15. The speech recognition system of claim 14 , wherein the entire search space data formed in an external device is transformed into a binary image suitable for a dynamic loading to be stored in the storage of the pronunciation variation channel unit.
15. The speech recognition system of claim 14 , wherein the entire search space data formed in an external device is transformed into a binary image suitable for a dynamic loading to be stored in the storage of the pronunciation variation channel unit. 16. The speech recognition system of claim 15 , wherein the binary image of the search space data includes a search space data structure for storing the search space data; and a location pointer structure for storing pointers each for pointing a search space data corresponding to a phoneme in the search space data structure.