Forums

 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   ProfileProfile   Log in to check your private messagesLog in to check your private messages 
Poltergeist raps

 
Post new topic   Reply to topic    Fortean Times Message Board Forum Index -> Ghosts - Poltergeists and entities
View previous topic :: View next topic  
Author Message
norton51Offline
Great Old One
Joined: 18 Sep 2007
Total posts: 130
Gender: Unknown
PostPosted: 02-09-2010 15:51    Post subject: Poltergeist raps Reply with quote

In the latest SPR Joyrnal there is a paper looking at the acoustics of poltergeist raps taken from various recordings made during the cases (see http://www.spr.ac.uk/main/news/colvin-acoustic-properties-poltergeist-rapping).

The main finding is that poltergeist raps apparently typically take longer to reach a peak sound intensity compared to recordings of similar surfaces being deliberately knocked.

However, if the distance between the recorder and the sound source is a significant proportion of the room size (a few metres in a typical domestic room), the rise to a peak takes much longer anyway. This is because a significant proportion of the sound is actually reflected off the room walls. The result is that sound takes longer to peak while the sound arrives from various reflections as well as more direct routes.

The relatively long distance between the sound source and recorder also results in a loss of the high frequency component of the sound. This was also noted in the SPR paper.

A group of researchers spent a weekend trying various deliberate knocks and comparing the rise to peak with recordings used in the original paper. They found they could easily reproduce the characteristics of the poltergeist raps with ordinary knocks. For more info read http://www.rationalskepticism.org/paranormal/peanut-gallery-existence-of-ghosts-apparitions-t6933-400.html
Back to top
View user's profile 
cayraOffline
Grey
Joined: 10 Aug 2005
Total posts: 8
Gender: Unknown
PostPosted: 04-09-2010 01:48    Post subject: Reply with quote

I'm a noisy ghost
Can't stop rhymin'
You are my host
Gotta stop whinin
Gonna scare you
And your spouse
Cos dis poltergeist
Is in de house


Sorry couldn't resist
Back to top
View user's profile 
birdyOffline
Great Old One
Joined: 17 Jun 2009
Total posts: 127
Location: London
Age: 29
Gender: Female
PostPosted: 21-08-2013 12:41    Post subject: Reply with quote

that's a really rather impressive rap.
Back to top
View user's profile 
Display posts from previous:   
Post new topic   Reply to topic    Fortean Times Message Board Forum Index -> Ghosts - Poltergeists and entities All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group