Sound Quality Jury Analysis versus Sound Pressure Measurement in Snowmobiles 2009-01-2231
Restrictions on noise and gaseous emissions of snowmobiles have been a topic of much attention for the past decade. Concerns with snowmobiles in our national parks and with private land owners have resulted in new park legislations as well as legal disputes regarding recreational vehicle rights-of-way. The most widely used standard for snowmobile testing is SAE J192 Exterior Sound Level for Snowmobiles, SAE Recommended Practice. This is a wide-open throttle test with sound level meters 50 feet on either side of the snowmobile. The sound pressure cannot exceed a certain level for the snowmobile to pass. Perceived noise also plays an important role in the objections to snowmobiles. This paper considers the role of Sound Quality methods, specifically Jury Analysis, in understanding the difference between objective noise analysis and subjective noise preferences; also considering the underlying snowmobile attributes that control snowmobile noise. Both objective and subjective data taken at the SAE Clean Snowmobile Challenges will be used as the basis of the analysis. Conclusions show that there are measurable quantities related to annoyance that correlate with subjective noise preference.
Citation: Meldrum, J. and Knittel, J., "Sound Quality Jury Analysis versus Sound Pressure Measurement in Snowmobiles," SAE Technical Paper 2009-01-2231, 2009, https://doi.org/10.4271/2009-01-2231. Download Citation
Author(s):
Jay Meldrum, Jud Knittel
Affiliated:
Michigan Technological University, HEAD acoustics, Inc.
Pages: 10
Event:
SAE 2009 Noise and Vibration Conference and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Recreational vehicles and equipment
Sound quality
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