The attenuation, equation (A. 11) with f = 1, is shown in Figure A-2(a) in comparison with that for the single block, equation (A.4). It is seen that for the same mass the magnitude of the transfer function is significantly reduced for the two-mass system, where the variable flux is attenuated from block-1 to block-2, particularly for small conductance ratios, k. This is the result of a higher-order phase shift (interference) between the oscillating source flux and the block-2 output flux, as shown
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