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Title: Video claims shooter dressed as police
Source: [None]
URL Source: https://duckduckgo.com/?q=LAS+VEGAS ... a=videos&iax=1&iai=qMxn7hpXmk4
Published: Oct 8, 2017
Author: Planet X Investigations
Post Date: 2017-10-08 15:41:01 by A K A Stone
Keywords: None
Views: 12458
Comments: 186

Video claims shooter dressed as police


Poster Comment:

Video claims shooter dressed as police

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#57. To: Tooconservative (#56)

Very very unlikely that is the original video.

Yep.

Maybe the Klingons and Lutherans have silenced our intrepid taxi driver, threatening to take away her spicy tacos.

I'm not convinced it was tacos. Burritos are an equally plausible source of flatulent reverberation in Las Vegas.

VxH  posted on  2017-10-09   8:40:56 ET  Reply   Trace   Private Reply  


#58. To: Tooconservative (#56)
(Edited)

 

Cori Langdon October 3 at 8:58pm

Here is my video. It has been edited per the request of the passengers to bleep out their names and end the video before their faces are seen. No other editing has been done.

https://www.facebook.com/cori.l angdon

Looks as clear as the vids I upload to FB from my phone.

VxH  posted on  2017-10-09   9:36:39 ET  Reply   Trace   Private Reply  


#59. To: VxH (#58)

Cori Langdon October 3 at 8:58pm

Here is my video. It has been edited per the request of the passengers to bleep out their names and end the video before their faces are seen. No other editing has been done.

That doesn't mean that Fakebook didn't recompress it. She didn't offer the original footage at all.

When you upload to Fakebook or YouBoob, they create their own versions in various resolutions as I detailed in another post. When YouBoob first started to offer HD videos, they did offer the actual original footage exactly as uploaded. They discontinued that some time back and now re-encode everything. I think Facebook does the same thing.

If the media and all the YouBoobers just grabbed her Facebook video, then it is possible, likely even, that no one has had an actual first-gen copy of her video.

Tooconservative  posted on  2017-10-09   9:43:29 ET  Reply   Trace   Private Reply  


#60. To: Tooconservative (#59)

That doesn't mean that Fakebook didn't recompress it.

Right - but it's probably as close to the "original" source as we're going to get.

If the media and all the YouBoobers just grabbed her Facebook video, then it is possible, likely even, that no one has had an actual first-gen copy of her video

Yep.

VxH  posted on  2017-10-09   9:49:38 ET  Reply   Trace   Private Reply  


#61. To: nolu chan (#40)

I was hiking in the mountains and I yelled, "Hello". Right after that I heard four other people yell 'hello', one after the other. And here I thought I was alone.

misterwhite  posted on  2017-10-09   10:32:39 ET  Reply   Trace   Private Reply  


#62. To: Tooconservative (#30)

That three-missing-windows video is total crap. It could easily be faked.

Notice the windows are completely missing. The shooter's windows were jagged.

misterwhite  posted on  2017-10-09   10:36:01 ET  Reply   Trace   Private Reply  


#63. To: Tooconservative (#53)

And you're just blustering now because you finally realize you've been had by these YouTube scammers like the Niburu/Planet X cultists.

Enter Screen

How was I had when I changed their title which was 100 percent proof to "video says"?

You still were unable to disprove the images and you dodged it like a little girly man.

I think they were police officers who turned around and pointed their guns.

But what was the flash? None of you two pussies dared to refute it. Girlymen.

A K A Stone  posted on  2017-10-09   13:44:39 ET  Reply   Trace   Private Reply  


#64. To: A K A Stone (#63)

Shouldn't you be hiding in your bunker so Planet X doesn't hit you in the head?

Tooconservative  posted on  2017-10-09   13:48:50 ET  Reply   Trace   Private Reply  


#65. To: Tooconservative (#64)

I'm always in my bunker here on Q'onoS. Chancellor Gowron wouldn't have it any other way.

