>> One thing that just occured to me, was the possibility of
>> "pointing" with Darksense. Would it be possible to send a
>> sound at a target and make sure it bounces off at a good
>> angle in the direction of another troll? Effectively
>> pointing at something.
Peter Metcalfe
> Sound does not travel in a line but radiates out from its source.
A suitable interference pattern will cause a strong direction and at least weaker ones. An articulation might create enough of a strong wave to be used for selective "pings".
It might be easier to modulate the emitter so that it resonates with the target only, though.
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