In the present study, improving acoustical characteristics of a Gothic cathedral （Myeong-dong Cathedral, which is the first built Western Gothic-style architecture in Korea） using simple public address system were i...In the present study, improving acoustical characteristics of a Gothic cathedral （Myeong-dong Cathedral, which is the first built Western Gothic-style architecture in Korea） using simple public address system were investigated. Acoustical measurements were conducted at 11 selected points inside the cathedral and seven acoustical parameters were calculated： sound pressure level （SPL）： 64.6 dBA （the measurement value with regard to the omni-directional speaker sound source）; 74.5 dBA （the measurement value with regard to the public address speaker sound source）, early decay time （EDT）： 4.04 s; 3.76 s, reverberation time （RT6o）： 3.58 s; 3.89 s, clarity （Cso）： -6.2 dB; -2.8 dB, definition （D50）： 18%; 29%, initial time delay gap （ITDG）： 47 ms; 23 ms, and rapid speech transmission index （RASTI）： 32%; 42%. Parameters showed that the acoustical characteristics of a typical Gothic cathedral include rich reverberation and diffusive sound fields. Meanwhile, there was improved speech intelligibility when using simple public address system. Based on subjective evaluation, there was overall satisfaction with voice and music recognition and the highest satisfaction with clarity with respect to voice recognition and with reverberation with respect to music recognition. This is a good solution of optimized acoustic environment through harmony between natural reverberation and reinforced clarity using simple public address system.展开更多
一、两本书
1997年，论文《大教堂与集市（The Cathedral and the Bazaar）》成为一篇挑战教义神权的战斗檄文。从那之后，开源与闭源的战火就从未熄灭过。那些日子里，一些教堂里的圣人也偶尔地裹了头帕，装成市贩的样子到集市中去探...一、两本书
1997年，论文《大教堂与集市（The Cathedral and the Bazaar）》成为一篇挑战教义神权的战斗檄文。从那之后，开源与闭源的战火就从未熄灭过。那些日子里，一些教堂里的圣人也偶尔地裹了头帕，装成市贩的样子到集市中去探探行情；一些小贩们也变成了信众，走进教堂在胸口画下十字。展开更多
文摘In the present study, improving acoustical characteristics of a Gothic cathedral （Myeong-dong Cathedral, which is the first built Western Gothic-style architecture in Korea） using simple public address system were investigated. Acoustical measurements were conducted at 11 selected points inside the cathedral and seven acoustical parameters were calculated： sound pressure level （SPL）： 64.6 dBA （the measurement value with regard to the omni-directional speaker sound source）; 74.5 dBA （the measurement value with regard to the public address speaker sound source）, early decay time （EDT）： 4.04 s; 3.76 s, reverberation time （RT6o）： 3.58 s; 3.89 s, clarity （Cso）： -6.2 dB; -2.8 dB, definition （D50）： 18%; 29%, initial time delay gap （ITDG）： 47 ms; 23 ms, and rapid speech transmission index （RASTI）： 32%; 42%. Parameters showed that the acoustical characteristics of a typical Gothic cathedral include rich reverberation and diffusive sound fields. Meanwhile, there was improved speech intelligibility when using simple public address system. Based on subjective evaluation, there was overall satisfaction with voice and music recognition and the highest satisfaction with clarity with respect to voice recognition and with reverberation with respect to music recognition. This is a good solution of optimized acoustic environment through harmony between natural reverberation and reinforced clarity using simple public address system.
文摘一、两本书
1997年，论文《大教堂与集市（The Cathedral and the Bazaar）》成为一篇挑战教义神权的战斗檄文。从那之后，开源与闭源的战火就从未熄灭过。那些日子里，一些教堂里的圣人也偶尔地裹了头帕，装成市贩的样子到集市中去探探行情；一些小贩们也变成了信众，走进教堂在胸口画下十字。