A K A Stone  posted on  2017-10-09   14:07:17 ET  Reply   Trace   Private Reply  


#66. To: Tooconservative (#64)

Regardless of your lame humor. You still haven't told me why those two guys in police uniforms look like they turn around and fire on the crowd.

I'm not saying that is what they are doing and never said that. I just wondered if anyone smarter then me (not you TC, don't make me laugh, i'm thinking of others) knew what was going on in that section of the video.

It is above your pay grade so don't worry about it. Maybe someone else knows since you don't.

A K A Stone  posted on  2017-10-09   14:10:28 ET  Reply   Trace   Private Reply  


#67. To: A K A Stone (#66)

I'm not saying that is what they are doing and never said that. I just wondered if anyone smarter then me (not you TC, don't make me laugh, i'm thinking of others) knew what was going on in that section of the video.

I can't help you. I don't watch kook videos.

Tooconservative  posted on  2017-10-09   14:13:21 ET  Reply   Trace   Private Reply  


#68. To: Tooconservative (#67) (Edited)

I can't help you. I don't watch kook videos.

I know you can't help me. I'm not looking for someone who likes to remain ignorant and boast about their ignorance. The video was uploaded by a person who was really there, unlike you who weren't.

A K A Stone  posted on  2017-10-09   14:20:13 ET  Reply   Trace   Private Reply  


#69. To: A K A Stone (#68)

The video was uploaded by a person who was really there, unlike you who weren't.

No, it was uploaded by known kooks who probably manipulated it. And you.

Tooconservative  posted on  2017-10-09   14:25:19 ET  Reply   Trace   Private Reply  


#70. To: Tooconservative (#69)

No, it was uploaded by known kooks who probably manipulated it. And you.

So they were there? You are misinformed. Which usually isn't the case.

A K A Stone  posted on  2017-10-09   14:27:52 ET  Reply   Trace   Private Reply  


#71. To: VxH (#43)

I used the same speed I used in my other analysis (appended below) - based upon an air temperature of 72 degrees

Then I calculated the difference in time between the last bullet sound (T1) and the corresponding last report sound (T2).

Your arithmetic is fine, your logic is a FAIL.

You failed to answer the question: "Why does that measure the distance from the video taker to the shooter?"

You have still not identified what sounds you refer to.

What is the first sound of a bullet? The initial sound wave as heard at the recording location?

What is the last sound of the bullet? An echo? Another bullet?

In this case, the video taker was 400 yards away from the shooter.

The sound wave originated at position a and traveled 400 yards to get to the videotaker at position b. That took ~1.07 seconds for the sound to travel.

If you measure the first sound of the bullet as when it traveled faster than sound, and then struck something or whizzed past making a sound, your ~1.07 second measurement is impossible as the elapsed time difference would be the time it took the sound wave to travel (~1.07s) minus the time it took the bullet to travel. Your calculation as the bullet traveling at aproximately the speed of light.

The bullet and the sound both travel the same path at the same time, at different velocities. As the sound takes ~1.07 seconds, the difference in their arrival times cannot be ~1.07s.

Two cars travel an 80 mile strip. One travels 80 mph and crosses the finish line in 1 hour. The other travels 40 miles an hour and crosses the finish line in 2 hours. If the slow car went half the speed of the faster car, and the time difference was 1 hour, the distance can be calculated as the velocity of the faster vehicle (80 mph) divided by the velocity of the slower vehicle (40 mph) time the time difference (1 hour).

Your calculation is good arithmetic but gibberish logic. ~1.07 seconds is simply the time for sound to travel from Mandalay Bay to the target recording location.

An echo of a sound originating at position a results from the sound wave traveling the distance originating point a to recording position b, proceeding an unidentified distance to the reflective surface c, and returning to position b. The sound must arrive/leave recording position b at ~1.07 seconds, travel to a reflective surface, and return. The elapsed time must exceed 1.07s.

In measuring the distance of a lightning bolt, you can use the sighting of the lightning bolt, the light traveling at the speed of light, as the originating time of the initiating event. You can count until the slower moving sound wave arrives, and calculate distance to the lightning. This is because the velocity of light is so great, its travel time over relatively short distances is negligible.

