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학술지 Adaptive TCX Windowing Technology for Unified Structure MPEG-D USAC
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저자
이태진, 백승권, 강경옥, 김환우
발행일
201206
출처
ETRI Journal, v.34 no.3, pp.474-477
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.12.0211.0404
협약과제
11PR5100, UHDTV 방송 표준 개발, 이태진
초록
The MPEG-D unified speech and audio coding (USAC) standardization process was initiated by MPEG to develop an audio codec that is able to provide consistent quality for mixed speech and music contents. The current USAC reference model structure consists of frequency domain (FD) and linear prediction domain (LPD) core modules and is controlled using a signal classifier tool. In this letter, we propose an LPD singlemode USAC structure using an adaptive widowing-based transform-coded excitation module. We tested our system using official test items for all mono-evaluation modes. The results of the experiment show that the objective and subjective performances of the proposed single-mode USAC system are better than those of the FD/LPD dual-mode USAC system. © 2012 ETRI.
키워드
AAC, MPEG-D USAC, TCX
KSP 제안 키워드
Audio codec, Consistent quality, Linear prediction, Model structure, Reference Model, Single mode, Unified Speech and Audio Coding(USAC), coded excitation, dual mode, frequency domain(FD)