High Efficient Algorithm of the Bit Allocation in AC-3 Encoder

In this paperb,ased on the quantitative analysis of the snroffseta,formula which can estimate the relation be-tween the volume of bit allocation and the volume of snroffset was obtained.By employing this formulat,he optimal value of snroffset can be approached effectively.Based on the deductiona,high efficient algorithm of the bit allocation by one rough approaching and the convergence control was proposed.The accuracy and efficiency of bit allocation were measured by the times of iteration and the value of bitleftr,espectively.Experimental results show that the average search times are only about 71.4% of those of the traditional algorithm.This algorithm can greatly enhance both the accuracy and efficiency of the bit allocation in AC-3 encoder.