Paphitis wrote:Pyrpolizer wrote:Ahh, fresh again without too much distortion, back to our little Cypriot forum for some further information, meant for the few who could possibly understand it.
There has been a suspicion (at other forums) that the pings detected by the beacons might be fake because their pulse duration was way out of manufacturer’s specs.
In the end it was proven that without the original signal which by it’s very nature is not even audible to the human ear nobody can draw such conclusion.
a)the signal carries a huge amount of noise
Of copurse there is a large amount of noise. Ships, wildlife (whales, dolphins etc), Submarines, and who knows what else. They filter all the foreign frequencies out.
Pyrpolizer wrote:b)The pings in most instances occur at times the noise is more than the signal itself.
That is always the case when there is a big huge ship over the top.
Pyrpolizer wrote:c)The signal can only be analyzed using specialized software whose spectrogram and audible sounds (as published on video by the Australians) are nothing but an aid to the user of the software.
Yes they do have specialized software specifically designed for this kind of thing.
Pyrpolizer wrote:d)the frequency of the signal as announced is 32.3 Khz instead of the expected 37.5 Khz .This is a big difference by all accounts.
The ELTs change frequency as the batteries get weaker and the signal itself is distorted by a number of environmental factors including water. The Auithorities have already discussed that in detail.
Pyrpolizer wrote:e)It might be impossible to confirm the pitch of the signal with all that distortion even by the analyzer of the original signal using special software. The pitch of the signal together with the frequency and the time intervals are the 3 parameters required to verify beyond any reasonable doubt that it comes from a black box.
They have already looked at all the parameters they need.
Pyrpolizer wrote:f)The Doppler effect principle cannot be used because of the unknown effects of the media (which in this case is water) the background noise, and the huge frequency shift mentioned in "d"
I will leave this to scientists. They are however looking at how the signal fades in and out to gauge possible distance.
Pyrpolizer wrote:g)one set of pings comes at intervals of 1.06 secs which leads to the conclusion they originate from a man made source
Which makes it consistent with a Black Box.
Pyrpolizer wrote:h)There is another set of pings that show up randomly, whose timing is totally irrelevant to the 1.06 multiples
Anything outside this parameter could be a false positive.
Pyrpolizer wrote:i)The frequency of the audible sound that they published ranges from a few Hz to about 20Kz and that is strange.
Anything outside the 3 to 4 KHz range is filtered out.
Pyrpolizer wrote:Because of the above it is possible the pings are the result of harmonics from man made sources other than the MH370 Black boxes.
What man made harmonics?