Study on Sound Quality Evaluation of Exterior Tonal Sound for Construction Machinery.

Abstract

According to the trend of giving high quality to construction machinery, designers are being required to improve the tonal impression of this machinery, as well as cars and air conditioners. However, it is very difficult to determine tonal impression due to the lack of sensory scalings. In particular, this machinery has several sound sources, i. e., engines, fans and so on, so exterior sound has a complex tonal construction. This paper deals with a dimensional analysis of tonal elements, and a quantitative evaluation method based on tonal elements.