후기음부의 도래방향이 LEV에 미치는 영향

최영지,후지모토카츠토시 대한건축학회 1999 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.19 No.2

This paper reports the results of subjective to clarify the effect of angular distribution of the late arriving sound on listener envelopment(LEV) in concert halls. Two subjective experiments, using sound fields simulated in an anechoic room, were conducted. The first experiment was intended to examine whether LEV is only influenced by the relative level of late lateral energy(LG^∞_(80))or not, while LG was kept constant. The second experiment was an investigation of the effects on LEV, varied the late arriving sound level which direction of arrival were lateral, front, vertical, rear. The results indicated that LEV is affected by other direction late arriving energy, with constant LG and there are significant effect on perceived LEV, varying late arriving sound level and direction of arrival.

끊임없이 노력하고 끈질기게 취재하라

최영지,최서영 (사)방송기자연합회 2012 방송기자 Vol.7 No.-

시드니대학교 건축학대학 건축음향연구실 소개

최영지 한국소음진동공학회 2007 소음 진동 Vol.17 No.6

1차 단순 확산체를 적용한 교실음향설계

최영지,Choi, Young-Ji 한국교육시설학회 2011 敎育施設 Vol.18 No.5

In this study, the effect of treating 1-dimensional diffusers on the classroom acoustics was investigated to determine if the diffuser are beneficial for performing the preferred acoustical conditions for speech. A 1/10 scale model of a classroom was used to measure the acoustical parameters, T30, $C_{50}$, STI and SNR in that room. The room acoustical conditions were varied by treating diffusers either on the front or side walls of the classroom. When the diffusers were treated on the side walls around the student's areas, a shorter reverberation time at low frequencies was obtained and resulted in performing uniform reverberation times across the frequency bands. The $C_{50}$ values at mid- and high-frequencies were increased by treating the diffusers either on front or side wall surfaces. The highest STI and SNR values were obtained when the diffuser was treated on the front wall around the teacher's areas. It is found that diffusers are beneficial to increase the intelligibility of speech for the rear seats of the rooms.

축소모형법을 이용한 흡음재와 확산체 배치조건별 교실의 음향성능 측정 및 평가

최영지,Choi, Young-Ji 한국교육시설학회 2013 敎育施設 Vol.20 No.1

The present study examines the effects of periodic type diffusers for producing the preferred acoustics for speech and determines the more successful configurations of sound-absorbing and diffusing treatments for achieving good acoustics in classrooms. The measurements were carried out in a 1/10 scale model classroom systematically adding diffusers to one or more of four surfaces of the room. A total of 13 combination of diffusers with absorptive treatments were investigated. Adding diffusers on the ceiling were more effective to increasing the early-arriving reflection energy($G_{50}$) than adding absorptive materials on the entire ceiling. The late arriving reflection energy($G_{late}$) was decreased with increasing amounts of diffusing treatments of upper front or rear wall and this resulted in achieving higher early-to-late ratios($G_{50}$). Adding diffusers on the upper front wall($AC_{100}DUFW_{26}$) achieved more uniform acoustical conditions over the receiver positions than adding diffusers on the upper rear wall($AC_{100}DUFW_{26}$). Adding diffusers on the ceiling and absorptive materials on the lower front wall($AC_{75}DC_{25}ALFW_{26}$) achieved better acoustical conditions than adding the absorptive materials on the entire ceiling and lower front wall($AC_{100}ALFW_{26}$).