Unfortunately, even with a Boy Scout merit badge, an audio recording from 400 yards away does not identify distance of the originating event. Bullets do not travel at the speed of light, or anywhere near it.

The way you know the distance from the Mandalay Bay to the event location is by measuring it.

nolu chan  posted on  2017-10-09   18:52:32 ET  Reply   Trace   Private Reply  


#72. To: Tooconservative (#44)

Unless it is fake.

How do you know that that is the original video? I haven't found an original source of it.

The Mandalay Bay is a public location that is clearly documented by, among others, Google. For the geography of the location, it does not appear necessary to present a half-dozen sources to verify that the building is situated as it is, where it is. There is nothing controversial about the layout of the land.

I have yet to see any depiction of Mandalay Bay without an entrance and a taxi stand, but if you know of one, please present it.

nolu chan  posted on  2017-10-09   19:00:38 ET  Reply   Trace   Private Reply  


#73. To: Tooconservative, nolu chan, aka stone (#46) (Edited)

I'm making an error by treating the T1 as the firing time.

Need to update that to incorporate the muzzle velocity....

Ok, so I was on the right track.  I found this research paper:

[Using Sound of Target Impact for Acoustic Reconstructions of Shooting Events]

http://www.btgresearch.org /impactsound.pdf

"For example, if the microphone is adjacent to the victim (such as a 911 recording might be), the equation for determining the distance becomes: t=tb - ts= d/Vb-d/Vs If the muzzle blast duration obscures the sound of the bullet hitting the target, simple inspection of the sound waveform is insufficient. "

I took their formula, built a spreadsheet,  and plugged in 223 balistic data generated via shooterscalculator.com:

Important to note:

* Presently we don't have information regarding specificaly which weapons and amunition were used.  So the ballistic data was generated with a guestimate 223 configuration.

* My DAW (Sonar) doesn't appear to have the capability of capturing a sound spectrogram like the ones the authors of the study produced; but after reading their commentary on the blast noise obscuring impact noise, I filtered the crowd noise, and filtered/looked alternately for the report and then the high energy impact sounds - and I revised T1 and T2 accordingly.

More accurate results could possibly be obtained if the corresponding burst sequence on the Taxi-Driver video is identified and aligned, as the taxi-driver's audio contains only the muzzle blast and echo.  It doesn't have the crowd and impact noise to obscure the muzzle events.

VxH  posted on  2017-10-09   19:50:48 ET  (1 image) Reply   Trace   Private Reply  


#74. To: nolu chan (#71) (Edited)

{ blah blah blah }

You didn't read this...

https://libertysflame.com/cgi-bin/readart.cgi? ArtNum=53025&Disp=46#C46

...before that screed did you.

:-p

VxH  posted on  2017-10-09   20:04:13 ET  Reply   Trace   Private Reply  


#75. To: nolu chan, VxH (#71)

Unfortunately, even with a Boy Scout merit badge, an audio recording from 400 yards away does not identify distance of the originating event. Bullets do not travel at the speed of light, or anywhere near it.

You're wrong. He is adjusting for the speed of sound on the night in LV. The speed of sound is 1100 feet/minute as a decent estimate anywhere (1,087 ft/s more accurately) but he is correcting for altitude and weather conditions. This has nothing to do with speed of light since the muzzle flashes weren't visible from the concert area in any video I've seen.

If the GPS position is being continuously recorded or if the people recording at the concert (hundreds or thousands) were recording video, you can readily determine their position and distance from the shooter pretty easily, just based on the time at which the sound of gunshots arrive, knowing the distance of their source. They can only be described as a portion of an arc, bounded by the concert area rectangle, that constitutes a circle around the shooter's location in the hotel. That's a pretty sound way to determine a fixed location.

This is true of all these A/V recordings of the event. You can determine very accurately their location from the video and the audio timing, even more so if a bullet flies past their camera.

