Scattering Coefficient Open Database

Research areas Acoustic Measuring Techniques / Room Acoustics

The scattering coefficient suitably describes diffuse reflections of the sound field and it is defined as the ratio of the non-specularly reflected sound energy to the totally reflected energy. It can be measured according to the ISO 17497-1.
Scattering coefficients for some surfaces have been given by Vorländer [in "Auralization", pp.311-317].

This project aims to collect and share random-incidence scattering coefficients, mainly as measured in the scale model reverberation chamber at the Institute of Technical Acoustics in Aachen.
Data are intended for reaserchers and acoustic consultants involved in room acoustics simulations. Detailed information about theory and measurements techniques may be found here.
The Database is an ongoing and open project: external contributions are welcome!


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- Chairs [Grid]



f [Hz]
200
250
320
400
500
640
800
1000
1250
1600
2000
2500
3200
4000
5000
s 0.19
0.2
0.2
0.19
0.22
0.31
0.34
0.38
0.44
0.46
0.5
0.65
0.52
0.41
0.49

- Chairs [in pairs]



f [Hz]
200
250
320
400
500
640
800
1000
1250
1600
2000
2500
3200
4000
5000
s 0.22
0.23
0.28
0.28
0.24
0.38
0.41
0.44
0.49
0.5
0.55
0.66
0.41
0.53
0.59

- Tables



f [Hz]
200
250
320
400
500
640
800
1000
1250
1600
2000
2500
3200
4000
5000
s 0.28
0.35
0.33
0.32
0.33
0.42
0.48
0.52
0.61
0.57
0.5
0.7
0.63
0.61
0.55

- Tables and Chairs



f [Hz]
200
250
320
400
500
640
800
1000
1250
1600
2000
2500
3200
4000
5000
s 0.28
0.38
0.36
0.35
0.36
0.44
0.5
0.51
0.63
0.7
0.69
0.77
0.77
0.69
0.8






© ITA, Created 14.10.2009 by Last update: 07.12.2009.
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