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Methods for Determining Muffler Transmission Loss in Octave Bands
Technical Paper
2016-01-1317
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Insertion loss in one-third or octave bands is widely used in industry to assess the performance of large silencers and mufflers. However, there is no standard procedure for determining the transmission loss in one-third or octave bands using measured data or simulation. In this paper, assuming that the source is broadband, three different approaches to convert the narrowband transmission loss data into one-third and octave bands are investigated. Each method is described in detail. To validate the three different approaches, narrowband transmission loss data of a simple expansion chamber and a large bar silencer is converted into one-third and octave bands, and results obtained from the three approaches are demonstrated to agree well with one another.
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Authors
Citation
Wang, P., Hua, X., Wu, T., and Herrin, D., "Methods for Determining Muffler Transmission Loss in Octave Bands," SAE Technical Paper 2016-01-1317, 2016, https://doi.org/10.4271/2016-01-1317.Also In
References
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