A: If you are not particularly interested in the result in receiver positions on the other side of the "walls", we cannot recommend to use the sound transmission modelling. Particularly with low sound insulation (R < 10 dB) the method has some drawbacks, please see paper from BNAM 2008.
You can either use absorption only, or a combination of transparancy (same for all frequencies) and absorption; this will work as shown on the last page of this old Powerpoint presentation.
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Q: I would like to divide my room-model with curtains or a thin plastic material and analyze the absorption. Can I use sound reduction Index for this?You must be logged in to download other directivity files. Already a user? A user account means that you will receive Odeon newsletters 2-4 times a year. You can at any time unsubscribe your account again, and your contact information is kept confidential within Odeon A/S and our Brüel & Kjær partners. |