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Background and Objectives:There can be 3,192 sylables in Korean language but the frequencies of each sylables are variable. This study was aimed to investigate the frequencies of each Korean sylable in the everyday dialogue and to compare the result with the existing Korean phoneticaly balanced (PB) word list, which can provide the basic data for the Materials and Method:Using 33 materials (total 537,245 syllables) colected from TV drama (MBC Best Theater), the author calculated the frequencies of each Korean syllables composed of initial consonant and vowel and compared with existing PB word list by computer program. Results:Each sylable appeared in the diferent frequency pattern. The 138 of 399 syllables represented the 95% of everyday dialogue. Conclusion:This study showed that established PB word list was made relatively well but needs somewhat modification to reflect the actual frequencies of syllable in colloquialism. (Korean J Otolaryngol 2003 ;46 :737-41)