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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 저널정보
- 대한전자공학회 ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications ITC-CSCC : 2008
- 발행연도
- 2008.7
- 수록면
- 1,457 - 1,460 (4page)
이용수
초록· 키워드
오류제보하기
The SBC (subband coding) using the multirate filter bank was proposed in 1980, this coding method splits full audio spectrum into subbands, and assigns more bits to each subband with higher energy. If the power spectral density (PSD) of any subbands is approximately zero, then those subbands need not be assigned any bits at all. While reconstruction, the subband signals are synthesized to the original signal. The most important advantage of SBC is data reduction. The multirate filter bank (MFB) must obtain requirement of perfect reconstruction and requirement of maximal decimation. This paper proposed two new methods to find out sets of decimation ratios, and an optimal set is chosen for designing MFB, satisfying above requirements. Because the optimal set is suitable with PSD distribution of signal, the achieved result does not help only to decrease data rate but also to reduce total error on the reconstructed output signal. An example where an audio signal is the input signal is included.
목차
Abstract
1. Introduction
2. The subband coding with the set [6, 3, 2]
3. Conclusions
References
참고문헌 (0)
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