Method and apparatus for subband coding, allocating available frame bits based on changable subband weights

摘要

A method according to the present invention generates weight data for each audio band and assigns a number of bits to each band according to the weight data. The method then calculates a total of the numbers of bits of one block and compares the total with an upper limit and with a lower limit of a compression target value. Based on the comparison result, the method increases or decreases the value of the weight data to update it. The method reassigns a number of bits based on the updated weight data.