Trek Overview and Method

Starting from North Point Park I walked towards the Northpoint Pumping Station and Historic Water Tower. For the maps that follow, the Water Tower is used as a point of reference. The Tower is visible from all 5 locations, and has been there since 1874. The pumping station has changed, but still occupies the same space. I used combination of spectrum analysis with high- and low-pass filters in Audacity 1.3b to cut interference. Pass filters were the only filters used.

With a good camping compass, and these maps, you should be able to put yourself in my place using the tower. If you don't have a compass, but a sextant, I used Google Earth to pinpoint my locations after my walk, and the Latitude and Longitude is on each map for the microphone locations.