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Sound pressure level vs. distance from sources in rooms.

Author(s) : WARNOCK A. C. C.

Summary

In an earlier ASHRAE research project, RP-339, sound pressure levels in a variety of normally furnished rooms were found to be reduced by 3 decibels each time the distance from the source was doubled. No dependence on room absorption was found. Under the conditions of the project reported in the paper, RP-755, the reduction in level with increasing distance for a source in the room was found to depend on the inverse of the room reverberation time. However, for furnished rooms (reverberation times around 0.5 second), the attenuation is still very close to 3 decibels per doubling of distance from the source.

Details

  • Original title: Sound pressure level vs. distance from sources in rooms.
  • Record ID : 1999-3116
  • Languages: English
  • Source: ASHRAE Transactions. 1998 Winter Meeting, San Francisco, CA.
  • Publication date: 1998
  • Document available for consultation in the library of the IIR headquarters only.

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