Optimization of Noise Transfer Path Based on the Composite Panel Acoustic and Modal Contribution Analysis

Figure 4

The acoustic modal of the cab. (a) 98.6 Hz: 1^st acoustic modal. (b) 105.6 Hz: 2^nd acoustic modal. (c) 147.4 Hz: 3^rd acoustic modal. (d) 184.7 Hz: 4^th acoustic modal.

(a)

(b)

(c)

(d)