REDUCED COMPUTATIONAL COMPLEXITY OF BIT ALLOCATION FOR PERCEPTUAL CODING

摘要

A process that allocates bits for quantizing spectral components in a perceptual coding system is performed more efficiently by obtaining an accurate estimate of the optimal value for one or more coding parameters tha t are used in the bit allocation process. In one implementation for a perceptu al audio coding system, an accurate estimate of an offset from a calculated psychoacoustic masking curve is derived by selecting an initial value for th e offset were used for coding, and estimating the optimum value of the offset from a difference between this calculated number and the number of bits that are actually available for allocation.