Phonetic variation model building apparatus and method and phonetic recognition system and method thereof

A phonetic variation model building apparatus, comprising:

• a phoneme database for recording at least a standard phonetic model of a language and a plurality of non-standardized phonemes of the language;
• a phonetic variation identifier, coupled to the phoneme database, for identifying a plurality of phonetic variations between the non-standardized phonemes and the standard phonetic model;
• a phonetic transformation calculator comprising circuitry, coupled to the phonetic variation identifier, for calculating a plurality of coefficients of a phonetic transformation function based on the phonetic variations and the phonetic transformation function;
• and
• a phonetic variation model generator, coupled to the phonetic transformation calculator, for generating at least a phonetic variation model based on the at least a standard phonetic model, the phonetic transformation function and the coefficients thereof.