ODEON and scattering.pdf

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Structural depth of test specimen The structural depth h should be: h ≤ d / 16 where d is the diameter of the turntable
Absorption of test specimen • Measuring accuracy decreases for samples with high absorption • Sound <strong>scattering</strong> surfaces should generally be as reflective as possible • The absorption coefficient should be α s < 0,50
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: Test samples
Page 25 and 26: Rotation of test specimen • Conti
Page 27 and 28: Measurement results 1.2 1.1 1 0.9 0
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

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