Published August 3, 2015
| Version 10002242
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Development of Prediction Tool for Sound Absorption and Sound Insulation for Sound Proof Properties
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Description
High frequency automotive interior noise above 500 Hz considerably affects automotive passenger comfort. To reduce this noise, sound insulation material is often laminated on body panels or interior trim panels. For a more effective noise reduction, the sound reduction properties of this laminated structure need to be estimated. We have developed a new calculate tool that can roughly calculate the sound absorption and insulation properties of laminate structure and handy for designers. In this report, the outline of this tool and an analysis example applied to floor mat are introduced.
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References
- Ohta M., et al, A Unified Theory of Sound Transmission Loss of General Double Walls and its Practical Application to the Double Wall with Sound Absorbent Material in the Cavity, The Acoustical Society of Japan Vol. 34 No.1, 1978, pp.3.
- Ohta M., et al, A Unified Theory of Sound Transmission Loss of General Double Walls and its Practical Application to the Double Wall with Sound Absorbent Material in the Cavity, The Acoustical Society of Japan Vol. 35 No.3, 1979, p.118.
- Nishimura. K., et al, Experimental Acoustic Duct Analysis Based on Transfer Matrix Method: 1st Report, Transactions of the Japan Society of Mechanical Engineers. C vol. 54 No. 504, 1987, pp.1740.
- Shiraki K., et al, Noise Prevention Design and Simulation, O-You-Gijutu Shuppan, 1987.
- Utsuno H., et al, Transfer Function Method for Measuring Characteristic Impedance and Propagation Constant of Porous Material, J. Acoust. Soc. Am. vol. 86 No.2, 1989, pp. 637.
- Yamaguchi T., Society of Damping Technology, Technology Exchange Forum, 1999, pp. 91-94.