Transmitter, encoding system and method employing use of a bit allocation unit for subband coding a digital signal

摘要

Transmitter, encoding system and method for subband coding a digital signal. The encoding system includes a splitter unit for dividing the digital signal into subband signals SB1, . . . , SBp; a quantizer unit for quantizing time-equivalent q sample signal blocks of the subband signals; a bit need determining unit and a bit allocation unit. The bit need determining unit determines a bit need bm which corresponds to the number of bits by which the q samples in a time-equivalent signal block in a subband signal SBm should be represented, where 1