The frequency range varies (it's kind of a chirp) as the black holes spiral in towards each other.
But the frequency at the end is in the auditory range. The instrument is literally measuring a displacement in the same range as many of the things you mention (traffic, mining, ...). A band pass filter will not do.
http://www.caltech.edu/news/gravitational-waves-detected-100...
The frequency range varies (it's kind of a chirp) as the black holes spiral in towards each other.
But the frequency at the end is in the auditory range. The instrument is literally measuring a displacement in the same range as many of the things you mention (traffic, mining, ...). A band pass filter will not do.