A 3D Multiport Scattering Matrix Based-Method for Educing Wall Impedance of Cylindrical Lined Duct Section: Simulation and Error Evaluation

<table>Normalized acoustic impedance of the liner measured with TMM: (black) normalized resistance, (grey) normalized reactance.</table>

Advances in Acoustics and Vibration

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Figure 4

Figure 4: A 3D Multiport Scattering Matrix Based-Method for Educing Wall Impedance of Cylindrical Lined Duct Section: Simulation and Error Evaluation 

Figure 4 | A 3D Multiport Scattering Matrix Based-Method for Educing Wall Impedance of Cylindrical Lined Duct Section: Simulation and Error Evaluation 