This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Analytical and Experimental Approach to Acoustic Package Design
Technical Paper
2009-01-2119
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The interior noise signature of passenger vehicles is a significant contributor to a customer's perception of quality. The vehicle acoustic package can be an important piece to the acoustic signature, and can be utilized not just to reduce the sound levels inside the vehicle but also to shape the sound such that it meets the expectations of the customer. For this reason the definition, design, and development of an acoustic package can be vital to meeting vehicle-level acoustic targets. In many situations this development is conducted experimentally, requiring the availability of prototype vehicles and acoustic package components. Of more value is the ability to develop components early in the design phase, leveraging analytical tools to define component-level requirements and targets to meet the vehicle-level targets, and ultimately meet the final customer expectations.
This paper presents efforts made to further combine the benefits of experimental and analytical approaches to acoustic package design. The benefits of which include the ability to predict interior sound levels for alternative acoustic package configurations early in the design phase, allowing for listening studies to verify component and vehicle-level targets. Additionally, the performance of alternative designs can be quantified in the frequency domain and using sound quality metrics, while minimizing the necessity for physical testing. A current market vehicle was utilized for this development, in which experimental measurements were developed and conducted for optimum cooperation and utilization of analytical tools. The acoustic package was characterized to predict the sound levels for alternate acoustic package designs, listening studies were performed and metrics were calculated for each configuration to verify performance against the vehicle-levels targets, and developed solutions were verified through experimental testing.
Recommended Content
Citation
Freeman, T. and Pickering, D., "Analytical and Experimental Approach to Acoustic Package Design," SAE Technical Paper 2009-01-2119, 2009, https://doi.org/10.4271/2009-01-2119.Also In
References
- SEA Model Development Considerations for Cost-Driven or Developing Market Vehicles Rodrigues A. Musser C. SAE 2007 SAE 2007-01-2308
- The Use of in Vehicle STL Testing to Correlate Subsystem Level SEA Models Connelly T. Knittel J. Drishnan R. Huang L. 2003 SAE 2003-01-1564
- Energy-based Vibroacoustics: SEA and Beyond Sarradj, E.
- SEA Modeling of A Vehicle Door System Zhang Q. Parrett A. Wang C. Wang D. Huang M. 2005 SAE 2005-01-2427
- Standard Test Method for Impedance and Absorption of Acoustical Materials Using A Tube, Two Microphones and A Digital Frequency Analysis System ASTM
- Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method ASTM
- Laboratory Measurement of the Airborne Sound Barrier Performance of Automotive Materials and Assemblies SAE SAE J1400
- tandard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements ASTM
- A Tool for Predicting Interior Sound Package Treatment in a Truck Saha P. Henry T. Chahine J. Demrose G. SAE 2001 2001-01-2807
- Engine Sound Level Measurement Procedure SAE SAE J1074
- Acoustic Materials Workshop SAE 2003 2003 SAE NVC
- Development of a Luxury Vehicle Acoustic Package Using SEA Full Vehicle Model Huang M. Krishnan Connelly T. Knittel J. 2003 SAE 2003-01-1554