METHOD AND APPARATUS FOR SIGNAL PROCESSING AND ENCODING AND DECODING METHOD, AND APPARATUS THEREFOR

摘要

A signal processing method, an apparatus therefor, an encoding and decoding method, and an apparatus therefor are provided to optimize the transmission efficiency of control data used in the recovery of audio. A bitstream demultiplexing part(60) acquires index information. An entropy decoding part(70) performs the entropy decoding of the index information. The first to the third data decoding parts(80,91,92) identify contents corresponding to the entropy-decoded index information. The index information is information about indexes having a probability use frequency characteristic.