A signal record reproduction device 1 of the invention comprises a microcomputer 12 and a memory 17. A series of data blocks are divided into a plurality of items of element data. The element data is interleaved and stored to the memory 17. A memory incorporated in the microcomputer 12 stores a table and a function expression for deriving address data representing an address to store each element data in memory regions positioned sufficiently apart one another in address space.