As I attempted to pick my way through a basement chock full of boxes I tried different sounds. (Lately, I've been trying the "sshh" sound and having very good luck with it. I'll write another post about the benefits of this type of beacon soon.) I stood at one end of the basement, turned around in circles several times and then tried to pick my way through the room, admittedly using memory to identify the locations of some of the obstacles and attempting to correlate those memories to what I was picking up with echolocation.
|Sound Reflections on|
"Angled" vs "Flat"
Scan for Simple Targets at FirstKnowing this, it is particularly interesting to scan the room and try to find all of the boxes or objects that have nice big target surfaces. I did this using the "sshh" sound since it was very quite room with no other interfering noises and all of the objects I was looking for were fairly close to me. After just a few minutes of echolocating around the room, I was able to easily detect all of the boxes with nice flat surfaces pointing at me.
ImplementationYou can use this strategy to determine "calibration points" like walls, television screen, cupboards, refrigerator, etc. Objects that have nice flat surfaces that you will easily be able to detect using echolocation. This calibration will begin to help you orient yourself in a room sufficiently to understand some of the large components. For instance, if you are in a square room, you will receive strong echo signals from four sides, and a weaker echo signal from the corner areas.
Try this out and let me know what you think!