MUSICAL PERFORMANCE INFORMATION COMPRESSION DEVICE, MUSICAL PERFORMANCE INFORMATION DECOMPRESSION DEVICE, MUSICAL PERFORMANCE INFORMATION COMPRESSION PROGRAM PRODUCT, AND MUSICAL PERFORMANCE INFORMATION DECOMPRESSION PROGRAM PRODUCT

摘要

A musical performance information compression device includes a primary code generator (2) and a secondary code generator (3). The primary code generator (2) divides an SMF into at least information on relative time between events, information on sound generation start pitch, information on sound intensity, information on sound generation end pitch, and other information for each of the channels, collects the respective information regardless of the channels, and generates a primary code in which the respective information collected are arranged in independent areas. The secondary code generator (3) compresses the information of the respective areas of the primary code generated by the primary code generator (2) by using decompression method of the LZ encoding method, Huffman encoding method, and the like.