15.0 r 



12.5 - 



10.0 - 



7.5 - 



5.0 - 



2.5 - 



0.429 



0.551 



0.675 0.797 0.919 



<jB = 27r/TB in seconds 



1.042 



1.710 



Figure 13 - Computation of Spectral Density and Total Energy by: 1) Successive Steps 



in One Analyzer, and 2) Simultaneous Calculation in the Same Analyzer 



with the Addition of Another Power Integrator and X-Y Recorder 



46 



