MELLEN: SOUND PROPAGATION IN A RANDOM MEDIUM 





1.0 



0.5 



\ 

 \ 



- \ 



- \ 



0.2 



u 



^ 01 

 III ^•* 



o 



.05 



O 



5 



.02- 



RESULTANT 



DIFFRACTION 



14 I I I I I I I 



J I I L_L 



0.5 1.0 2.0 5.0 



FREQUENCY (kHz) 



10 



Figure 8. SOUND-CHANNEL ATTENUATION (THEORETICAL) 



397 



