標題: Efficient bit allocation algorithm for MPEG-4 advanced audio coding
作者: Yang, Cheng-Han
Hang, Hsueh-Ming
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 2006
摘要: In this paper, a new bit allocation algorithm, called EBFOS (Enhanced BFOS), is proposed for the MTEG4 Advanced Audio Coding (AAC) scheme. The notion of "bit-use efficiency" is suggested and the basic idea behind our approach is "give bits to the band with the maximum NMR gain per bit" or "retrieve bits from the band with the maximum bits per NMR loss", which is similar to the basic concept of the generalized BFOS (Breiman, Friedman, Olshen, and Stone) algorithm. However, the inter-band dependency of coding process in AAC is also taken into consideration in our approach. Simulation results show that the performance of the EBFOS scheme is significantly better than that of the MPEG-4 AAC Verification Model and is close to that of the trellis-based scheme, which achieves the minimum of a predefined NMR cost function. Also proposed in this paper is a fast version of our algorithm to reduce its computational complexity.
URI: http://hdl.handle.net/11536/17434
http://dx.doi.org/10.1109/ACSSC.2006.355142
ISBN: 978-1-4244-0784-2
ISSN: 1058-6393
DOI: 10.1109/ACSSC.2006.355142
期刊: 2006 Fortieth Asilomar Conference on Signals, Systems and Computers, Vols 1-5
起始頁: 2119
結束頁: 2124
Appears in Collections:Conferences Paper


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