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F igure 1 Schematic Representation of a Hole

F igure 1 Schematic Representation of a Hole. F igure 1 Schematic Representation of a Hole. Figure 2 Schematic Conical Hole. Figure 2 Schematic Conical Hole. Radiation Impedance. Diffuse Acoustic Field. Figure 3 VA-One Model. Radiation Impedance. Diffuse Acoustic Field.

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F igure 1 Schematic Representation of a Hole

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  1. Figure 1 Schematic Representation of a Hole

  2. Figure 1 Schematic Representation of a Hole

  3. Figure 2 Schematic Conical Hole

  4. Figure 2 Schematic Conical Hole

  5. Radiation Impedance Diffuse Acoustic Field Figure 3VA-One Model

  6. Radiation Impedance Diffuse Acoustic Field Figure 3VA-One Model

  7. Figure 4Comparsion of Results of a Hole (,)

  8. Figure 5 Effect of Hole Shape

  9. Figure 6 Results of Conical Hole

  10. Figure 7 Effect of Radius Ratio of Conical Hole

  11. Figure 8Dimensions of Hole with Area Change

  12. Figure 9 Effect of Radius Changeof StraightHole

  13. Figure 10 Dimensions of Hole with Expansion

  14. Figure 11 Results of Hole with Expansion Chamber

  15. Figure 12Comparison the Effect of Different Cross Area of Hole with Expansion Chamber

  16. Figure 13Comparison of Length Effect of Hole with Expansion Chamber

  17. Figure 14 Schematic Representation of Hole with Helmholtz Resonator (, , )

  18. Figure 15 Comparison of Results of Hole with Helmholtz Resonator

  19. Figure 16 Comparison of Results of Large Opening

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