ODEON and scattering.pdf

More documents

Recommendations

Info

Presentation of results f /N (Hz) s α 100 0,05 0,01 125 0,03 0,02 160 0,18 0,10 200 0,17 0,05 250 0,39 0,18 315 0,41 0,25 400 0,43 0,20 500 0,66 0,20 630 0,90 0,21 800 0,95 0,20 1000 0,82 0,21 1250 0,99 0,21 1600 0,88 0,17 2000 0,90 0,20 2500 1,15 0,22 3150 0,92 0,24 4000 0,90 0,25 5000 0,95 0,27 1,2 1 0,8 0,6 0,4 0,2 0 Physical scale rate 1:N = 1:10 Random incidence scattering coefficient 100 200 400 800 1600 3150 Frequency, f/N (Hz)
Measurement results 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -0.1 -0.2 10 3 Frequency [Hz] 10 4 scattering coefficient absorption coefficient The results are shown for three different evaluation ranges of the measured decay curves (T 10 , T 15 , and T 20 ).
Page 1 and 2: ODEON Workshop, Mariehamn, Åland,
Page 3 and 4: Reflection models (asymptotic model
Page 5 and 6: Sound scattering coefficient, s •
Page 7 and 8: Types of diffusers • Geometric di
Page 9 and 10: Irregular geometric structure
Page 11 and 12: Alternating absorbing and reflectin
Page 13 and 14: Measurement of the scattering coeff
Page 15 and 16: Set-up in a scale model for measure
Page 17 and 18: Principle: Three impulse responses
Page 19 and 20: Decay curves Energihenfaldskurver,
Page 21 and 22: Test samples
Page 23 and 24: Absorption of test specimen • Mea
Page 25: Rotation of test specimen • Conti
Page 29 and 30: α s measured for 72 different star
Page 31 and 32: Summary of the ISO-method • The m
Page 33 and 34: Keränen et al. (2003)
Page 35 and 36: Keränen et al. (2003) Scattering C
Page 37 and 38: Keränen et al. (2003) Accuracy of
Page 39 and 40: Example: Sound scattering walls J.Y
Page 42 and 43: Jeon et al. (2003)
Page 44 and 45: Jeon et al. (2003) Max. height: 20

ODEON and scattering.pdf

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?