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학술지 Transform Coding Based on Source Filter Model in the MDCT Domain
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저자
성종모, 고윤호
발행일
201306
출처
ETRI Journal, v.35 no.3, pp.542-545
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.13.0212.0368
협약과제
12PR1600, 무안경 다시점 3D지원 UHDTV 방송 기술 개발, 김진웅
초록
State-of-the-art voice codecs have been developed to extend the input bandwidth to enhance quality while maintaining interoperability with a legacy codec. Most of them employ a modified discrete cosine transform (MDCT) for coding their extended band. We propose a source filter model-based coding algorithm of MDCT spectral coefficients, apply it to the ITU-T G.711.1 super wideband (SWB) extension codec, and subjectively test it to validate the model. A subjective test shows a better quality over the standardized SWB codec. © 2013 ETRI.
키워드
G.711.1 Annex D, MDCT, Source filter model, Transform coding
KSP 제안 키워드
Filter model, ITU-T, Model-based coding, Modified Discrete Cosine Transform(MDCT), Subjective test, Transmission gate(TG), Voice Codecs, coding algorithm, spectral coefficients, state-of-The-Art, super wideband(SWB)