Abstract
Emitting mechanism of edge tone ware explained by Konig W. in 1912. Theoretical frequency of edge tone was shown by Kruger F. and Konig W. in 1920. However, re-study of generation process of edge tone is important for countermeasures of air noise from machines. In this paper, frequencies of edge tone, distributions of fluid velocity between a nozzle and an edge and static pressures around an edge were measured. Feedback of edge tone is confirmed and a noise source is specified by the measurements.
