System for simultaneously coding and decoding a plurality of signals

Abstract From the Canadian patent

An encoder comprises first and second quantizers respectively inputted with first and second digital signals for quantizing the same while updating step size in accordance with first and second adapive bit information signals, respectively, an adaptive bit assigning circuit which adaptively assigns bits based on information signals regarding the step sizes of the first and second quantizers for outputting the first and second bit assigning information signals, and a multiplexer which rearranges the outut signals of the first and second quantizers in accordance with the adaptive bit information. A decoder combined with the encoder comprises a demultiplexer for rearranging a received signal …