상세정보
학술지
Transform Coding Based on Source Filter Model in the MDCT Domain
- 저자
- 성종모, 고윤호
- 발행일
- 201306
- 출처
- ETRI Journal, v.35 no.3, pp.542-545
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 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.
- 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)