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Improvement of the method of statistical energy analysis for the calculation of sound insulation at low frequencies

✍ Scribed by A. Elmallawany

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
192 KB
Volume
15
Category
Article
ISSN
0003-682X

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✦ Synopsis

In the application of the statistical energy analysis theory to the calculation of sound insulation it has been determined that there is a great discrepancy between the measured and theoretical values at low frequencies. This is one of the disadvantages of statistical energy analysis.

Therefore, it was necessary to improve this method at low frequencies. The measured and theoretical values of the sound transmission loss at low frequencies are made to reach good agreement by the introduction of a correction factor. NOMENCLATURE c = Speed of sound in air. r = Half the smallest dimension of the panel. Rid = Sound transmission loss for diffused sound field from the mass law.

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