Method for determining the contributions of individual transmission paths

摘要

A method for determining the contributions of individual sound transmission paths to the operation-dependent total noise of a sound transmitting structure includes the following steps: applying at least one acceleration sensor and/or source microphone in the area of each sound input position; applying at least one target microphone and/or acceleration sensor in the area of a receiving position; carrying out at least one simultaneous measurement of sound pressure and/or acceleration at the receiving position and of acceleration and/or sound pressure at each sound input position during operation; determining at least one acceleration-to-pressure and/or acceleration-to-acceleration sensitivity function and/or at least one pressure-to-pressure sensitivity function; determining reciprocally measured frequency response functions between each sound input position and each receiving position; determining the inertances in the operational state for at least one sound input position; determining of at least one force at at least one sound input position based on the computed inertances and the accelerations measured during operation at the sound input positions; and determining the contributions of the individual transmission paths.