VxH does have a sound method for analysis but only if he can gather enough A/V recordings from the concert and anywhere else, like the taxi driver. I am curious that we have seen no reporting that police requested the concert goers to upload their videos from that night. Maybe the sheriff and the FBI have really dropped the ball on this. Usually, the FBI is pretty sharp on audio lab stuff.

Tooconservative  posted on  2017-10-09   20:08:37 ET  Reply   Trace   Private Reply  


#76. To: Tooconservative (#75)

we have seen no reporting that police requested the concert goers to upload their videos from that night

Grossly uninformed again.

A K A Stone  posted on  2017-10-09   21:14:06 ET  Reply   Trace   Private Reply  


#77. To: VxH, nolu chan, buckeroo (#1)

Does your image represent your Klingon teleportion theory?

A K A Stone  posted on  2017-10-11   0:36:35 ET  Reply   Trace   Private Reply  


#78. To: VxH (#42)

A K A Stone  posted on  2017-10-11   0:36:57 ET  Reply   Trace   Private Reply  


#79. To: A K A Stone (#77)

Where is Mr. Alien Conspiracy.. err I mean Mr. HealthGuy's DATA?

Also, is he misinterpreting the supper-sonic cracks of bullets passing by as "pavement hits"? - probably.

VxH  posted on  2017-10-11   9:15:35 ET  Reply   Trace   Private Reply  


#80. To: A K A Stone (#77)

I don't believe this crackpot's lamebrain hypothesis. He is claiming verifiable acoustic signature analysis based on somebody's cell phone audio capture that is not controlled in anyway.

BULLSHIT.

buckeroo  posted on  2017-10-11   18:54:02 ET  Reply   Trace   Private Reply  


#81. To: Tooconservative, VxH (#75)

You're wrong. He is adjusting for the speed of sound on the night in LV. The speed of sound is 1100 feet/minute as a decent estimate anywhere (1,087 ft/s more accurately) but he is correcting for altitude and weather conditions. This has nothing to do with speed of light since the muzzle flashes weren't visible from the concert area in any video I've seen.

He is absolutely wrong and just bullshitting again. Your observations are irrelevant to his claim being accurate. His claim is 100% impossible.

At #42, Vxh compares two times from the Taxi Driver video:

An analysis of two sequential burts of gunfire between:

["Taxi Driver Video" the Zapruder Film of the Las Vegas shooting UNCUT / UNEDITED]

https://www.youtube.com/watch ?v=mBbOFwWquAw&feature=youtu.be&t=1m7s

and

https://www.youtube.com/watc h?v=mBbOFwWquAw&feature=youtu.be&t=1m24s

At #43, citing #42, he claims a total distance of 1208.80 feet.

He is measuring distance of sound, not light/bullet speed or travel distance to a target.

If, as claimed, the total distance for the sound is 1,208.80 feet, that includes the echo time according to his own graphic in the same post.

His graphic indicates that the total distance is twice the echo distance, or the echo distance (presumably unobstructed) is half the total distance.

He adjusted the distance by 100%.

This purports to be from the taxi video. The sound of the gunshot was recorded almost immediately. The recorded returning sound is from an unknown reflecting distance.

If the reflecting surface was plucked from his butt to be the bandstand, the sound would have traveled 1208 feet to the bandstand, and 1208 feet back to the taxi, if the path back at ground level were unobstructed.

You cannot adjust to a 1,208 foot total distance, unless the sound turned around and came back unobstructed at 604 feet. Unless the sound somehow returned at the speed of light, instead of the speed of sound, the total distance must be double the 1,280 feet that he claimed. He is again incapable of describing the data on his own graphic.

Of course, the sound could have bounced off something 640 feet away and come back to the taxi. The Reflecting surface is unknown. What sound cannot do is zing into something 1,280 feet away, and come back from that point, and travel a total distance of 1,280 feet.

nolu chan  posted on  2017-10-12   16:34:10 ET  (1 image) Reply   Trace   Private Reply  


#82. To: nolu chan (#81) (Edited)

You're putting your words in his mouth.

Nice straw man you've got there.

