[CdnTiger]

Thanks for the tip, DrWho. I played around with Audacity a bit the other night and am close to the measurement results I'm looking for, but not quite there yet. As the test frequency gets higher, the plot gets very dense and difficult to read due to Audacity displaying the actual waveform. I'll have to try playing with it to plot the SPL in a uniform density plot regardless of the frequency. The guys at the Audacity forum suggested using the Tremolo effect...