Earticle

초록

영어

Linde–Buzo–Gray (LBG) algorithm is a universal method to design codebook in vector quantization(VQ). This paper proposed an adaptive orthogonal M-split initialization method to improve the computational efficiency of LBG algorithm. The method splits one code word into 2, 4 or 5 new code words with adaptive split coefficient vectors and set the increment to be orthogonal in 4-split and 5-split situations, aiming at decreasing the iterations of the following clustering. Experiment is conducted on both TIMIT and RASC863 speech database, which shows that the proposed algorithm provides a reduction of 18%~45% in designing codebook in size of 64~2048 with almost equal VQ performance, compared with the universal codebook generation algorithm.

목차

Abstract
 1. Introduction
 2. Complexity Analysis
 3. Adaptive Orthogonal M-Split Method
  3.1. Codebook Generation Scheme
  3.2. Adaptive Orthogonal M-Split Method
  3.3. Adaptive Split Coefficient Vector
 4. Adaptive Orthogonal M-Split LBG Algorithm
 5. Results and Analysis
 6. Conclusion
 Acknowledgments
 References

키워드

저자

• Weijun He [ School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China ]
• Qianhua He [ School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China ]
• Jichen Yang [ School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Signal Processing, Image Processing and Pattern Recognition

• 간기

  격월간

• pISSN

  2005-4254

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605