| 摘要 |
PROBLEM TO BE SOLVED: To achieve data structure of a voice signal in which voice data having the number of elements being more than the number of channels are housed and reproduction can be performed. SOLUTION: In the data structure, main voice data of resolution 14 bits in a sampling frequency 44.1 kHz and sub-voice data of 8 bits in a sampling frequency 11.025 kHz are multiplexed. The sub-voice data are divided into four data each of which has 2 bits, stored at the lower order bit side of the four 14 bits main voice data being continued respectively, and is made data structure of 16 bits. By multiplexing two elements voice data of the main-voice/sub-voice and storing them in one channel voice data, four elements voice data of left voice data of the main voice, right voice data of the main voice, left voice data of sub-voice, and right voice data of the sub-voice can be stored by two channel voice data, and the main-voice/sub-voice can be made a stereo form. COPYRIGHT: (C)2008,JPO&INPIT
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