On 2010年09月30日 23:34, Zhang Weiwu wrote:
> # If it works outdoor it's enough. No need to use indoor.
> # If it can find the 'partner' in 150 meters it's good enough. 300 meter
> even better. Longer not needed.
In fact, consider the low requirement of the application, a simple
device like this will do:
1. have a button on one device
2. have a beep device on the other
3. if I press the button it give a short beep so loud that I can hear
in 150 meters
Then I will be able to use the nature radar: my hearing ability, to
locate the object. It's actually pretty precious, precious for my
scenario. With a single beep I have both angel information and distance
information. (To not to bother others too much, using a recorded dog
bark instead of a beep would be helpful.)
