Although the general feeling is that this is an obvious fake, I'll post this amateur analysis anyway. Some of the points have already been pointed
out, and acknowledgement to each person who noticed it first.
1. This is not a traditional “recorder to PC” file.
The stream is in “perfect stereo”. This only confirms that the clip has in fact been edited or enhanced.
This shows the two channels from time 0:03 to 0:11. A mono-stream (which one would expect from a standard hand-held recording device) wouldn’t have
2 different channel waveforms.
2. Comparison 1 – Dog A
- Sample Time 0:04-0:06
- Sample Time 0:10-0:12
- Sample Time 0:16-0:18
All 3 barks are of from the same dog a couple of seconds apart, and are exactly 2 seconds in length each.
Normalized Frequency Analysis between the three barks.
Yellow = Bark1
Red = Bark2
Green = Bark3
If you take a careful look you’ll see that a Frequency analysis of the three sample clips shows exactly the same frequency. It is actually so close
to each other that you can barely see the red line and green line. Also – interesting enough the dog’s bark is exactly 2 seconds in all 3
3. Helicopter and police car
Sample Time: 1:12 to 1:27 Sample was noise reduced and wave amplitude reduced.
Concerning the “approaching” helicopter sound: It does “appear” as if from nowhere.
It arrives – in the sample clip at approx. 0:02 and takes 6 seconds to go to “full amplitude” i.e. at its closest to “the recorder” at
approx 0:08 seconds. No amount of amplification revealed the sound of a helicopter prior to 0:02 seconds.
Again it was lovely stereo. On my 5.1 surround sound it actually sounded as if the helicopter was circling me.
We can say the same about the police car. (Policecar.wav
) Sample Time: 1:27 - 1:37 with noise
reduction. With the police car it’s even more obvious. The siren comes out of nowhere. We all know that the sound should be distant and become
louder as it approaches. No rocket science. Interesting enough, as the vehicle comes to a stop with screeching tires, the siren still goes louder as
if the car is still approaching. And we have screeching sound but no sound of an engine? Surely when a car goes fast enough to create a screeching
sound when it brakes, we should be hearing an engine hard at work?
Also note that at approx 0:03 seconds (of the sample clip – (tires.wav
) there is again
screeching tires – not only don’t we hear the car approach but we also don’t hear the sound of an engine. Just screeching tires. Funny that.
(If you can’t hear it, let’s add a low frequency filter. This is at the 1:39 mark.
4. Automatic rifle
A simple comparison between the two bursts of automatic gunfire leads us to believe that they sound exactly the same. They are both exactly 1 second
long – on the millisecond.
A frequency analysis (comparison between the 2) shows that they are again exactly the same.
We can argue that a gun would most probably create the same sound each time it is fired?
Interesting enough the sound of the gunfire is louder than that of the helicopter – especially if the shots were fired from the helicopter as
If I can make a personal comment on the second set of shots (supposedly that from ground forces) which may be that of a handgun, reminds me of the
shots you would hear in those old cowboy movies.
[edit on 16-5-2006 by Gemwolf]