The title of the article is incomplete. It should read > An “acoustic metamaterial” that can cancel 94 percent of sound _at one frequency_. I don't see how th

The title of the article is incomplete. It should read > An “acoustic metamaterial” that can cancel 94 percent of sound _at one frequency_. I don't see how that could counter the turbulence generated by a jet engine. Maybe that was just the journalist getting ahead of themselves.