The question is currently closed, so I can't post a new answer. I voted to reopen it, and I've edited the title to focus on the aspect of the question that is not adequately answered by the duplicate.
What got removed from my original was effectively “could a human even hear this in principle?”, with my thoughts at the time being “or would you require an gravitational wave intensity so great that the energy of the gravitational waves would be enough to spontaneously collapse into a black hole?”
400 AU from a (stellar mass) black hole-neutron star merger isn’t going to be that intense, and is therefore implicitly gives me my answer (even if the environment itself would be deadly for other reasons).