한국음향학회:학술대회논문집 (Proceedings of the Acoustical Society of Korea Conference)
- 한국음향학회 2000년도 하계학술발표대회 논문집 제19권 1호
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- Pages.137-140
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- 2000
가중치 가변에 의한 코드북 성능 개선
Improving performance of the codebook by a variable weight
- Kim HyungCheol (Dept. of Electrical & Electronic Eng., Dongshin Univ.) ;
- Cho CheHwang (Dept. of Electrical & Electronic Eng., Dongshin Univ.)
- 발행 : 2000.07.07
초록
We provide an useful method to design codebooks with better performance than conventional methods. In the proposed method, new codevectors obtained by learning iterations are not the centroid vectors which is the representatives of partitions, but the vectors manipulated by the distance between new codevectors and old codevectors in the early stages of learning iteration. Experimental results show that the codevectors in the obtained by the proposed method converge to a better locally optimal codebook.
키워드