Fig. 6: Sound pressure level maps at 5, 10 and 20 kHz for Subject 4 for an incident unit amplitude plane wave.
From: Evaluation of fetal exposure to environmental noise using a computer-generated model
SPL inside all anatomical regions for an incident unit amplitude plane wave traveling in the negative \(x\) direction. The acoustic attenuation coefficient in the uterus is that of amniotic fluid in (A−F) and that of muscle tissue in (G−L). 3D maps of the SPL re 1 Pa are shown in (A−C) and (G−I). D−F and J−L show a slice of the SPL re 1 Pa in the transverse plane passing through the barycentre of the uterus. Anatomical groups and contours are labeled in (A) and (D), respectively.
