The Study of Sound Quality for Car Compressor

Abstract:

As cars become more and more quiet the sound quality of rotary components such as car compressor becomes more important in the customer’s subjective perception of passenger car quality. This needs a new evaluation method which is not only the traditional method like sound pressure level but also Psychoacoustic Metrics to focus the specification of component sounds. This paper on one hand analyzed one car’s abnormal noise reason through the tests, found the main problem frequency band of the compressor, and on the other hand studied the compressor’s psychoacoustic metrics. In this paper the countermeasure of solving this problem was also given, and then noise level and psychoacoustic parameters are compared. Both objective evaluation and subjective evaluation showed that the compressor with the solution not only reduced the sound pressure level, but also improved the car sound quality greatly.

• Periodical: Applied Mechanics and Materials (Volumes 226-228)
• Pages: 444-447
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.226-228.444
• Online since: November 2012
• Authors: Yan Fang Hou, Guo Hua Han, Xue Ying Xu
• Keywords: Car Compressor, Psychoacoustic Metrics, Sound Pressure Level, Sound Quality

References

[1] J.N. Penfold. Power Window Sound Quality-a Case Study. SAE.Detroit Michgan; 1997.

[2] G. Cerrato. Automotive Sound Quality –Accessories, BSR, and Brakes. Sound and Vibration: Vol. 43 (2009), p.10.

[3] Information on http://delphi.com/pdf/contact/brochures/Delphi_Compressors.pdf.

[4] J.Y. Jeon, J. You, H.Y. Chang. Sound radiation and sound quality characteristics of refrigerator noise in real living environments. Applied Acoustics: Vol. 68 (2007), p.1118.

DOI: 10.1016/j.apacoust.2006.06.005

[5] M. Florentine. Loudness. Springer Handbook of Auditory Research: Vol. 37 (2011), p.1.