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Posts Tagged ‘JFK 50th Anniversary’

Air Force One Audio Restoration/Enhancement Process

Friday, November 15th, 2013

Air Force OneA lot of people have been asking how I restored the Air Force One radio transmissions from November 22 1963, right after JFK was shot. Below I have outlined my process with brief explanations about each.

I used a software program from Adobe CS 6 ‘Audition’ for this entire process.

I identified the points in each version of the tape recordings, the LBJ version and the General Clifton version, for edit points before altering the recordings for enhancement.

I began the restoration process by sampling the tape hiss present on the entire recording and reducing with Adobe noise reduction. Next I went section by section and reduced the radio transmission noise which varied from conversation to conversation.

Then I applied equalization and compression filtering to help bring out the conversations. This was also done section by section since each conversation varied in speaking frequencies.  Adobe CS6 has a great tool, the FFT equalization which is very easy to use.

Audio restoration and enhancement is a process. I refer to it as peeling an onion; one layer at a time. If something does not sound right, I go back a step and try a different process. That’s the beauty of digital audio restoration and enhancement.

I am still working on the restoration as time permits and will update the videos posted here. I am hearing more and more of the conversations using critical listening and additional enhancement. Considering how primitive the technology was back then I am very impressed with the sound quality of these recordings. By the way, the General Clifton version is much better sounding and longer then the LBJ version.

Read about how this all started, and you can watch the story on “The Lead” with Jake Tapper on CNN below.

Primeau Forensics Restored Air Force One Recordings from John F. Kennedy Assassination

Tuesday, October 8th, 2013




Passing the Torch-An International Symposium on the 50th Anniversary of the Assassination of President John F. Kennedy will be happening October 17-19 2013 in Pittsburgh. http://www.duq.edu/events/jfk

A while back, Bill Kelly contacted Primeau Forensics and asked Audio Forensic Expert Ed Primeau to assemble and restore the original Air Force One radio transmissions that were recorded the day JFK was assassinated 50 years ago.

According to Primeau, ‘the quality of technology back then was very poor which weighs heavy on understanding the dialogue of the radio transmissions even after restoration’. Then Primeau had an idea, to have Partner Company Primeau Productions create a video which displays the wording on the bottom of the screen displaying the dialogue from the radio transmissions as they occurred.

Primeau sought some authentic footage from a private jet cockpit via a pilot who is a friend of Primeau Productions so the background footage adds an interesting background to the closed caption type text.

For more information on the conference contact:

Deborah G. Jozwiak

320 Fisher Hall
600 Forbes Avenue
Pittsburgh, PA 15282
Email: wechtinstitute@duq.edu
Phone: 412-396-1330
Fax: 412-396-1331




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