Low frequency sounds are more difficult to localize than high frequency sounds, for a variety of reasons. I would be surprised, though, if a widely-spread grid

Low frequency sounds are more difficult to localize than high frequency sounds, for a variety of reasons. I would be surprised, though, if a widely-spread grid of detectors wouldn't be able to find it. https://en.wikipedia.org/wiki/Sound_localization#Evaluation_for_low_frequencies https://en.wikipedia.org/wiki/Sound_localization#Evaluation_...