5. The speech recognition processor of claim 4, wherein said conversion rule generator includes an input speaker codebook generator for generating in advance a mapping function highlighting variations between previously stored specific speaker information and the pre-registered non-specific speaker information, wherein said conversion rule memory includes a speaker codebook coupled to said input speaker codebook generator to retain the generated mapping function, and wherein said feature converter includes a vector quantization unit in communication with said speaker codebook to generate the converted voice feature parameters based on the retained mapping function.
6. The speech recognition device of claim 5, wherein said input speaker codebook generator and said speaker codebook are housed in a removable cartridge in releasable communication with said data processing terminal.