Figure 11. Sound transmission loss versus frequency using 2 parallel QWR in serial arrangement during the optimization process. Lx=0.0282 m is the optimum choice

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Low Noise Intake System Development for Turbocharged I.C. Engines Using Compact High Frequency Side Branch Resonators

Sabry Allam

Advances in Powertrains and Automotives. 2015, 1(1), 12-23