목적: The objective of the study is to analyze subjective and acoustic voice change after septoplasty. 방법:A prospective chart review of patients who conducted a voice recording and survey before and 3 months after septoplasty with or without submucosal turbinectomy. Subjective voice change associated with the surgery is evaluated by a questionnaire. The questionnaire consists of several questions about nasal sounds, voice changes and voice quality. An objective study is performed by voice recordings made before and 3 months after surgery. During each recording session, the subject said m ma the Korean pronunciation of mother and Nu Na the Korean pronunciation of sister. We then analyzed the nasal consonant (m of m ma) and the nasalized vowel sound(a of m ma, a of Nu Na). In an audiology booth, an omni-directional microphone placed 15cm vertically from the subjects lip and a sampling rate of 44kHz is used. Praat(ver. 5.2.16) is used for analyzing formant frequencies and statistical analysis is performed by SPSS software(ver. 18.0, SPSS, Inc., Chicago, IL, USA). 결과:The patients tend to feel that the sound quality is better and nasal sound reduces after surgery in subjective questionnaire. And there are changes in formant frequencies between pre and postoperative voice in the objective study. 결론:Septoplasty affects change of nasal resonance and tends to improve nasal sound and voice quality. Otolaryngologists consider the effect of septoplasty on voice change before they decide to do operation.