| 摘要 |
PROBLEM TO BE SOLVED: To provide an audio data recording / reproducing system simple in configuration, excellent in operability and high in security, and to provide an audio data recording medium therefor. SOLUTION: Power information correlated with the average sound pressure power of audio data corresponding to a music (music program) is recorded by attaching to the music (music program) and a music data recording medium is constituted. Alternatively, in an encoding part, a power information generation part for receiving digital audio data corresponding to the music (music program) and generating the power information correlated to the average sound pressure power is provided, and the power information is related to data in which the digital audio data are data-compressed and recorded in a recording part. By a decoding part, the power information is extracted and the compressed audio data are restored to the original digital audio data, adjusted on the basis of the power information and outputted, or the restored digital audio data and the power information are outputted. COPYRIGHT: (C)2005,JPO&NCIPI
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