In 2001, scientist Donald B. Thomas published an article in Science and Justice which re-ignited the debate on the "acoustics evidence" in the Kennedy assassination. "Study Backs Theory of ‘Grassy Knoll’: New Report Says Second Gunman Fired at Kennedy” wrote the Washington Post. Thomas refuted those who had claimed to debunk the work of the House Select Committee on Assassinations, whose acoustic scientists had found that a shot indeed did come from the "grassy knoll."
In this new book, published by the Mary Ferrell Foundation, Thomas goes far beyond the acoustics, tying together all the scientific evidence in the JFK assassination case into a coherent whole. His conclusions may surprise "lone-nut" adherents and conspiracy advocates alike. Hear No Evil is unique in its mastery of detail and its clear-eyed pursuit of the truth.
Dictabelt on which gunfire in Dealy Plaza was recorded.
DIG DEEPER: HEAR NO EVIL RESOURCES
Reports and Documents on the Acoustics
HSCA Report, Volume VIII. The first half of volume VIII of the HSCA's report contains the reports on the acoustics analyses.
Report of the Committee on Ballistics Acoustics. This report of the so-called "Ramsey Panel" was issued in 1982, a few years after the HSCA's report, and attempted to refute the HSCA's work.
HSCA Report, Volume V: 12/29/1978 Hearings. Volume V contains hearings conducted by the HSCA on December 29, 1978, a few months after the September hearings. These special hearings were used to present the acoustics analysis.
Reviews of Hear No Evil
Hear No Evil, reviewed by Martin Hay on the CTKA website.
Essays by Don Thomas
Overview and History of the Acoustical Evidence in the Kennedy Assassination Case is a 3-part essay published by the MFF, in which Thomas describes the history and science of the acoustics, along with the challenges to it.
Echo correlation analysis and the acoustic evidence in the Kennedy assassination revisited by Don Thomas. This is the 2001 paper that revived debate about the acoustics.
Hear no Evil: The Acoustical Evidence in the Kennedy Assassination is a discussion of the acoustics evidence intended for a more general audience.
Crosstalk: Synchronization of Putative Gunshots with Events in Dealey Plaza is the text of a talk given by Don Thomas at the 2002 JFK Lancer November in Dallas conference.
Impulsive Behavior: The CourtTV - Sensimetrics Acoustical Evidence Study is Thomas' answer to the 2003 Court TV show featuring an analysis by Sensimetrics Inc.
Map showing microphones at 18-foot intervals in Dealey Plaza during 1978 acoustic tests, highlighting the 5 microphones which matched echo patterns.
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Other Essays on the Acoustics Evidence
The Acoustic Evidence in the Kennedy Assassination by Michael O'Dell. O'Dell is one of the prominent critics of the acoustic analysis done by the HSCA and Thomas.
Double Decker by Stephan Barber. Barber noticed the occurrence of crosstalk between two channels of the police recordings, and argues that the crosstalk proves that the impulses on the recording can't be Dealey Plaza gunfire.
Interviews with the Author
Unredacted Episode 4 - Interview with Donald Thomas in 2006.
Black Op Radio - Interview with Donald Thomas, 15 Sep 2010.
Don Thomas Presentation on the Acoustics Evidence
These 3 video clips are taken from a presentation on the acoustics evidence given by Don Thomas in San Francisco in 2006.