The Uncertainty of the Proposed Single Number Ratings for Airborne Sound Insulation

2012 ◽  
Vol 19 (3) ◽  
pp. 145-172 ◽  
Author(s):  
Jeffrey Mahn ◽  
John Pearse
Keyword(s):  
Sound Insulation ◽  
Airborne Sound ◽  
Single Number

scholarly journals IMPLEMENTATION OF LABORATORY MEASUREMENT OF AIRBORNE SOUND INSULATION BASED ON ISO AND ASTM STANDARDS IN NATIONAL STANDARDIZATION AGENCY OF INDONESIA (BSN)

2021 ◽  
Vol 23 (1) ◽  
pp. 77
Author(s):  
Bondan Dwisetyo ◽  
Maharani Ratna Palupi ◽  
Fajar Budi Utomo ◽  
Chery Chaen Putri ◽  
Dodi Rusjadi ◽  
...  
Keyword(s):  
Transmission Loss ◽  
Laboratory Measurement ◽  
Sound Insulation ◽  
Reference Curve ◽  
Airborne Sound ◽  
Significant Difference ◽  
Single Number ◽  
Sound Reduction ◽  
Reduction Index

<p>The implementation of laboratory measurement of airborne sound insulation based on ISO and ASTM standards was carried out at SNSU BSN. The aim of this work to realize the measurement of airborne sound insulation for several sample tests, where the procedure of the test is performed according to the updated standard ISO 10140 and ASTM E90. Besides, the single number rating also is determined based on ISO 717-1 and ASTM E413. This measurement has been conducted in the two reverberation rooms using pressure method consist of measuring the sound pressure level, measuring the reverberation time, obtaining the sound reduction index (R) or sound transmission loss (STL), and determination of a single-number ratings of the samples test. From the results, some parameter requirements such as the frequency range and the rounding procedure of R or STL influence the measurement result slightly. Subsequently, the significant difference is obtained for the determination of single number rating in the shifting procedure of the reference curve.</p>

A Comparative Study of Sound Transmission Loss Provided by Glass, Acrylic and Polycarbonate

2013 ◽  
Vol 60 (1) ◽  
Author(s):  
Elwaleed Awad Khidir ◽  
Zambri Harun ◽  
Mohd Jailani Mohd Nor ◽  
Muhamad Razi
Keyword(s):  
Transmission Loss ◽  
Sound Transmission ◽  
Sound Insulation ◽  
Sound Transmission Loss ◽  
Material Density ◽  
Airborne Sound ◽  
Single Number ◽  
Reverberation Chambers ◽  
Sound Reduction ◽  
Reduction Index

This article presents an assessment for the airborne sound insulation provided by single glazed panels. The glazed panels were glass, acrylic and polycarbonate with a thickness of 4 mm. The experiments were conducted in a transmission loss facility consisting of semi anechoic and reverberation chambers. The panels were subjected to airborne sound and the data collected. Glass, acrylic and polycarbonate panel absorb noise most effectively above 500 Hz with the absorption peaks at 1000 Hz. The single number sound reduction index (RW) for glass, polycarbonate and acrylic were 41 dB, 38 dB and 37 dB, respectively. This could be attributed mainly to the material density which is higher for the glass. Keywords: Sound transmission loss; glazing; insulation; weighted index

Reproducibility of the Present and the Proposed Single-Number Quantities of Airborne Sound Insulation

2012 ◽  
Vol 98 (5) ◽  
pp. 811-819 ◽  
Author(s):  
Valtteri Hongisto ◽  
Jukka Keränen ◽  
Mikko Kylliäinen ◽  
Jeffrey Mahn
Keyword(s):  
Sound Insulation ◽  
Airborne Sound ◽  
Single Number

scholarly journals Assessment of the airborne sound insulation from mobility vibration measurements; a hybrid experimental numerical approach

2018 ◽  
Vol 432 ◽  
pp. 680-698 ◽  
Author(s):  
N.B. Roozen ◽  
Q. Leclère ◽  
D. Urbán ◽  
T. Méndez Echenagucia ◽  
P. Block ◽  
...  
Keyword(s):  
Numerical Approach ◽  
Sound Insulation ◽  
Vibration Measurements ◽  
Airborne Sound
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