9/11 Sounds of Explosions Not being Recorded

Bruno D.

Senior Member.
... It's the explosive nature of WTC 1 & 2 with multi-yon framing sections being ejected laterally at speeds up to 70 mph that reveals them to be controlled demolitions ...

1 - Can you provide a single video from any controlled demolitions around the world showing multi-ton framing sections being ejected laterally at speeds up to 70mph?
2 - Can you provide a single video from 9/11 showing the same intensity of explosion sounds as any other videos from any other controlled demolitions?
 

Christopher 7

Active Member
1 - Can you provide a single video from any controlled demolitions around the world showing multi-ton framing sections being ejected laterally at speeds up to 70mph?
Of course not. The Trade Towers were not normal demolitions. They were designed to look like a gravity collapse.
2 - Can you provide a single video from 9/11 showing the same intensity of explosion sounds as any other videos from any other controlled demolitions?
Reporters mics don't pick up explosions very well because they are eq'd to eliminate low rumble.

This reporter heard an explosion but his microphone didn't pick it up.
Start at 0:16
This reporter heard a huge explosion but his mic barely picked it up.
Start a the beginning.
 

benthamitemetric

Senior Member
Of course not. The Trade Towers were not normal demolitions. They were designed to look like a gravity collapse.
Reporters mics don't pick up explosions very well because they are eq'd to eliminate low rumble.

This reporter heard an explosion but his microphone didn't pick it up.
...

In other words, the “demolitions” of the twin towers didn’t look or sound like any other actual known demolition, and yet they are still somehow obviously demolitions. Right. That doesn’t strike you as just a bit too much of a special pleading?

And do you really believe reporters use special mics when they record actual demolitions? Your EQ argument makes no sense. Stop making up nonsense.
 
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Christopher 7

Active Member
In other words, the “demolitions” of the twin towers didn’t look or sound like any other actual known demolition, and yet they are still somehow obviously demolitions. Right. That doesn’t strike you as just a bit too much of a special pleading?

And do you really believe reporters use special mics when they record actual demolitions? Your EQ argument makes no sense. Stop making up nonsense.
I have done a lot of recording and live gigs. I am familiar with eq'ing mics. The FACT remains; the reporter's mic in the first clip did not pick the explosion that the reporter clearly heard. In the second clip, the reporter heard a huge explosion but his mic barely picked it up.

In addition, over 100 first responders, reporters and survivors said they heard explosions. You have been told that many times so I shouldn't have to post all that again. To contend that they were all wrong can only be described a denial.
 

Jeffrey Orling

Senior Member
There were things exploding as the buildings burned... but they were not bombs or placed demolition devices. Electrical transformers do explode for any number of reasons and when they do they let off quite the boom and perhaps sound like a bomb. This has happened in our neighborhood and it and the first thought is a bomb... but this is an extremely unlikely place for a bomb to be set off. However in the 911 event... there were reported hijacked planes flown into the towers. There was an instant huge explosion in WTC sub station and perhaps in some high voltage transformers in the basement of 1WTC... the one Rodriguez seems to have heard.
What very likely happened is that AA11 impact severed/shorted out the 13.8kv risers going from the sub basement to the upper section of the tower. Circuit protection was not "fast enough" to prevent voltage spikes which would cause transformers to explode. There were explosions in the ConEd wtc7 substation reported at the time of the AA11. But the cause of the explosion was not "known" or reported and so many wrongly assumed "terrorist bomb". And every transformer or gas explosion that day was "perceived" as a terrorist bomb. This is not unreasonable in the midst of the hysteria of the morning.
AE911T never discusses transformers exploding that day... because it obviously undercuts their argument of placed demo devices. Many can be seen and heard on YouTube:
Source: https://www.youtube.com/watch?v=zhq-biENbOY&ab_channel=MykeeRamen

Source: https://www.youtube.com/watch?v=TLgExzj0S00&ab_channel=Redbeard
 

Oystein

Senior Member
RIGHT! They were obviously (for the reasons we have been discussing here) blown up.
Actual explosive demolitions - they look and sound different from the WTC collapses.
Do THEY obviously look and sound like explosive demolitions?

Can you give us an example of what a tall building collapse would look and sound like such that you would agree it does NOT "obviously" look and sound like it was "blown up"?
 

Oystein

Senior Member
Bruno D. said:
2 - Can you provide a single video from 9/11 showing the same intensity of explosion sounds as any other videos from any other controlled demolitions?
Of course not. The Trade Towers were not normal demolitions. They were designed to look like a gravity collapse.
Reporters mics don't pick up explosions very well because they are eq'd to eliminate low rumble.
Then it should be easy-peasy to find videos of actual explosive demolitions where you do NOT hear the explosive charges going off immediately before collapse onset. Please do so!

By the way: the "PENG" of explosive demolition charges is NOT a "low rumble" at all - it is an extremely sharp sound - a shockwave. If someone reports a "rumble", it very certainly is not a demolition charge.

This reporter heard an explosion but his microphone didn't pick it up.
Start at 0:16
At what time was this? Was there any collapse initiated at this time?
If not, I suggest the possibility that the "explosion" he refers to is nothing at all like an explosive demolition charge. With headphone on and volume up, I think I can hear a low rumble for a couple of seconds - i.e. not an explosion at all. Of course it is impossible to know exactly what sound the reporter references.

This reporter heard a huge explosion but his mic barely picked it up.
Start a the beginning.
No. Just no. You entirely misrepresent what this reporter reports!
Here is a word-by-word transcript, with contemporaneous visible events in brackets:

Please note that he does NOT say he HEARD an explosion, no, he describes what he SEES.
Please also note that the reporter's mic, which you claim is "eq'd to eliminate low rumble", picks up the low rumble of the noise of the collapse very clearly and easily. So it appears your claim is straight-out FALSE, at least for this reporter's mic.
And yet, despite THIS mic NOT being "eq'd to eliminate low rumble", it failed to pick up any big explosion BEFORE the collapse was visibly and audibly underway - i.e. no explosion consistent in timing and loudness with explosive demolition.
 

