상세정보
학술지
Adaptive TCX Windowing Technology for Unified Structure MPEG-D USAC
- 발행일
- 201206
- 출처
- ETRI Journal, v.34 no.3, pp.474-477
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 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.
- KSP 제안 키워드
- Audio codec, Consistent quality, Dual-Mode, Linear prediction, Model structure, Reference Model, Single mode, Unified Speech and Audio Coding(USAC), coded excitation, frequency domain(FD)