Tooconservative  posted on  2017-10-12   16:45:39 ET  Reply   Trace   Private Reply  


#83. To: nolu chan (#81) (Edited)

What sound cannot do is zing into something 1,280 feet away,

SMH.

Attention to detail isn't your forte.

Neither 1280 nor 1208 are on the graphic

What does this mean?

VxH  posted on  2017-10-12   17:02:17 ET  (1 image) Reply   Trace   Private Reply  


#84. To: buckeroo (#80) (Edited)

He is claiming verifiable acoustic signature analysis based on somebody's cell phone audio capture that is not controlled in anyway.

Even if the audio capture hasn't been altered there are still parameters required to make the ballistic calculations to "prove" his conclusion of a second shooter.

http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi

Nobody knows what weapon or ammunition was used - so any attempt to fill in those parameters is, at best, only a guess.

VxH  posted on  2017-10-12   17:06:19 ET  Reply   Trace   Private Reply  


#85. To: VxH (#74)

You didn't read this...

As I can do simple calculation, unlike you, I need no additional source to discover the bullshit.

Sound cannot travel 1280 feet to a target and come back to the taxi, and travel a total distance of 1280 feet. Not even a super genius can make sound do that. But that is what you claimed, that the sound traveled a total distance of 1280 feet, based solely on the taxi driver recording.

nolu chan  posted on  2017-10-12   17:23:24 ET  Reply   Trace   Private Reply  


#86. To: VxH (#83)

What does this mean?

It means that total distance the time traveled is two times the echo travel distance. T1 on the taxi recording is almost instantaneous after the shot, a very short travel distance. Then the sound traveled 1208 feet to the target area, and at least 1208 feet back (unobstructed). Do arithmetic much?

The total distance will be double the distance if unobstructed and reflected by something at the target area straight back to the taxi. If the sound travels another mile and gets reflected back from a distant building, it would take even longer.

nolu chan  posted on  2017-10-12   17:31:46 ET  Reply   Trace   Private Reply  


#87. To: nolu chan (#86) (Edited)

No, it means the number "1208" (and 1280) isn't referenced by that graphic because the audio data on that graphic pertains to a completely different discussion of a completely different audio data set.

VxH  posted on  2017-10-12   17:44:22 ET  Reply   Trace   Private Reply  


#88. To: nolu chan (#86) (Edited)

total distance will be double the distance

What is 2612.57 / 2?
What is 7369.77 / 2?

This is an open book quiz. The answers are ECHO'd on the graphic.

VxH  posted on  2017-10-12   17:54:49 ET  Reply   Trace   Private Reply  


#89. To: Tooconservative (#82)

You're putting your words in his mouth.

Nice straw man you've got there.

No strawman or putting words in his mouth.

Here are his exact words.

At #42 he stated, all in reference to the Taxi Driver video:

T1: Time from start of video (1minute N seconds) at the time of the last shot in the burst.
T2: Time from the start of the video (1minute N seconds) at the time of the echoed sound event corresponding to T1.
TempF: the air temperature (72 degrees F)
FPS: 1130 ft per second -- The speed of sound at 72 degrees F
Elapsed Time: T2 minus T1, the number of seconds between the last shot, and the echo of the last shot in each burst.
Total Distance: Elapsed Time * FPS = the total distance traveled between T1 and T2.
Echo Distance = The distance the echo traveled from the aiming point back to the point of origin.

T1 is at the taxi. T2 is out and back and also recorded at the taxi.

Echo distance is NOT the distance traveled from the aiming point to the point of origin. It is the time between T1 as recorded at the taxi, and T2 as recorded at the taxi. T1 and T2 are derived solely from the recording at the taxi, and do not tell either the point of origin or the point of aim.

T2 could have reached the taxi by being reflected off anything the sound wave hit.

If the distance between the taxi and the target were 400 yards, then for the sound to have come from the target area back to the taxi would require a total travel of 800 yards.

