OPTICAL DISK, RECORDING METHOD, RECORDER

摘要

PROBLEM TO BE SOLVED: To provide a new system recording medium with which high tone quality is achieved allowing reproduction even in conventional reproducing devices. SOLUTION: An optical disk is formed to the constitution of a plurality of layers in which a recording layer has at least a first and a second layer. The first layer records a first digital audio signal in which a quantized bit sampled by a sampling frequency of 44.1 KHz consists of 16 bits. The second layer records a second digital audio signal having the same program as that of the first digital audio signal in which a quantized bit sampled by 2.8224 MHz consists of 1 bit. COPYRIGHT: (C)2005,JPO&NCIPI