Research on nearfield acoustic holography (Selection strategies for optimal reference sets using ARMA model)

摘要

It is not always possible to apply Nearfield Acoustic Holography (NAH) for the acoustic field composed of multiple incoherent sources. To apply NAH properly it is necessary to select optimal reference sets and divide mutually incoherent acoustic fields. In this work a new selection technique for optimal reference sets using the ARMA model is presented and tested by using actual tire noise.