| 摘要 |
PROBLEM TO BE SOLVED: To efficiently compress/restore information. SOLUTION: When compressing/restoring a plurality of data signals, a plurality of channels having different channel characteristics are virtually prepared. The plurality of data signals are made to correspond to the plurality of virtual channels so as to compress/restore the plurality of data signals. The plurality of data signals are made to correspond to a plurality of different virtual channels, which are virtually formed, so as to form a plurality of virtual channel signals. The plurality of virtual channel signals are added so as to compress the data signals in at least a number of channels smaller than that of the virtual channels. Formation of the virtual channel signals is executed by preparing a plurality of virtual channel-generating data and by subjecting the plurality of data signals to convolution using each one of different virtual channel-generating data in the plurality of virtual channel generating data. COPYRIGHT: (C)2011,JPO&INPIT |
