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.
Methods for Determining Muffler Transmission Loss in Octave Bands
Sae Technical Papers
SAE 2016 World Congress and Exhibition ; 2016
2016-04-05
Aufsatz (Konferenz)
Englisch
Prediction of Transmission Loss for Motorcycle Muffler
SAE Technical Papers | 1999
|Prediction of transmission loss for motorcycle muffler
Kraftfahrwesen | 1999
|Analytical design of muffler based on transmission loss calculation
Kraftfahrwesen | 2000
|Muffler Transmission Loss Optimization for a Vehicle Using Genetic Algorithm
Springer Verlag | 2023
|Design Optimization of Vehicle Muffler Transmission Loss using Hybrid Method
British Library Conference Proceedings | 2015
|