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

<table>The real part of the normalized educed acoustic impedance. Blue: the first incoming pressure vector, red: the second incoming pressure vector compared to the TMM results.</table>

Advances in Acoustics and Vibration

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Figure 28

Figure 28: A 3D Multiport Scattering Matrix Based-Method for Educing Wall Impedance of Cylindrical Lined Duct Section: Simulation and Error Evaluation 

Figure 28 | A 3D Multiport Scattering Matrix Based-Method for Educing Wall Impedance of Cylindrical Lined Duct Section: Simulation and Error Evaluation 