Sound
Transmission Loss Measurement隔音性能測試
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Complied
with 試驗方法及宣告標準
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Sound
Reduction Test according
to ISO 140-3, ISO 717-1
(Rw)
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Sound
Reduction Test for road traffic noise reducing devices, road barrier
according to BS EN 1793-2 & 1793-3 (DLR)
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Sound
Transmission Loss Test according
to ASTM E90, ASTM E413 (STC)
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Outdoor-Indoor
Transmission Class Measurement according
to ASTM E90, ASTM E1332 (OITC)
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根據國家標準
GB/T 19889.3 及
GB/T 50121試驗所得的建築構件空氣聲隔聲量
(Rw)
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Laboratory
facility
實驗室設施
Fo Tan Branch 火炭實驗室 (HOKLAS Accredited香港認可處所認可之實驗室)
Location:
地點:
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About
10-minute's walk from Fo Tan MTR station
由火炭港鐵站步行約10分鐘
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Room
volume:
測試房容積:
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Source
Room 聲源室
= 88m3
Receiving
Room 接收室
= 206m3
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Test
Opening:
測試件安裝洞口尺寸:
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3450mm
(H) X 3000mm (W)
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Test
standard:
試驗方法:
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ISO
140-3 (Rw, DLR)
ASTM
E90 (STC, OITC)
GB/T
19889.3 (Rw)
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Instrument
測量設備
To
ensure the highest accuracy and precision of our measurement, our
equipment is complied with the requirements of accuracy classes 0 or 1
defined in IEC 651 and IEC 804.
聲壓級測量設備的準確度滿足IEC
651 和
IEC 804中規定的0型或1型准確度要求。
Equipment
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Fulfilled
International Standard
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Real-
Time Frequency Analyzer
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Yes
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Free-
field Microphone
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Yes
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Microphone
Preamplifier
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Yes
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Sound
Level Calibrator
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Yes
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OmniPower
Sound Source
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Yes
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Test
Arrangement 測試安排
Sound
Reduction Index (R)
/ Sound Transmission Loss
(TL) is given by:
隔音量計算方法如下:
R
or TL = L1 – L2 + 10 log (S/A)
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The
Sound Reduction Index (R)
/ Sound Transmission Loss
(TL) of the
specimen is measured in a laboratory by placing the element in an
opening between two adjacent reverberant rooms designed for such
tests.
Noise
is introduced into one of the rooms, referred to as the source
room, and part of the sound energy is transmitted through the test
element into the second room, referred to as the receiving room.
The
resulting mean space-average sound pressure levels between 100 Hz
to 5000 Hz in one third octave band in the source
and receiving rooms
are measured.
Reverberation
time inside the receiving room is also measured for room
absorption correction.
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測試件安裝在聲源室與接收室之間的洞口內,
聲音經由測試件進入接收室內。
傳聲器分別於兩間房中進行收音,
測試件的隔音性能是聲源室與接收室的分貝之差數。
量度接收室的混響時間作為吸音量的修正用途。
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Standard
試驗方法
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A
single number descriptor 宣告標準
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ISO
140-3, ISO 717-1
GB/T
19889.3 , GB/T 50121
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Weighted
Sound Reduction Index (Rw)
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ISO
140-3, BS EN 1793-2 & 1793
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Single-number
rating of airborne sound insulation normalized to traffic noise
spectrum (DLR)
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ASTM
E90, ASTM E413
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Sound
Transmission Class (STC)
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ASTM
E90, ASTM E1332
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Outdoor-Indoor
Transmission Class (OITC)
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Certify
Your Buildings Specimen 為產品認證
Once
finished laboratory measurement, a detail report of the measurement, and a
Certification that certified the Weighted Sound Reduction Index (RW
/ DLR), Sound Transmission Class (STC) or
Outdoor-Indoor Transmission Class (OITC) the of the tested
buildings specimen will be issued. People can refer to this Certification
to consult the acoustics performance of your building products. No more
estimation, true data is here.
所有的測試件於完成測試後,
均會發出一份具有公信力的測試報告以表示其隔音性能,客戶可以更了解產品的特性。
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Testing
of Acoustics Door
隔音門測試
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Testing
of Acoustics Barrier
隔音屏障測試
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Testing
of Glazing Partition
玻璃屏風測試
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Testing
of Metal Roof System
金屬天花組合測試
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Testing
of Louver
隔音百葉測試
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Testing
of Curtain wall – Mullion
幕牆鋁料測試
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Testing
of Glazing Partition
玻璃屏風測試
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Testing
of Windows
隔音窗測試
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Testing
of
Raise Floor System
升降地台板組合測試
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