AREA I 



INTERMEDIATE SOURCE 



INTERMEDIATE HYDROPHONE 



E23 THEORY 



□ EXPERIMENT 



A, 





■ ■■ 



3000cps 

 CURVE 38 



JH 



_LL 



. I r-r-Tr-w- 



6 8 10 



AREAH 



INTERMEDIATE SOURCE 



INTERMEDIATE HYDROPHONE 



7777L THEORY 



□ EXPERIMENT 



A, 



Ark>?xtt;%:-X 



r%i 







6 8 10 10 8 6 



db + 

 Figure 2 PING-TO-PING SIGNAL VARIABILITY Componson Between A 



