THE COMPUTATION OF PARTIAL COHERENCE FUNCTION USED FOR SOUND SOURCE IDENTIFICATION

In this paper, a new method is applied to get the computation formula of partial coherence function. The main attention is paid to the computation formula of partial coherence function with three and four signals. The advantages of the method discussed in the paper are clear in physical meaning and easy to compute. At the end of the paper, the application of the method to the identification of an air compressor noise source is presented and the result is satisfactory.