How To Be “Almost Sure” That You’Ve Captured An EVP
To gain more certainty that you’ve captured a real ambient EVP you need to analyze the track and it’s spectrum.
This exclusively regards the usage of digital recorders and not a ghost box.
I haven’t talked in a technical way for what concerns electronic voice phenomena, hence you can expect me to be more formal in this article.
I used to limit myself to saying that EVPs form out of the white noise either from a digital recorder or a from a radio.
We know that the human hear can listen to frequencies that vary between 20Hz and 20kHz (20,000).
Hz is the abbreviation for hertz which is the international standard unit measurement for frequency.
This range is to be taken as a given, it is also true that with the aging process some frequencies cannot be listened to anymore. What I used to be able to listen to when I was 7, now I unfortunately can’t listen to anymore.
It’s not that I’m becoming deaf, it’s just a natural degradational process that almost always take place (with just a few exceptions).
Making a distinction between ambient sounds and EVPs
Now, as an almost 60 years old researcher, if I were to be accompanied by a 20 years old, what can happen is that a direct voice or a contamination might present itself and I might not be aware of it, while the 20 years old should.
Normally an EVP is between the beginning of the audible and the sub-sound, within 15 and 25 hz.
In some cases it can form also between the audible and the ultra-sound, around 19,000 to 21,000 hz.
This requires that your digital recorder needs to have a sensitivity that contains these frequencies, otherwise they might be missed.
On the other hand you need to be sure that no contamination or direct voice was emitted when you were recording. Which brings out the inherent issue that we have concerning the deterioration of our hearing apparatus.
To be sure that you have captured and EVP it is mandatory that you take a look at the audio spectrum.
There is no other technical way.
Also, quite honestly we are very far away from defining the origin of an EVP, we can only limit ourselves to saying that they do exist and that they are a paranormal phenomena as much as they are real.
This is a simple test to show you how hearing works. Use headphones. Try to do the same test along with a younger or older person than you and write down at which frequency you start hearing something and when you stop. I start to hear something around 80 hz and can’t hear anything beyond 14,000 hz.
Yet although I may be able to recognize an EVP just by hearing it, experience taught me that no EVP is the same, an EVP can have peculiar and extremely rare features that might give me troubles in recognizing it, especially if sentient and not residual.
Our loved GhostArk is going to have two omnidirectional microphones tried and tested to have an actual minimum sensitivity starting from 15 hz, which is sub-sound, which is not audible no matter the age.
And trust me that is not something to be taken lightly.
