An Adaptive And Efficient Bit Allocation Scheme For MPEG-4 Advanced Audio Coding

作者：Shu Ruo^*; Wu Lenan

来源：International Conference on Industrial and Information Systems, China,Hainan,Haikou, 2009-04-24 to 2009-04-25.

DOI：10.1109/IIS.2009.66

• perceptual audio coding
• quantization module
• BFOS algorithm
• bit-use efficiency
• quantization step size

In this paper, a new bit allocation scheme is proposed for MPEG4 Advanced Audio Coding. Developed from the generalized BFOS (Breiman, Friedman, Olshen, and Stone) algorithm, the new approach considers adaptive adjustment of quantization step size also, except bit-use efficiency. The basic idea behind our scheme is that every modification of scale factor for each band is determined by the "bit rate distance". Simulation results show that the performance of this scheme is significantly better than that of the MPEG4 AAC Verification Model and the computational complexity is highly reduced compared to BFOS algorithm.

• 出版日期2009
• 单位东南大学