Indoor measurements of low-frequency noise for annoyance assessment

Steffen Pedersen, Henrik Møller, Kerstin Persson-Waye

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

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Resumé

The sound pressure level within a room may vary as much as 20-30 dB at low frequencies. Mainly the highest levels are of concern with regards to annoyance assessment, rather than a room average. The highest levels can however be very difficult to find. Sound fields in rooms were investigated using numerical simulations and scanning measurements of the entire sound pressure distributions in three different rooms. Measurements were also performed in three-dimensional corners as well as according to Swedish and Danish guidelines, which include positions close to corners in the floor plane (0.5 to 1 m) in an attempt to ensure high levels. The sound pressure level that is exceeded in only 10% of the space of a room (L10) is proposed as a reasonable target for a measurement method. The Swedish method showed good results, however its inclusion of C-weighting can potentially be problematic. The Danish method was found to have a high risk of significantly underestimating the noise present in a room, unless complainants can precisely appoint the measurement positions. It was found that a very good estimate of the L10 target level can be obtained by measuring only in four three-dimensional corners.
OriginalsprogEngelsk
TitelProceedings of 19th International Congress on Acoustics - ICA07 : Acoustics for the 21st Century
RedaktørerAntonio Calvo-Manzano, Antonio Pérez-López, J. Salvador Santiago
Antal sider6
ForlagSpanish Acoustical Society
Publikationsdato2007
ISBN (Elektronisk)84-87985-12-2
StatusUdgivet - 2007
BegivenhedInternational congress on acoustics - Madrid, Spanien
Varighed: 2 sep. 20077 sep. 2007

Konference

KonferenceInternational congress on acoustics
LandSpanien
ByMadrid
Periode02/09/200707/09/2007

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rooms
low frequencies
sound pressure
sound fields
pressure distribution
inclusions
scanning
estimates
simulation

Bibliografisk note

Invited paper ENV-05-003. Abstract i book of abstracts s. 187

Citer dette

Pedersen, S., Møller, H., & Persson-Waye, K. (2007). Indoor measurements of low-frequency noise for annoyance assessment. I A. Calvo-Manzano, A. Pérez-López, & J. Salvador Santiago (red.), Proceedings of 19th International Congress on Acoustics - ICA07: Acoustics for the 21st Century Spanish Acoustical Society.
Pedersen, Steffen ; Møller, Henrik ; Persson-Waye, Kerstin. / Indoor measurements of low-frequency noise for annoyance assessment. Proceedings of 19th International Congress on Acoustics - ICA07: Acoustics for the 21st Century. red. / Antonio Calvo-Manzano ; Antonio Pérez-López ; J. Salvador Santiago. Spanish Acoustical Society, 2007.
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title = "Indoor measurements of low-frequency noise for annoyance assessment",
abstract = "The sound pressure level within a room may vary as much as 20-30 dB at low frequencies. Mainly the highest levels are of concern with regards to annoyance assessment, rather than a room average. The highest levels can however be very difficult to find. Sound fields in rooms were investigated using numerical simulations and scanning measurements of the entire sound pressure distributions in three different rooms. Measurements were also performed in three-dimensional corners as well as according to Swedish and Danish guidelines, which include positions close to corners in the floor plane (0.5 to 1 m) in an attempt to ensure high levels. The sound pressure level that is exceeded in only 10{\%} of the space of a room (L10) is proposed as a reasonable target for a measurement method. The Swedish method showed good results, however its inclusion of C-weighting can potentially be problematic. The Danish method was found to have a high risk of significantly underestimating the noise present in a room, unless complainants can precisely appoint the measurement positions. It was found that a very good estimate of the L10 target level can be obtained by measuring only in four three-dimensional corners.",
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Pedersen, S, Møller, H & Persson-Waye, K 2007, Indoor measurements of low-frequency noise for annoyance assessment. i A Calvo-Manzano, A Pérez-López & J Salvador Santiago (red), Proceedings of 19th International Congress on Acoustics - ICA07: Acoustics for the 21st Century. Spanish Acoustical Society, International congress on acoustics, Madrid, Spanien, 02/09/2007.

Indoor measurements of low-frequency noise for annoyance assessment. / Pedersen, Steffen; Møller, Henrik; Persson-Waye, Kerstin.

Proceedings of 19th International Congress on Acoustics - ICA07: Acoustics for the 21st Century. red. / Antonio Calvo-Manzano; Antonio Pérez-López; J. Salvador Santiago. Spanish Acoustical Society, 2007.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

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Pedersen S, Møller H, Persson-Waye K. Indoor measurements of low-frequency noise for annoyance assessment. I Calvo-Manzano A, Pérez-López A, Salvador Santiago J, red., Proceedings of 19th International Congress on Acoustics - ICA07: Acoustics for the 21st Century. Spanish Acoustical Society. 2007