신나고 재미있게 일할 수 있도록 돕겠습니다

최영지,최서영 (사)방송기자연합회 2011 방송기자 Vol.6 No.-

의자 흡음특성에 영향을 미치는 인자에 관한 실험적 연구

최영지,구재오,Choi, Young-Ji,Koo, JaeOh 한국음향학회 2015 韓國音響學會誌 Vol.34 No.4

본 논문은 공연장에서 의자 설치 조건의 변화가 의자의 흡음특성에 미치는 영향에 관하여 실험적인 연구를 실시하였다. 실제 공연장 의자의 흡음특성을 재현한 1/10 스케일의 축소 의자와 인체모형을 이용하여 실험을 진행하였다. 실험변수로는 의자의 흡음정도, 의자 열 간격의 변화, 청중의 착석유무, 그리고 바닥의 카펫설치 유무로 제한하였다. 열 간격에 따른 청중의 착석 및 바닥의 카펫설치 유무의 영향을 평균적으로 분석하였을 때 의자의 흡음률이 낮을수록 즉, 카펫 혹은 청중 등의 부가적인 흡음력이 없을 때, 열 간격에 의한 흡음률 변화폭이 작게 나타났다. 의자 열 간격 평균 주파수 대역별 흡음률 증가 값에 따르면 주변 인자에 의한 흡음률의 변화는 주파수대역별로 다르게 나타났다. This paper examines the combinations of factors influencing the absorption characteristics of theatre chairs. One-tenth scale model chairs and listeners that closely approximated the absorption characteristics of full scale theatre chairs were used to measure the interactive effects of the test variables on the chairs absorption characteristics. The test variables were the type of chairs, the row spacing, as well as the presence of people and carpet. The variations of absorption increments with varied row spacing tended to be smallest when the chairs were less absorptive, i.e. with less carpet or occupants. The incremental effects of adding occupants or carpet averaged over three row spacings varied over frequency.

대학생의 건강 실태 조사

최영지 이화여자대학교 체육대학 1973 梨花體育學會誌 Vol.- No.6

'동의수세보원 갑오구본'과 '동의수세보원 신축본'의 태음인 몽설병 치방 비교·분석 연구

최영지,이준희 사상체질의학회 2019 사상체질의학회지 Vol.31 No.3

Objective This study was aimed to research how the recognition of Taeeumin's Mongsul disease was changed from the Gabo edition to the Sinchuk edition of Donguisusebowon, and to present reasonable explanation to the prescription suggested in the Sinchuk edition. Method The original text about Taeeumin Mongsul disease and corresponding prescription in Donguisusebowon Sinchuk edition written in 1901 and Donguisusebowon Gabo edition written in 1894 were compared and analyzed. Furthermore, the literature and articles which are relevant to the prescription and the difference of pathology between the Gabo edition and the Sinchuk edition of Donguisusebowon were searched. Results & Conclusion Sinchuk editon compared to Gabo edition differentiates prescriptions according to the condition of stool, which means that Mongsul disease can occur both in Lung-dryness of Esophagus-Cold pathology and that of Liver-Heat pathology. The prescriptions presented in Sinchuk edition are more specified and in agreement with pathology newly proposed in Sinchuk edition than the prescriptions in Gabo edition. Although Cheongsimyeonja-tang is not mentioned on the original text about Taeeumin Mongsul disease in Sinchuk edition, it can be prescribed for the disease with Lung-dryness of Liver-Heat pathology as Yuldahanso-tang can be. However, Yuldahanso-tang focuses more on Liver-Heat symptoms, while Cheongsimyeonja-tang focuses more on Lung-dryness.

콘서트 홀에서 선호되는 음향특성에 관한 연구

최영지,Choi Young-Ji 한국음향학회 2005 韓國音響學會誌 Vol.24 No.2

본 연구는 주관적 음향평가를 통하여 콘서트 홀에서 선호되는 음향특성과 중요한 음향지표 조사에 그 목적이 있다. 호주의 두 콘서트 홀 (이하 Hall A와 Hall B로 가칭함)에서 더미헤드 (Dummy Head)로 녹음된 음악을 이용하여 음향평가를 위한 청감실험을 통해 실시하였다. 평가된 두 콘서트 홀의 음향선호도는 측정된 음향지표와의 상관도를 분석하여 실제 홀에서의 음향평가에 기여하는 음향지표를 조사하였다. 청감실험에서 피험자들은 Hall B가 Hall A에 비해 음향적으로 우수하다는 결과를 보여주었으며, Hall A의 낮은 음향선호도는 전문음악가와의 인터뷰조사결과와 유사하였다. 두 콘서트 홀의 음향평가에 가장 중요한 음향지표는 음압레벨로 밝혀졌다. This study deals with a subjective assessment to investigate the preferred acoustic conditions and determine the important acoustical parameters in concert halls. A subjective test was carried out using dummy head recorded sounds made in actual halls in Australia (referred to as Hall A and Hall B) to evaluate the acoustic performance of two halls. The results of subjective tests were then correlated with measured acoustical parameters to investigate the significant determinants for the preference judgements. The listeners show a stronger Preference for seats in the Hall B than those in the Hall A. The low preferences for seats in the Hall A are in agreement with live performance ratings assessed by musicians. It is found that the sound level is the most significant acoustical parameter for evaluating the overall acoustic preference in the two halls.