, modification, or distribution, in whole or in part, requires the prior explicit approval of ETRI. However, under Article 24.2 of the Copyright Act, the materials may be freely used provided the user complies with the following terms:
The materials to be used must have attached a Korea Open Government License (KOGL) Type 4 symbol, which is similar to CC-BY-NC-ND (Creative Commons Attribution Non-Commercial No Derivatives License). Users are free to use the materials only for non-commercial purposes, provided that original works are properly cited and that no alterations, modifications, or changes to such works is made. This website may contain materials for which ETRI does not hold full copyright or for which ETRI shares copyright in conjunction with other third parties. Without explicit permission, any use of such materials without KOGL indication is strictly prohibited and will constitute an infringement of the copyright of ETRI or of the relevant copyright holders.
J. Kim et. al, "Trends in Lightweight Kernel for Many core Based High-Performance Computing", Electronics and Telecommunications Trends. Vol. 32, No. 4, 2017, KOGL Type 4: Source Indication + Commercial Use Prohibition + Change Prohibition
J. Sim et.al, “the Fourth Industrial Revolution and ICT – IDX Strategy for leading the Fourth Industrial Revolution”, ETRI Insight, 2017, KOGL Type 4: Source Indication + Commercial Use Prohibition + Change Prohibition
If you have any questions or concerns about these terms of use, or if you would like to request permission to use any material on this website, please feel free to contact us
KOGL Type 4:(Source Indication + Commercial Use Prohibition+Change Prohibition)
Contact ETRI, Research Information Service Section
Privacy Policy
ETRI KSP Privacy Policy
ETRI does not collect personal information from external users who access our Knowledge Sharing Platform (KSP). Unathorized automated collection of researcher information from our platform without ETRI's consent is strictly prohibited.
[Researcher Information Disclosure] ETRI publicly shares specific researcher information related to research outcomes, including the researcher's name, department, work email, and work phone number.
※ ETRI does not share employee photographs with external users without the explicit consent of the researcher. If a researcher provides consent, their photograph may be displayed on the KSP.