Transfer Path Analysis and Construction of Sound Source Model Using Inverse-Numerical Acoustic Analysis

Abstract

Using inverse-numerical acoustic analysis, we constructed a sound source model of a diesel engine that was installed on a combine harvester and confirmed its accuracy by comparing the identified and measured results of the surface vibration. A transfer path analysis of the operator ear sound level was also carried out, using the identified sound source model and the measured acoustic frequency response function. The operator ear sound level improved based on the results of the transfer path analysis, showing the sound source model’s effectiveness.