Air Absorption Error in Room Acoustical Modeling

R.H.C. Wenmaekers, C.C.J.M. Hak, H.J. Martin, L.C.J. Luxemburg, van

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

2 Citaties (Scopus)
188 Downloads (Pure)

Uittreksel

Most statistical and ray-tracing computer models take into account the absorption of sound by air to estimate the reverberation time. Extensive research by many scientists lead to the standardized calculation model for pure tone air absorption. The phenomenon was discovered from a room acoustical point of view by Sabine, while the further development of the calculation model took place in the fields of physics and environmental noise. As a result, several parameters and units are used for the same phenomenon. However, air absorption is calculated for pure tones, while room acoustics calculations are performed in frequency bands. Most computer models use the centre-frequency of the normalised frequency bands to calculate the air absorption by the pure tone method. Reverberation measurements in frequency bands under laboratory and practical conditions show that errors larger than the Just Noticeable Difference result in calculating the air absorption by this ‘centre-frequency method’. No literature was found that provides an accurate air absorption calculation for frequency bands in relation to the reverberation time without the use of iteration. An existing rule of thumb is validated for application to room acoustics.
Originele taal-2Engels
TitelProceedings of the 155th ASA conference, Paris 2008
Pagina's3129-3134
StatusGepubliceerd - 2008
Evenementconference; ASA conference, Paris 2008; 2008-07-29; 2008-08-04 -
Duur: 29 jul 20084 aug 2008

Congres

Congresconference; ASA conference, Paris 2008; 2008-07-29; 2008-08-04
Periode29/07/084/08/08
AnderASA conference, Paris 2008

Vingerafdruk

rooms
air
reverberation
acoustics
ray tracing
iteration
physics
estimates

Citeer dit

Wenmaekers, R. H. C., Hak, C. C. J. M., Martin, H. J., & Luxemburg, van, L. C. J. (2008). Air Absorption Error in Room Acoustical Modeling. In Proceedings of the 155th ASA conference, Paris 2008 (blz. 3129-3134)
Wenmaekers, R.H.C. ; Hak, C.C.J.M. ; Martin, H.J. ; Luxemburg, van, L.C.J. / Air Absorption Error in Room Acoustical Modeling. Proceedings of the 155th ASA conference, Paris 2008. 2008. blz. 3129-3134
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title = "Air Absorption Error in Room Acoustical Modeling",
abstract = "Most statistical and ray-tracing computer models take into account the absorption of sound by air to estimate the reverberation time. Extensive research by many scientists lead to the standardized calculation model for pure tone air absorption. The phenomenon was discovered from a room acoustical point of view by Sabine, while the further development of the calculation model took place in the fields of physics and environmental noise. As a result, several parameters and units are used for the same phenomenon. However, air absorption is calculated for pure tones, while room acoustics calculations are performed in frequency bands. Most computer models use the centre-frequency of the normalised frequency bands to calculate the air absorption by the pure tone method. Reverberation measurements in frequency bands under laboratory and practical conditions show that errors larger than the Just Noticeable Difference result in calculating the air absorption by this ‘centre-frequency method’. No literature was found that provides an accurate air absorption calculation for frequency bands in relation to the reverberation time without the use of iteration. An existing rule of thumb is validated for application to room acoustics.",
author = "R.H.C. Wenmaekers and C.C.J.M. Hak and H.J. Martin and {Luxemburg, van}, L.C.J.",
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Wenmaekers, RHC, Hak, CCJM, Martin, HJ & Luxemburg, van, LCJ 2008, Air Absorption Error in Room Acoustical Modeling. in Proceedings of the 155th ASA conference, Paris 2008. blz. 3129-3134, 29/07/08.

Air Absorption Error in Room Acoustical Modeling. / Wenmaekers, R.H.C.; Hak, C.C.J.M.; Martin, H.J.; Luxemburg, van, L.C.J.

Proceedings of the 155th ASA conference, Paris 2008. 2008. blz. 3129-3134.

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

TY - GEN

T1 - Air Absorption Error in Room Acoustical Modeling

AU - Wenmaekers, R.H.C.

AU - Hak, C.C.J.M.

AU - Martin, H.J.

AU - Luxemburg, van, L.C.J.

PY - 2008

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N2 - Most statistical and ray-tracing computer models take into account the absorption of sound by air to estimate the reverberation time. Extensive research by many scientists lead to the standardized calculation model for pure tone air absorption. The phenomenon was discovered from a room acoustical point of view by Sabine, while the further development of the calculation model took place in the fields of physics and environmental noise. As a result, several parameters and units are used for the same phenomenon. However, air absorption is calculated for pure tones, while room acoustics calculations are performed in frequency bands. Most computer models use the centre-frequency of the normalised frequency bands to calculate the air absorption by the pure tone method. Reverberation measurements in frequency bands under laboratory and practical conditions show that errors larger than the Just Noticeable Difference result in calculating the air absorption by this ‘centre-frequency method’. No literature was found that provides an accurate air absorption calculation for frequency bands in relation to the reverberation time without the use of iteration. An existing rule of thumb is validated for application to room acoustics.

AB - Most statistical and ray-tracing computer models take into account the absorption of sound by air to estimate the reverberation time. Extensive research by many scientists lead to the standardized calculation model for pure tone air absorption. The phenomenon was discovered from a room acoustical point of view by Sabine, while the further development of the calculation model took place in the fields of physics and environmental noise. As a result, several parameters and units are used for the same phenomenon. However, air absorption is calculated for pure tones, while room acoustics calculations are performed in frequency bands. Most computer models use the centre-frequency of the normalised frequency bands to calculate the air absorption by the pure tone method. Reverberation measurements in frequency bands under laboratory and practical conditions show that errors larger than the Just Noticeable Difference result in calculating the air absorption by this ‘centre-frequency method’. No literature was found that provides an accurate air absorption calculation for frequency bands in relation to the reverberation time without the use of iteration. An existing rule of thumb is validated for application to room acoustics.

M3 - Conference contribution

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Wenmaekers RHC, Hak CCJM, Martin HJ, Luxemburg, van LCJ. Air Absorption Error in Room Acoustical Modeling. In Proceedings of the 155th ASA conference, Paris 2008. 2008. blz. 3129-3134