29th Annual Business Meeting and Conference on Tire Science and Technology

Doubletree Hotel Akron/Fairlawn: Akron, OH, USA

Tuesday, September 21, 2010: 10:10 AM
Aspen Ballroom (Doubletree Hotel Akron/Fairlawn)
Dongsoo Kang1, Yonghun Kim2, Seungkyu Lee2, Sangju Lee2, Minho Song3 and Yanghann Kim1, (1)Center for Noise and Vibration Control (NOVIC), Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, (2)Hankook Tire Company, Daejeon, South Korea, (3)Graduate School of Culture Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
Physically, noise can be analyzed with respect to energy distribution in frequency range and its level. But it is not the best way to evaluate the tire noise sometimes if the objective analysis result is not well correlated with human perception. Therefore many studies have been done to make the good objective parameters in noise analysis and we call them sound quality metrics. On the contrary noise subjective evaluator should be studied not only by own experience but also by the intended training program. However, we don’t have any formal education course for subjective noise evaluation skill upgrade until now. Triadic comparison tests are done by the best skilled subjective evaluators who have over 15 years experience. Comparing tire noise samples with each other, technical descriptors are collected. Paired comparison method is applied to find the physical meanings of descriptors, and the results are used for training. Also we make timbral training simulator to improve tire noise evaluation skill. Based on the conventional timbral training method, training simulator is made by dividing tire noise by frequency range. This simulator is tested for several beginners and it shows a good result. We combine three processes and make total training method for improving tire noise evaluation ability.