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May 24, 2012, 07:31:39 AM
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Digital Dictabelt?  (Read 2014 times)

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I was wondering if anyone had some information regarding acoustical analysis done with the dictabelt around 2003. I ran across this BBC article from around 2004 which reads that the original dictabelt from Nov 22 was going to be digitally copied and tests were to be performed to perhaps answer the question of a 4th shot once and for all. The digital reproduction was done by the Lawrence Berkeley National Laboratory with assistance from Leslie Waffen, an archivist at the US National Archives. My question is...Did this digital copy get made and is anyone aware of the test results if any? Ive had no luck at all finding info on this. Gary Mack is quoted in the article and Ive emailed him but haven't had a response. Thanx



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Hi Anthony
Are you sure you have the map of Dealey Plaza correct? I was looking at Mark Henceroth's map of Dealey Plaza in the thread "Occupants position in the limo" and he has the TSBD WAY closer to Elm St. than you do.

Of course, he also calculates the angle from the TSBD to the limo at 6.3°. Is it remotely possible that Mark "altered' the map slightly??

 rofl rofl rofl rofl rofl

I think you are trying to make a point here or at least staying on schedule with making personal attacks on me in every thread, regardless of topic.
Yes. I am sure the distance is correct. 320 feet from the middle of Main to the face of the TSBD. Dealey Plaza was remeasured for me in 1981 by the firm which made the survey map for the HSCA.
The WPA map when they were redesigning Dealey Plaza shows that the middle of Main Street to the face of the TSBD was 320 feet.
I don't know what the Hell Mark thinks he is doing, but it's not research.


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I think you are trying to make a point here or at least staying on schedule with making personal attacks on me in every thread, regardless of topic.
Yes. I am sure the distance is correct. 320 feet from the middle of Main to the face of the TSBD. Dealey Plaza was remeasured for me in 1981 by the firm which made the survey map for the HSCA.
The WPA map when they were redesigning Dealey Plaza shows that the middle of Main Street to the face of the TSBD was 320 feet.
I don't know what the Hell Mark thinks he is doing, but it's not research.


Anthony, lighten up, for God's sake. I think your map is spot on and I'm not trying to criticise you. I was merely using the accuracy of your map to poke fun at Mark's "research".


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Though he'd often say, in his homely way, that he'd "sooner live in Hell" "
~~Robert W. Service~~

"Never have discussions with the monkey when the organ grinder is in the room."
~~Sir Winston Churchill~~

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This website shows that Officer McClain, nor any other motorcycle, was not near the intersection of Houston and Elm when the first shot was fired, at z152, nor at z175 (as the supporters of the acoustic so called evidence claim). The acoustic evidence is bunk.

Everyone should check this out, and see if they still think there was a motorcycle there when the first shot was fired.


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This website shows that Officer McClain, nor any other motorcycle, was not near the intersection of Houston and Elm when the first shot was fired, at z152, nor at z175 (as the supporters of the acoustic so called evidence claim). The acoustic evidence is bunk.

Everyone should check this out, and see if they still think there was a motorcycle there when the first shot was fired.


Can you show us any evidence of a motorcycle as being the carrier of the open microphone? I ask this question because the three tests performed by BB&N to detect engine sounds on the Dictabelt produced negative results.

Interested readers may find a discussion of this issue at the following link.

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Herbert



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This website shows that Officer McClain, nor any other motorcycle, was not near the intersection of Houston and Elm when the first shot was fired, at z152, nor at z175 (as the supporters of the acoustic so called evidence claim). The acoustic evidence is bunk.

Everyone should check this out, and see if they still think there was a motorcycle there when the first shot was fired.


Joe Ive attempted to point this fact out to Tony based on Myers work, which supports the same iron clad video evidence that there is no way McLain could be where he is required to be for this acoustic evidence to hold merit. He is not having it and just says everybody is lieing.  sheeshxx


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« Last Edit: January 22, 2012, 09:42:50 AM by Mike Giampaolo »

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Joe. I've attempted to point this fact out to Tony based on Myers work, which supports the same iron clad video evidence that there is no way McLain could be where he is required to be for this acoustic evidence to hold merit. He is not having it and just says everybody is lying.  sheeshxx


Paul Seaton's website is longer than it needs to be, but it's clear from looking at it that no motorcycle is near the location it has to be, as required by the HSCA acoustic study.

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The scientists who made the original acoustic study declared three things, all of which they were quite certain of:

1. There were 4 shots.

2. They could tell, based on the acoustic signal, where the shots came from, three from the TSBD-SN, and one from the Grassy Knoll. They were certain the shots were within ten feet of these locations.

3. They could also tell, based on the acoustic signal, the location of the microphone that picked up the sound of the gunshots, from around the corner of Houston and Elm streets. Clearly, a motorcycle with the stuck microphone was rounding this corner at the time, picking up the first shot while still on Houston Street and the last shot on Elm Street. So they drew 4 "acoustic circles" on a map, each with a diameter of 20 feet.

