Compression and decompression of audio files using a chaotic system

Compression and the defrosting system of an audio file section are supplied. The library of a fundamental wave form (20) is manufactured by applying the selected digital initialization code to a chaos system. Each fundamental wave form corresponds to the initialization code by 1 to 1. The audio file section S (24) is approximated using the selected load sum total of a fundamental wave form. Next, a fundamental wave form is discarded and the audio file (27) into which only the load factor and the corresponding initialization code were compressed memorizes. When thawed for reproduction of the compressed audio file, the memorized initialization code is applied to the chaos system which stripping was carried out and was similar, and reproduces a fundamental wave form, It recombines according to the load factor memorized in order to reproduce an original audio file section.