FRONTLINE Editor-in-Chief and Executive Producer Raney Aronson-Rath sits down with journalists and filmmakers for probing conversations about the investigative journalism that drives each FRONTLINE documentary and the stories that shape our time. Produced at FRONTLINE’s headquarters at GBH and powered by PRX. The FRONTLINE Dispatch is made possible by the Abrams Foundation Journalism Initiative.
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1. The first recording was made at 12:30 a.m. on November 30 by a resident who lives at the southern edge of the neighborhood. He used a digital camera to capture the sound, which can be heard faintly here. (Headphones recommended) 2. The November audio was analyzed by University Rochester professor Ming-Lun Lee, who extracted and enhanced the audio to reveal a conspicuous tone with a frequency of about 315 hertz. 3. The third sound file is a recording made at 12:30 a.m. on May 1 in the central part of the neighborhood. This is Lee’s enhanced version of an obvious 315-hertz tone. 4. The fourth recording was made on May 7 at 7:40 p.m. in the central part of the neighborhood. This is Lee’s enhanced version of an obvious 315-hertz tone.
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