At #43, he claims, in refrence to T1 and T2 on the taxi recording: "Total distance:
1208.80"

T2 - T1 is the difference in the time of arrival at the taxi, and the time to travel to a reflective surface and to make the return trip to the taxi. If that indicates the total distance sound traveled of 1280 feet, the sound would have to have been reflected from not more than 640 feet away.

#42. To: nolu chan, A K A Stone, Tooconservative, Klingon Ambassador (#40) (Edited)

>>What do you mean by report, if not an echo?

As any Boy Scout with one of these...

...should know:

https://duckduckgo.com/? q=An+explosive+noise%3A+the+report+of+a+rifle

>>And just how did you calculate such a remarkable result for distance? { blah blah blah wikispew}

I used the same speed I used in my other analysis (appended below) - based upon an air temperature of 72 degrees

Then I calculated the difference in time between the last bullet sound (T1) and the corresponding last report sound (T2).

T2-T1 = time the  report traveled = 1.07

1.07 * FPS of 1130.8 = 1208.8

==========================


An analysis of two sequential burts of gunfire between: 
["Taxi Driver Video" the Zapruder Film of the Las Vegas shooting UNCUT / UNEDITED]
https://www.youtube.com/watch ?v=mBbOFwWquAw&feature=youtu.be&t=1m7s
and
https://www.youtube.com/watc h?v=mBbOFwWquAw&feature=youtu.be&t=1m24s
===============  
T1: Time from start of video (1minute N seconds) at the time of the last shot in the burst.
T2: Time from the start of the video (1minute N seconds) at the time of the echoed sound event corresponding to T1. 
TempF: the air temperature (72 degrees F) 
FPS:   1130 ft per second -- The speed of sound at 72 degrees F
Elapsed Time:  T2 minus T1, the number of seconds between the last shot, and the echo of the last shot in each burst. 
Total Distance:  Elapsed Time * FPS = the total distance traveled between T1 and T2.
Echo Distance  = The distance the echo traveled from the aiming point back to the point of origin.
===============

Conclusion:  Burst B is NOT two weapons being fired simultaneously.  It is one weapon being fired at a more distant target.  The longer distance, observable in the period between Burst B's T1 and T2, manifests a corresponding longer period of reverb.  It is the reverb that is being incorrectly interpreted as a second weapon (and second shooter) firing at the same time.

Research resources:
https://www.google.co m/search?biw=1544&bih=856&q=Forensic+Acoustics+gunfire
http://www.physic sclassroom.com/mmedia/waves/er.cfm
https://www.timeanddate.com/weather/usa/las- vegas/historic
http://www.csgnetwork.c om/soundspeedcalc.html

VxH  posted on  2017-10-08   21:29:32 ET  (3 images) Reply   Trace   Private Reply  


#43. To: All (#42) (Edited)

 
T1T2Elapsed TimeTotal Distance
17.68965518.7586211.0689661208.80

Here's a snapshot with increased decimal precision and less rounded confusion :-}

VxH  posted on  2017-10-08   21:51:22 ET  Reply   Trace   Private Reply

nolu chan  posted on  2017-10-12   18:00:42 ET  (3 images) Reply   Trace   Private Reply  


#90. To: VxH (#88)

This is an open book quiz. The answers are ECHO'd on the graphic.

You are just yukon being yukon. This is not a quiz. Consider it your final exam. You FAILED.

If the distance from the taxi to the point the sound was reflected back is 400 yards, the sound had to travel a total distance of 800 yards, or about 2400 feet.

Keep digging. With yourself for an expert source, it is no wonder that your conclusion is impossible bullshit.

If T2 - T1 at the taxi were to indicate a total distance of sound travel of 400 yards, the sound went 200 yards to get to a reflective surface and 200 yards to come back to the taxi.

nolu chan  posted on  2017-10-12   18:08:29 ET  Reply   Trace   Private Reply  


#91. To: Tooconservative, VxH, A K A Stone (#75)

I am curious that we have seen no reporting that police requested the concert goers to upload their videos from that night. Maybe the sheriff and the FBI have really dropped the ball on this.

