Via The New York Post:
The Associated Press has obtained a recording of what some U.S. Embassy workers heard in Havana, part of the series of unnerving incidents later deemed to be deliberate attacks. The recording, released Thursday by the AP, is the first disseminated publicly of the many taken in Cuba of sounds that led investigators initially to suspect a sonic weapon.
Here's the sound:
According to AP, at least 22 Americans are “medically confirmed” to be affected, the State Department says, adding that the number could grow. The attacks started last year and are considered “ongoing,” with an incident reported as recently as late August.