Ghostroid Paranormal Detector

Store review

Android version of Pocket Ghost paranormal detector. Sub/supersonic and
audible IIR filters calculate the ParaNormal Quotient(PNQ) at your location.

An essential tool for the aspiring or professional ghost hunter!

Theory of Operation

It has been reported that paranormal activity is evidenced by sounds
inaudible, or barely audible, to the human ear. Animals, whose hearing is more
acute at higher frequencies than ours, are able to detect supersonic sounds,
generally above 12-15 kiloHertz or so. For example, dogs are reported to
behave oddly during supernatural events. Sounds of very low frequency, less
than a hundred Hertz or so, are normally felt rather than heard by humans. The
built-in microphone circuitry in most handheld devices is designed to detect
frequencies in the audio range, but there is some residual response from the
circuitry at the very low (subsonic) and very high (supersonic) frequencies.

Ghostroid uses fast software-based Infinite Impulse Response (IIR) filters to
measure the level of sub- and super-sonic sound pressure waves arriving at the
microphone. It also measures the audible sound level. The three ranges are
shown on the Ghostroid display via three meters, which move dynamically and
are updated several times a second. The Para Normal Quotient (PNQ) is
calculated from a formula that sums the sound levels in the sub- and super-
sonic ranges, and subtracts the audible range value. This yields a number
which increases as the sub- and super- frequencies (which are difficult or
impossible for us to hear) increase, as compared to the audible frequencies.

The PNQ value is shown by a set of concentric bands at the centre of the
display. High PNQ values may be caused by a variety of events: Low frequency
rumbling (e.g. from heavy trucks or machinery), High frequency noises (e.g.
dog whistles, or keys jangling) as well as Supernatural phenomena (please
don't drop your Android when you run away in fright!)

Ghostroid is a port to Android of the well-established "Pocket Ghost"
application for Windows Mobile. Although I personally remain sceptical about
the existence of paranormal activity, and the effectiveness of this
application to detect it, I have received several reports over the years of
Pocket Ghost being successfully used by paranormal investigators. Here are a
couple of quotes:

1) "I have used the pocket ghost program on my I-mate Jasjam and in all cases
the Sub-sonic and Super-sonic reading peaked at 85 to 90 and did not drop down
until the visions (or what ever they were) had gone."

2) "I have seen your program successfully used by a professional
parapsychologist during an investigation in London."

3) "I am a member of several paranormal groups and investigate the most
paranormally active sites within the U.K. On one such investigation a
parapsychologist was using your 'Pocket Ghost' to great effect."

Store rating

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97 reviews

Last update

Feb. 15, 2013

Ghostroid Paranormal Detector

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