Who is we?

https://www.cnbc.com/2017/10/02/shooter-las-vegas-strip-police.html

Deadliest shooting in modern US history leaves at least 59 dead, 500+ injured in Las Vegas

Arjun Kharpal and| Michael Sheetz
CNBC
Published 2:11 AM ET Mon, 2 Oct 2017
Updated 1:53 PM ET Tue, 3 Oct 2017

[Excerpt]

The FBI requested that anyone with video or photos regarding the shooting call 1-800-225-5324.

nolu chan  posted on  2017-10-12   18:11:37 ET  Reply   Trace   Private Reply  


#92. To: VxH, Tooconservative, A K A Stone (#73)

* My DAW (Sonar) doesn't appear to have the capability of capturing a sound spectrogram like the ones the authors of the study produced....

Regarding your Digital Audio Workstation (DAW) for music, you might indicate what the abbreviation stands for, and with Sonar, you might indicate that it is a company brand name, and does not relate to SONAR.

Sonar DAW available starting at $49.95.

nolu chan  posted on  2017-10-12   18:14:27 ET  Reply   Trace   Private Reply  


#93. To: VxH, Tooconservative (#47)

There is also a noticeable lack of muzzle flashes from the 32nd floor.

There is a video (somewhere in the haystack now) that has audio of what sounds like several single hp rifle cracks at the start of the shooting - presumably at the fuel tanks.

Initial shots at 3:12.

Las Vegas Shooting First Actual Shots - Rare

Tall Ace of Spades
Published on Oct 7, 2017

Most footage doesn't capture the real, initial, non automatic shots shown here that the shooter probably used as test shots before using the bump stock and continuous fire when the next song starts. People are clearly trying to leave the scene shortly after the initial shots which start at 3:12.

nolu chan  posted on  2017-10-12   18:23:10 ET  Reply   Trace   Private Reply  


#94. To: A K A Stone, TooConservative (#0)

Regarding the video referenced by this thread: "Video claims shooter dressed as police"

This research paper - http:// www.btgresearch.org/AcousticReconstruction02042012.pdf describes, as part of their methodology, using an audio spectrogram to differentiate between impact sound and muzzle report sound.

The spectrogram capabilities of my DAW are very limited so I looked around for a free utility and, not finding anything suitable, decided to build my own utility for creating a spectrogram. 

Here's what I'm seeing in the relevant section of audio referenced in the  "Video [that] claims shooter dressed as police".

* This audio was filtered to remove as much of the crowd noise as possible.
* Lower frequency sounds (the muzzle reports) are graphed at the top - higher energy sounds towards at the bottom.
* More work to be done adding time and frequency indexes, zooming, anotating etc but it looks promising.

This is just a progress report. I will document the complete methodology as time allows.

VxH  posted on  2017-10-12   18:35:33 ET  (1 image) Reply   Trace   Private Reply  


#95. To: nolu chan (#89) (Edited)

Yep. You've already demonstrated you can cut and paste.

Two completely different sets of sound events and data being discussed and confused there.

Now again - per the data in my graphic:

What is 2612.57 / 2?
What is 7369.77 / 2?

This is an open book quiz. The answers are ECHO'd on the graphic.

VxH  posted on  2017-10-12   18:38:36 ET  Reply   Trace   Private Reply  


#96. To: VxH (#95)

Yep. You've already demonstrated you can cut and paste.

Two completely different sets of sound events and data being discussed and confused there.

yukon, you have derived T1 and T2 from the Taxi recording. The difference in the times does not reveal point of origin or point of aim. The difference in the two times can be used to derive the length of time for sound to travel to a reflective surface and return. A total distance of 1,280 feet would be for a round trip. Half of that would put the reflective point at 640 feet, and your bullshit would show a shooter midway between the taxi and the taxi and the music venue. FAIL.

nolu chan  posted on  2017-10-12   19:03:53 ET  Reply   Trace   Private Reply  


#97. To: nolu chan (#96)

Where are you getting 1,280 from?

VxH  posted on  2017-10-12   19:05:07 ET  Reply   Trace   Private Reply  



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