Sound Transmission Loss Measurement隔音性能測試

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 GB/T 50121試驗所得的建築構件空氣聲隔聲量 (Rw)

 

 

     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:

About 10-minute's walk from Fo Tan MTR station

由火炭港鐵站步行約10分鐘

 

Room volume:

測試房容積:

Source Room 聲源室 = 88m3

Receiving Room 接收室 = 206m3

Test Opening:

測試件安裝洞口尺寸:

3450mm (H) X 3000mm (W)

Test standard:

試驗方法:

ISO 140-3 (Rw, DLR)

ASTM E90 (STC, OITC)

GB/T 19889.3 (Rw)

     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 IEC 804中規定的0型或1型准確度要求。  

Equipment

Fulfilled International Standard

Real- Time Frequency Analyzer

Yes

Free- field Microphone

Yes

Microphone Preamplifier

Yes

Sound Level Calibrator

Yes

OmniPower Sound Source

Yes

     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)

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.

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。

 

Standard 試驗方法

A single number descriptor 宣告標準

ISO 140-3, ISO 717-1

GB/T 19889.3 , GB/T 50121

Weighted Sound Reduction Index (Rw)

ISO 140-3, BS EN 1793-2 & 1793

Single-number rating of airborne sound insulation normalized to traffic noise spectrum (DLR)

ASTM E90, ASTM E413

Sound Transmission Class (STC)

ASTM E90, ASTM E1332

Outdoor-Indoor Transmission Class (OITC)

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。

 

click for large image

Testing of Acoustics Door

隔音門測試

Testing of Acoustics Barrier

隔音屏障測試

Testing of Glazing Partition

玻璃屏風測試

Testing of Metal Roof System

金屬天花組合測試

Testing of Louver

隔音百葉測試

Testing of Curtain wall Mullion

幕牆鋁料測試

Testing of Glazing Partition

玻璃屏風測試

Testing of Windows

隔音測試

Testing of Raise Floor System

升降地台板組合測試