Measurement of sound reduction using the intensity method

  • Jacobsen, Finn (Project Manager)
  • Machimbarrena, Maria (Project Participant)

    Project Details


    Since the early 1980s experimenters have compared the results of conventional diffuse-field measurements of the sound reduction of partitions with results determined using the sound intensity method. Such investigations have let to increased knowledge about the sources of errors not only of the intensity-based method but also of the much more established diffuse-field method. However, in spite of these improvements all such comparisons published so far indicate systematic deviations outside a relatively narrow frequency band from 250 Hz to 3.15 kHz.
    In this project the methods were compared for a variety of test walls. In all cases excellent agreement was obtained in an extended frequency range from 80 Hz to 6.3 kHz.
    Effective start/end date15/09/199801/05/1999


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