The scientists even explicitly stated that there theory can be verified, or falsified, by studying films and photographs, made at the time of the shooting. At each shot, there should be a motorcycle within the corresponding acoustic circle.

If the film showed a motorcycle at that corner, their theory would be supported. If there was no motorcycle, their theory would be proven wrong.

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The problem with the acoustic study, is that there were not motorcycles everywhere. There were four motorcycles just behind the first car, the Presidential limousine. Then, there was a big gap with no motorcycles. The next pair of motorcycles was between the ninth and tenth car, just ahead of "Congressman's Car #1", ridden by Officer McLain and Baker.

And the Robert Hughes film shows Officer McLain in this position. It shows the Presidential limousine rounding Houston and Elm, followed by the other vehicles. Not until the fourth car, LBJ's yellow car, starts rounding the corner of Houston and Elm, does Officer McLain's motorcycle come into view, rounding the corner of Main and Houston.

When Robert Hughes's camera is stopped, the time is equivalent to z160. We can tell this from the Zapruder 160 frame, which shows LBJ's yellow car just starting the turn onto Elm Street. The latest the first shot could have been fired, according to the acoustic study, is z175. And we can see Officer McLain just come into view, at the corner of Main and Houston.

As Robert Hughes shuts off his camera, Officer McLain has the length of that block of Houston Street to travel, he has to go about 180 feet, and has just under a second, to get within that ten foot circle that the acoustic scientists predicted a motorcycle would be in. Clearly impossible.

Officer McLain has to average 153 MPH during the next second to reach the first ten foot acoustic circle, 180 feet away. Beyond impossible. Not even close.

**************************************************


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This website shows that Officer McClain, nor any other motorcycle, was not near the intersection of Houston and Elm when the first shot was fired, at z152, nor at z175 (as the supporters of the acoustic so called evidence claim). The acoustic evidence is bunk.

Everyone should check this out, and see if they still think there was a motorcycle there when the first shot was fired.


Make sure that you only look at one side of the story. Believe whatever garbage you read.


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Paul Seaton's website is longer than it needs to be, but it's clear from looking at it that no motorcycle is near the location it has to be, as required by the HSCA acoustic study.

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The scientists who made the original acoustic study declared three things, all of which they were quite certain of:

1. There were 4 shots.

2. They could tell, based on the acoustic signal, where the shots came from, three from the TSBD-SN, and one from the Grassy Knoll. They were certain the shots were within ten feet of these locations.

3. They could also tell, based on the acoustic signal, the location of the microphone that picked up the sound of the gunshots, from around the corner of Houston and Elm streets. Clearly, a motorcycle with the stuck microphone was rounding this corner at the time, picking up the first shot while still on Houston Street and the last shot on Elm Street. So they drew 4 "acoustic circles" on a map, each with a diameter of 20 feet.

The scientists even explicitly stated that there theory can be verified, or falsified, by studying films and photographs, made at the time of the shooting. At each shot, there should be a motorcycle within the corresponding acoustic circle.

If the film showed a motorcycle at that corner, their theory would be supported. If there was no motorcycle, their theory would be proven wrong.

****************************************

The problem with the acoustic study, is that there were not motorcycles everywhere. There were four motorcycles just behind the first car, the Presidential limousine. Then, there was a big gap with no motorcycles. The next pair of motorcycles was between the ninth and tenth car, just ahead of "Congressman's Car #1", ridden by Officer McLain and Baker.

And the Robert Hughes film shows Officer McLain in this position. It shows the Presidential limousine rounding Houston and Elm, followed by the other vehicles. Not until the fourth car, LBJ's yellow car, starts rounding the corner of Houston and Elm, does Officer McLain's motorcycle come into view, rounding the corner of Main and Houston.

When Robert Hughes's camera is stopped, the time is equivalent to z160. We can tell this from the Zapruder 160 frame, which shows LBJ's yellow car just starting the turn onto Elm Street. The latest the first shot could have been fired, according to the acoustic study, is z175. And we can see Officer McLain just come into view, at the corner of Main and Houston.

As Robert Hughes shuts off his camera, Officer McLain has the length of that block of Houston Street to travel, he has to go about 180 feet, and has just under a second, to get within that ten foot circle that the acoustic scientists predicted a motorcycle would be in. Clearly impossible.

Officer McLain has to average 153 MPH during the next second to reach the first ten foot acoustic circle, 180 feet away. Beyond impossible. Not even close.

**************************************************


Full of false assumptions. The BBN found that McLain would have to go at about 25 MPH to get from the Hughes film position to the Z-160 position.
There is no ten foot circle. You are unfamiliar with the acoustical study which explains why you are here claiming nonsensical things. The window of acceptance is about 9 feet from the microphone position. In geometry that is called the radius. Since you aren't smarter than a fifth grader you don't know that this means that the diameter of the circle would be 18 feet. But the cycle does not have to be within that circle when it picks up the muzzle blast. All it has to do is travel near the microphone at some point while receiving the echoes.
Myers lied about the timing. McLain did not have just one second to cover 180 feet. He had at least 5 seconds.


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