==================== Classical TPA ==================== Classic TPA methods describe source excitations in terms of the interface forces between active and passive side. It is mainly used to troubleshoot NVH problems in existing products. .. only:: html .. figure:: ./../data/matrix_inverse.png :height: 150px :target: 14_matrix_inverse_TPA.html Matrix Inverse .. toctree:: :hidden: 14_matrix_inverse_TPA