on multiple breaks it registered over 100 MPH, yes I typed that correctly.
I knew that something was wrong, so I figured that's what the edit feature was for.
My question is this. How do you know which sound waves to include in your break speed. Can you tell by looking at the peaks? What if there are more than 2? say 4 or 5?
What iPhone device are you on (3, 3GS, iPhone 4, iPod, etc.)?
The most common cause of this is an echo. The initial sound hits the mic and gets registered as the break, but then an echo of the break is added to itself, which triggers the break to be re-detected in that spot. When this happens, both markers are in the break shot. Simply move the blue marker to the start of the previous peak, and move the red marker (which should be in the middle of a peak) to the start of that peak. Then zoom in on each one and make sure it's at the very start of that sound event.
If the markers are nowhere near the actual tip/rack sound events, then you can find them by zooming into the peaks and finding those peaks that meet certain visual criteria. A break shot is what is called an "Onset" audio event. This just means that the sound starts immediately at full amplitude (it doesn't have any lead-in.) The tip is very similar, just not quite as loud.
So the key to finding the right sound, is to look for the loudest "onset" sound. This usually means zooming into the left side of each peak to find the one that starts most immediately. Once you do this a few times, you'll start to get a feel for how the sounds look - a break shot usually starts loud, clips (i.e., reaches all the way to the top/bottom of the screen) for a short period, then falls off sharply with a "round tail". The same is true for the tip, it's just not quite as loud.
Here's an image that might help - this was taken from a break shot in a quiet room, so your breaks will probably look a bit different if you are doing this in a pool room with music:
http://www.mybreakspeed.com/images/edit.gif