A Catholic school is a school that spreads religious ideology to students by combining religious education with regular school curriculum. But, most Catholic schools do not have a separate liturgical space, mass is performed in multipurpose spaces such as auditoriums, and are exposed to severe acoustic defects due to the very aging facilities and lack of sound performance suitable for the liturgical space. So, in this study, an improvement plan was proposed using sound simulation after identifying acoustic defects through field measurements in the liturgical space of Haeseong High School in Jeonju. Also, hearing experiment using Acoustic Psychological Analysis was conducted to identify changes in subjective responses felt by students as they improved their acoustic performance. The results of study, before and after sound performance improvement sound pressure level(SPL500Hz) was 64.8dB at 66.7dB, the weighted sound level(SPLdB(A)) was 67.9dB(A) at 75.8dB(A), reverberation time(RT500Hz) was 2.04sec at 2.52sec, definition(D50,500Hz) was 40.2% at 33.5%, clarity(C80.500Hz) was –0.8dB at –1.18dB, and RASTI was 57.7% at 49.2% was evaluated. In addition, the amount of improvement in subjective responses before and after sound performance through psycho-acoustic experiment decreased by “Reverberation” -17.0%, “Loudness” -11.3% and increased by “Clear” 21.3%, “Vivid” 21.3%, “Intimacy” 12.4%, “Warmth” 14.3%, “Stability” 19.3%, “Godliness” 18.8%. Therefore, after improving sound performance, Haesung High School's liturgical space improved satisfaction with subjective sound performance felt by students and teachers to ensure sound performance suitable for the liturgical space.

Noises in each construction field cause residents in the neighborhood to make complaints due to their high sound pressure level and repetitive, shocking sound. While South Korea regulates construction noises on the basis of legal criteria to minimize the damage from the noises, the regulation only involves a weighted sound level (dB(A)), which is loudness, like other types of noises. It is therefore necessary to make typology of construction noise sources and evaluation vocabularies with the objective of making criteria for regulating construction noises suitable for the South Korean situation. While research based on a survey has been conducted to make typology of construction noise sources and evaluation vocabularies, there have been lots of difficulties in using it to make criteria for regulation because no consideration was given to psychological responses of people. On the basis of the findings from literature review, this study aimed to make typology of construction noise sources and vocabularies through a psycho-acoustic experiment and analyze the psychological characteristics and meanings of construction noises more accurately. The respondents’ psychological responses to construction noise sources were grouped into three factors ‘normal, shocking, and fluctuating noises’ and into ― ― six factors ‘annoying,’ ‘loud,’ ‘confusing,’ ‘noisy,’ ‘alarming,’ and ‘boisterous’ in terms of evaluation ― ― vocabularies. Since the factor with the biggest eigenvalue drawn from the respondents’ psychological responses is most important, the most important influential factor in evaluating construction noises was ‘normal noises’ for construction noise sources and ‘annoyance’ for evaluation vocabularies. This typology is expected to be useful to make and revise criteria for regulating construction noises.