Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Design of the TCX module transform coefficients quantizer in AMR-WB+ codec using PVQ

PVQ 방식을 이용한 AMR-WB+ 코덱의 TCX 모듈 변환계수 양자화기 설계

  • Park, Sang-Kuk (School of Electrical Eng. Computer Science, Hanyang University) ;
  • Park, Jung-Eun (School of Electrical Eng. Computer Science, Hanyang University) ;
  • Kang, Sang-Won (School of Electrical Eng. Computer Science, Hanyang University)
  • 박상국 (한양대학교 전자컴퓨터공학부) ;
  • 박정은 (한양대학교 전자컴퓨터공학부) ;
  • 강상원 (한양대학교 전자컴퓨터공학부)
  • Published : 2007.07.11
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Abstract

In this paper, we propose a Pyramid VQ(PVQ) to quantize the transform coefficients of TCX module for the music improvement of AMR-WB+ codec. The proposed PVQ is compared to the $RE_8$ Lattice VQ used in the AHR-WB+ standard codec, demonstrating improvement 4% and 5.7%, respectively, in Mean Squared Error(MSE) and 3.3% and 4.7%, respectively, in Perceptual Evaluation of Audio Quality(PEAQ) by 8-dimensional and 16-dimensional Pyramid VQ.

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