Fig. 1. The external ear canal extraction process using DICOM volume data of the head temporal region
Fig. 2. Experimental modeling reflecting the shape characteristics of external ear canal (length, angle, inner and outer diameters)
Fig. 3. The simulation process by increasing the frequency by 200Hz at a pressure of 1 Pa
Fig. 4. Graph simulating the acoustic size for each frequency by modeling each external ear canal
Fig. 5. The 1st peak response frequency graph classified by length, angle, and inner/outer diameter of the external ear canal
Fig. 6. The regression cover graph for linear correlation and quadratic correlation
Fig. 7. The simulation result graph through meta-model
Table 1. Measurements of the shape characteristics including external ear canal length, angle, and the circumference of the inner/outer diameters
Table 2. Acoustic sound measured at the eardrum
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