On 21/02/2008 20:59, John McKerrell wrote: > On 21 Feb 2008, at 19:04, David Earl wrote: > >> On 21/02/2008 09:26, John McKerrell wrote: >>> Yes, this sounds great. I don't tend to log explicit waypoints so >>> this is going to be much more useful for me. Did you think about >>> having a little arrow or some sort of marker that followed the >>> trace as you played the audio or is there some specific reason >>> that this would not be possible? >> The effect is quite mesmeric. One thing I didn't appreciate until I >> saw it working though is that you no longer need make a loop or >> anything else on your GPS. As long as you have a known point to >> sync to at the start, you can then just dictate "White Swan pub on >> the left NOW", and the orange arrow will point to where you were >> when you said NOW. That is really quite a neat feature - perhaps >> you had realised that consequence - I hadn't. >> > Funnily enough, the first time I tried audio tracing I just assumed > there was something like this available, so when I came to use my > audio I realised that all my "post box on the left .... NOW, bus stop > on the right... NOW" was fairly useless. Maybe I'll go back and try > that trace again now ;-)
One thing I realised just cycling along this evening, having stepped back from the project for a while, is that when you don't have a waypoint at the start it is hard to synchronise on a marker, because it they are sampled, not related to any specific point, so to make this truly useful I need to add something to let you adjust or identify the sync point. In the meantime, you might need to add or remove a small amount of silence at the beginning of your sound track in Audacity to compensate. I'll make sure I put a proper solution in for this soon. David _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
