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학술지 Single-Mode-Based Unified Speech and Audio Coding by Extending the Linear Prediction Domain Coding Mode
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저자
백승권, 성종모, 이미숙, 이태진
발행일
201706
출처
ETRI Journal, v.39 no.3, pp.310-318
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.17.0116.0397
협약과제
16MR1200, (통합)초고품질 콘텐츠 지원 UHD실감 방송/디지털 시네마/사이니지 융합서비스 기술 개발, 최진수
초록
Unified speech and audio coding (USAC) is one of the latest coding technologies. It is based on a switchable coding structure, and has demonstrated the highest levels of performance for both speech and music contents. In this paper, we propose an extended version of USAC with a single-mode of operation which does not require a switching system by extending the linear predictioncoding mode. The main concept of this extension is the adoption of the advantages of frequency-domain coding schemes, such as windowing and transition control. Subjective test results indicate that the proposed scheme covers speech, music, and mixed streams with adequate levels of performance. The obtained quality levels are comparable with those of USAC.
키워드
AMR-WB+, HE-AACv2, USAC
KSP 제안 키워드
AMR-WB, Linear prediction, Mode of Operation, Quality level, Single mode, Subjective test, Transition control, Unified Speech and Audio Coding(USAC), frequency domain(FD), switching system
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