7. The speech recognition system of claim 6 , wherein the syllable determiner includes: a vowel/consonant detector detecting a vowel and a consonant from the speech signal; a combination calculator calculating a number of combinations of the vowel and the consonant; and a comparator comparing the number of combinations to a predetermined number.
7. The speech recognition system of claim 6 , wherein the syllable determiner includes: a vowel/consonant detector detecting a vowel and a consonant from the speech signal; a combination calculator calculating a number of combinations of the vowel and the consonant; and a comparator comparing the number of combinations to a predetermined number. 8. The speech recognition system of claim 7 , wherein the vowel/consonant detector detects the vowel and the consonant using at least one of an energy of the speech signal, a zero crossing rate of the speech signal, an auto-correlation function of the speech signal, a fundamental frequency of the speech signal, and a spectral tilt of the speech signal.