Inti

Senior Member.

Then it should be easy-peasy to find videos of actual explosive demolitions where you do NOT hear the explosive charges going off immediately before collapse onset. Please do so!

By the way: the "PENG" of explosive demolition charges is NOT a "low rumble" at all - it is an extremely sharp sound - a shockwave. If someone reports a "rumble", it very certainly is not a demolition charge.
Quite right. None of the explosions in demolitions I have witnessed sounded like a low rumble. This one was of a tower block where I had previously lived, and I was present that day, though on the other side from this camera position.
Source: https://youtu.be/niBku7gwcFE

Starts at about 0:31 - time stamping link doesn’t work in this case.

The sound on this video actually sounds lower in pitch than it did in reality, so it was high frequency that was partially excluded. “PENG” well describes the hard, short almost metallic sound of the charges.
 

Edward Current

New Member
Longtime lurker and admirer of the Metabunk All-Stars. I could not stay out of this one, however.
Reporters mics don't pick up explosions very well because they are eq'd to eliminate low rumble.

This is bunk. I am an audio engineer. The frequencies on microphones for voice are rolled off no higher than 100Hz, the fundamental frequencies of male voices starting around 80Hz. An explosion — and we are talking specifically about high-brisance detonations here, not any generic explosion — is an extremely broadband source and is not significantly affected by highpass EQ at those settings. Consider the spectral frequency display of a few seconds from the YouTube video titled "Implosionworld Explosive Demolition Compilation 2003" from 0:16–0:18, below. The frequencies are on the right.

Screen Shot 2020-09-26 at 10.53.32 AM.png

There's a simpler reason why reporters' mics did not pick up these explosion sounds: They were just much too quiet.
 

Amber Robot

Active Member
So it was designed to look like it was a gravity collapse but it was obviously blown up? I guess the designers were incompetent.
 

Mick West

Administrator
Staff member
Here's an interesting collection of audio of the same demolition from various distances.
Source: https://www.youtube.com/watch?v=6QI3VhFXYyw

Distances can be estimated by dividing time delay in seconds by five, or by geolocating.

The first one (0:40) is 2.25 miles away, and unfortunately greatly overlaid by crowd noises. But you can hear low load rumble. It's still audible about the same with a 100Hz high-pass. 200hz reduces it to a hishing wooshy noise.

Then at 2:01, there's a shot from around 1/3 of a mile away (1.7 second delay). Entirely audible even if you cut out <500Hz.
 
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Bruno D.

Senior Member.
Of course not. The Trade Towers were not normal demolitions. They were designed to look like a gravity collapse.

In other words: no you can't provide a single video from any controlled demolitions around the world showing multi-ton framing sections being ejected laterally at speeds up to 70mph.

Or even better: no, you can't, because they were not normal demolitions, and were designed to look like a gravity collapse, but failed miserably, and instead they ended up creating explosions that ejected multi-ton framing sections laterally at speeds up to 70mph that could never happen in a regular gravity collapse.

Gotcha.

Reporters mics don't pick up explosions very well because they are eq'd to eliminate low rumble.

This reporter heard an explosion but his microphone didn't pick it up.
...
This reporter heard a huge explosion but his mic barely picked it up.
...

In other words: no you can't provide a single video from 9/11 showing the same intensity of explosion sounds as any other videos from any other controlled demolitions.

Or even better: no, you can't, because reporters' mics don't pick up explosions, or low rumble; and mics from filming crews don't pick up explosions, or low rumble; and amateur cameras don't pick up explosions, or low rumble; and the best possible explosion sounds evidence that can be found among everything that was filmed that day are the descriptions from explosions sounds from reporters, but never the actual sound.

And if you merge both ideas, the explosions capable of ejecting multi-ton framing sections laterally at speeds up to 70mph needs to be a little silent, or similar to a low-rumble, so that the reporters' mics, or any other mics, won't pick up.

Yep.
 
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Rory

Senior Member.
This reporter heard a huge explosion but his mic barely picked it up.
Start at the beginning.
As Oystein pointed out, he's not hearing an explosion, he thinks he's seeing one.

The second reporter in this video is even more interesting to me: he's watching the tower collapse and yet he has no idea it's gone down; rather, he seems to think it's obscured by smoke and isn't sure what's going on.

Many of the eyewitness accounts of that day clearly = confused, sketchy, unreliable, not credible.
 

Mendel

Senior Member.
Uncontrolled explosion, Beirut, August 4th, 2020
Source: https://www.youtube.com/watch?v=BKS0VDbltNU

The smartphone picks it up just fine.

As with a lightning or a thunder-clap, a close-by recording of an explosion has more higher frequencies in it; the further away you get, the more high frequencies are dissipated/attenuated by the air, so a lightning from far away is heard as a low rumbling thunder.
Article:
Frequency dependent attenuation of air (dB) in
30 m distance at different humidity (percent)
RelativeHumidityA.gif


The reporter in the street should be recording a distinctive explosion sound across all frequencies, not a "low rumble".

I believe that the second reporter is at the CNN studio in the Time Warner Center, approximately 4 miles (6.4 km) from the WTC; the speed of sound being ~340 m/s, the sound of the collapse would take ~20 seconds to reach there. They're seeing the collapse before they can hear it. The volume of that sound would be attenuated -36 dB from the distance alone, compared to an observer 300 feet away.
 
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