This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Improvement of Sound Quality of Exterior Idling Noise of Small Diesel Truck
Annotation ability available
Sector:
Language:
English
Abstract
Artificial exterior diesel idling noise and its variations with varying its parameters such as frequency spectrum and time wave form were made using the generation techniques developed in the author's laboratory. The subjective evaluations on unpleasantness of the artificial idling noise and its variations were conducted through the paired comparison technique. As a result, the reduction of sound pressure level of high frequency component was the most effective countermeasure for better sound quality with less unpleasantness and this was realized by engine compartment enclosure in the real small diesel engine truck. The result was quite successful. Togather with this result, psychoacoustic scalings such as loudness, roughness, fluctuation strength and so on were tested for estimating unpleasantness of the exterior idling noise.
Recommended Content
Authors
Citation
Hashimoto, T., Hatano, S., and Isuzu, H., "Improvement of Sound Quality of Exterior Idling Noise of Small Diesel Truck," SAE Technical Paper 951289, 1995, https://doi.org/10.4271/951289.Also In
References
- Hand book of the Test by human senses 367 397 NIKKA-GIREN Publisher 1963
- Saito H. Hashimoto T. Hatano S. Sound Quality Evaluation of Interior Noise, -Objective Evaluation of Comfortableness and Powerfulness- Transactions of the Society of Automotive Engineers of Japan 24 2 103 107 1993
- Hashimoto T. Hatano S. Modofication of Roughness level for Higher Correlation with Unpleasantness, - Weighted Roughness level due to Modulation Frequencies- Proceedings of JSAE Spring Convention 125 128 1994
- Zwicker E. Fastl H. Psychoacoustics: Facts and Models Spriger-Verlag 1990