System zur Kodierung und Dekodierung von Audiosignalen

An encoding system is disclosed, that comprises an input terminal (1) for receiving an input signal, a signal converting portion (2) for converting the input signal into frequency-domain signals and grouping several frequency-domain signals into blocks, an analyzing portion (3) for analyzing the input signal and the frequency-domain signals and obtaining an allowable error, a selecting portion (4) for selecting one of a plurality of quantizing portions (50-53) that quantizes frequency-domain signals of each block corresponding to the allowable error, a plurality of quantizing portions for quantizing frequency-domain signals corresponding to selection information and calculating amplitude information and codes, a multiplexing portion (6) for multiplexing the amplitude information, codes, and selection information, and an output terminal (7) for outputting the multiplexed signal.