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World's Worst Sound ?

united kingdom journal of neuroscience dissociable” sounds at high frequencies

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#1 Hum

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Posted 14 October 2012 - 12:24

Wanna hear it? :woot:

http://screen.yahoo....d-30859114.html

A research team at the University of Newcastle examined brain activity as subjects listed to 74 different sounds, from running water to a fork scraped over glass, to determine what sounds humans find most unpleasant.

Fingernails on a chalkboard, screeching tires and an animal crying are not as unpleasant to your ears as the sound of a knife sliding against a glass bottle, a new study finds.

A research team at the University of Newcastle examined brain activity as subjects listed to 74 different sounds, from running water to a fork scraped over glass, to determine what sounds humans find most unpleasant.

The sharp side of a knife on a bottle came out on top.

“Subjects were informed that they would be listening to unpleasant sounds in the MRI scanner but were not told about the type of unpleasant sounds or the overall aim of the study,” researchers said.

Scientists wanted to pinpoint how the ear transmits sound to the brain, that then codes that sound as unpleasant. They also needed to make these links separate from any emotional or cultural associations with a certain sound — like a baby crying or the sound of someone vomiting.

The most “dissociable” sounds had high frequencies, which is tough for the human ear to tolerate, the study concluded.

From here scientists were seeking to learn how the sounds — acoustics — affect the auditory cortex of the brain and also the amygdala, a primitive region that processes emotions.

The amygdala helps define the sounds as unpleasant, linking them to the physical and emotional reactions to sounds, like a high pitch wail, experts explain .

The reaction might also be there to alert humans to potential danger, the study found.

“For example, an animal cry (signaling the presence of a dangerous animal) may have different time and frequency domain structure related to the size of the animal.”

The results of the study were published in the Journal of Neuroscience.

source


#2 n_K

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Posted 14 October 2012 - 12:35

According to http://newsfeed.time.com/2012/10/11/listen-the-five-worst-sounds-in-the-universe/
The worst five are:

Knife Bottle;
Listen on Soundcloud.com

Fork Glass;
Listen on Soundcloud.com

Blackboard Chalk;
Listen on Soundcloud.com

Blackboard Nails;
Listen on Soundcloud.com

Ruler Bottle;
http://soundcloud.com/wellcometrust/ruler-bottle

Although I have to say I've listened to all 5 and none of them bother me, though someone that continually sips their tea all day and makes the noise of getting things out their teeth really do annoy me though :p

#3 remixedcat

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Posted 14 October 2012 - 12:37

justin beaver's voice.

#4 FMH

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Posted 14 October 2012 - 12:52

For me it's fork/spoon on teeth.

#5 OP Hum

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Posted 14 October 2012 - 13:01

2 cats fighting gives me the willies ! :woot:

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#6 BattleDaggit

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Posted 14 October 2012 - 13:05

They should have included the default iPhone ring tone.

#7 Detection

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Posted 14 October 2012 - 13:20

For me it's fork/spoon on teeth.


+1 was just talking about that

#8 FloatingFatMan

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Posted 15 October 2012 - 07:32

No. The worst sound in the world is that sound a person makes when they have a dose of the squits!

#9 Perfect72

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Posted 15 October 2012 - 07:41

That sound is nowhere near as horrifying as the alarm clock buzz.... It signifies the worst part of my day, and makes me want to hurt things.



#10 FightAndLive

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Posted 15 October 2012 - 07:46

justin beaver's voice.


Nice : ).

#11 remixedcat

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Posted 15 October 2012 - 07:52

That sound is nowhere near as horrifying as the alarm clock buzz.... It signifies the worst part of my day, and makes me want to hurt things.

http://www.youtube.com/watch?v=NHg8jTH7Bqk



this is funny cuz at an apartment complex I lived in there was like 5 alarm clock radios thrown out the windows.. I'd see at least 4 or 5 of them out the windows at any given time.,...

#12 +Byté

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Posted 15 October 2012 - 08:03

Sorry i have to....



#13 AJerman

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Posted 15 October 2012 - 16:34

Knife on a bottle, very similar to knife grinding on a plate which I have always thought to be one of the most unpleasant. I can't stand people that have to cut their food with the force of an elephant and try to grind grooves into the plate making a very similar sound.

#14 Astra.Xtreme

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Posted 15 October 2012 - 16:52

Sorry i have to....

http://www.youtube.com/watch?v=YKAyhLtiKEA


That was also the first thing that came to my mind. :rofl:

#15 Charisma

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Posted 15 October 2012 - 16:55

The fork-on-teeth thing is awful, can't stand the sound or the feel, gives me chills.

Although someone had their kid in here earlier and it reminded me of probably my #1, the sound of kids whining/crying/squealing. Gets on every last effing nerve I have :s