| [摘要] |
|
縣市文化中心演藝廳興建使用十年，部分設備必須更新，文獻指出許多廳趟堂因室內裝修 |
| 材料使用不當，導致音響品質不佳，本 |
|
研究以文獻資料搜集國內經常使用之室內裝修吸音材料及實驗室量測，評估分析材料之吸 |
|
音特性，作為歸納建構本土性吸音係數資料表之依據•文獻資料搜集以室內裝修使用之吸 |
| 音兼具防火性能材料為對象。 |
|
文獻資料搜集及實驗室量測，發現吸音材料為達到防火時效，均作噴覆或表面處理，防火 |
|
噴覆選擇適當之噴覆材料能增加吸音係數、以被覆表面處理，被覆材質有微細針孔吸音性 |
|
較佳，材料厚度及背後空氣層厚度，吸音係數隨厚度增加在中低頻吸音域明顯增加，材料 |
|
之密度在低頻吸音域以密度大吸音性較佳，中高頻吸音域以100Kg/m3吸音性較佳。作設計 |
| 參考使用。 |
|
穿孔金屬板以背襯多孔質材料組合使用比單獨使用吸音性佳，以厚度5mm、重量1.72Kg/m2 |
|
地毯在低頻吸音域吸音性極差，選擇單位面積重量大之地毯以改善低頻吸音域吸音性，多 |
|
孔質材料空氣層厚度達臨界值吸音係數已瑞典國家標準評估等級〝A〞，以經濟性考慮應求 |
| 得臨界值作設計參考使用。 |
|
| [摘要] |
| After being used for 10 years
since its construction of performance hall of |
| County & City Cultural Center,
portion of the equipment must be updated. The |
| literature had indicated that
due to improper use of inner decoration & |
| repairing material in many
halls, which had caused bad quality in sound |
| effect. By collecting the sound
absorption material frequently used |
| domestically and the measurement
taken by laboratory shown in the literature, |
| the study has therefore
estimated and analyzed the sound absorption feature of |
| material for the compliance of
summarizing and constructing the local sound |
| absorption coefficient data. The
information collection from literature is |
| aiming at the material for
indoor decoration and modification adjunct with the |
| feature of sound absorption and
fire resistance. |
| The collection of literature
information and the measurement taken in |
| laboratory, both have discovered
that the sound absorption material usually |
| has been proceeded the barrier
spraying or surface treatment in order to reach |
| fire resistance effect. The
barrier spraying for fire resistance has usually |
| selected the proper barrier
material to increase the sound absorption |
| coefficient for its barrier
surface treatment. The better sound barrier |
| material shall have the feature
of sound absorption with fine pin hole, the |
| sound absorption coefficient
will be increase significantly in its middle or |
| low frequency sound absorption
field followed by the thickness of material and |
| the thickness of rear air layer.
If applies the density of material in low |
| frequency sound absorption
field, then the large the density, the better the |
| sound absorption feature. The
better sound absorption feature in middle or |
| high frequency sound absorption
field can adopt 1000Kg/m3 for the reference of |
| design. |
| The sound absorption feature in
combination use of lining porous material of |
| hole through metal plate is
better than its individual use, but the carpet |
| with 5mm thickness and
1.72Kg/m2, the sound absorption effect of which is bad |
| in low frequency field. If
selects the carpet with more weight in its unit |
| area, then it may improve the
sound absorption feature in low frequency field. |
| The thickness of air layer in
porous material has reached the critical value |
| of sound absorption coefficient
and has been evaluated as “A” class by |
| Sweden National Standard, the
acquisition of critical value in consideration |
| of its economy, that can be
provided for the design reference. |