| Title |
Acoustical Features of Myoungryun-dang at the Hyang-Gyos in Chungbuk Province |
| Authors |
Seong Myeong-Je ; Haan Chan-Hoon |
| Keywords |
Hyang-gyo ; Myoungryun-dang ; Classroom ; Room Acoustics ; Acoustic Experiment ; Reverberation Time ; Sound Clarity |
| Abstract |
The present study aims to investigate the styles of traditional classrooms and to discover the acoustic characteristics of the classroom. Acoustic experiments were undertaken at the Myoungryun-dang at the Hyang-gyos in chungbuk province, which have typical style of the traditional classroom of Korea. The background noise level is about 36.1dB(A) that is suitable for educational spaces. It is due to lots of noise is coming from the outside. Several acoustic parameters were measured at 6 ~ 12 points including sound pressure level(SPL), reverberation time(RT), definition(D50) and speech intelligibility(RASTI). It was found that SPL is reducing rapidly in proportion with the distance away from the sound source. The average value of RT is 0.61 second when classroom was empty which means the appropriate condition for speech. The average D50 value is 67% that is regarded as suitable condition. The average RASTI is 0.72 which is a value of satisfactory level. The result shows that Myoungryun-dang has good acoustic conditions with short reverberation time and high clarity in spite of the noises. |