Lecture 43 of the NPTEL course on "Noise Control in Mechanical Systems", introduces micro perforated panel (MPP) sound absorbers, including their operating principle, dissipation process, and the significance of micro holes in absorbing sound energy. Impedance, thermo-viscous losses, and the absorption of incident sound energy are all discussed.

Stay tuned as we uncover more about noise control techniques in upcoming lectures.

Course Name: "Noise Control In Mechanical Systems"

Course Instructor:
Prof. Sneha Singh
Department of Mechanical & Industrial Engineering,
Indian Institute of Technology, Roorkee.

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