Industrial Noise

Odeon Industrial and Odeon Combined includes extended source types, namely line source, surface source and multi surface source. This allows accurate modelling of industrial environments where the sound sources are not well represented by point sources.

The industrial machinery hall Studstrup was investigated in the Elsam project. Read more about this research in two conference papers from 1998 and 1999, by Claus Lynge Christensen and Hans Torben Foged.

[1] For modelling large machines like the turbines in Studstrup turbine hall it is efficient to make use of surface sources. Even with a simple modelled geometry ODEON predicts SPL(A) as measured.

[2] The A-weighted Sound Pressure level was measured and modelled in ODEON in Studstrup turbine hall in 12 receiver points.

[3] The radiated sound power from the turbines have been measured using intensity measuring techniques as described in [XXlink]. The sound from each turbine has been modelled using 17 surface sources and two point sources.

[4] With a roughly modelled geometry and estimated surface materials the comparison between measured and modelled SPL(A) showed an accuracy in prediction within 1 dB(A).

[5] The sound energy and sound pressure level from different surface sources are displayed at receiver 12 below, and can easily be analyzed from the multipoint response in ODEON.

ODEON Features for industrial environments

Features Benefits
Global reverberation time estimate Very fast and accurate, takes into account the room geometry and the distribution of absorption materials and surface scattering
Calculation of sound pressure level in selected positions, octave bands and A-weighted Useful for comparison with noise limits
Mapping of room acoustic parameters in grids Overview of sound distribution; easy to localise hot spots
Calculation of spatial decay rate, DL2 Used for evaluation of the acoustic attenuation with distance in a room
Calculated STI (Speech Transmission Index) Used for evaluation of speech privacy in open plan spaces
Large sound sources can be modelled using lines, surfaces and boxes Important for an accurate acoustic modelling of halls with large noise sources
Transmisson Loss of surfaces between rooms can be specified Prediction of sound level in adjacent rooms