CrazyEngineers Archive
Old, but evergreen and popular discussions on CrazyEngineers, presented to you in read-only mode.
@vipandeep • 28 Apr, 2011
Hi Guys,

Recently I have been thinking about the origin of the sound that we hear when we close our ears with fingers. Could it be the flow of blood inside body? or air pressure trapped in the ear tunnel make the air molecules vibrate and produce sound? anything to do with balancing fluid?

I want to hear your opinion. Any theory is appreciated.

Thanks in advance.
@vipandeep • 29 Apr, 2011 I didn't expect silence on this. 😔
@maria flor • 29 Apr, 2011 Sound like the sea!!!! like when you put your ear on a shell
@Varsha0802 • 29 Apr, 2011 It's the sound of blood rushing through the veins in our ears.
@narayana murthy • 29 Apr, 2011 i heard nothing OMG i think i am becoming deff 😁
@vipandeep • 29 Apr, 2011 Thanks guys. Can i get any reference? i want to read a bit more about it.
@vipandeep • 29 Apr, 2011 and if it is the blood running in veins then shouldn't we hear the affect of pulse?
@maria flor • 29 Apr, 2011
vipandeep
Thanks guys. Can i get any reference? i want to read a bit more about it.
How about this: WHY WE HEAR HUSH NOISE WHEN EARS ARE CLOSED/PLUGGED? - Yahoo! Answers India
@PraveenKumar Purushothaman • 29 Apr, 2011 When you are in a closed room, with no noise, even the sound of a pin dropping is heard. The same way, when you close your ears and block the external sound, only the sound inside the body, i.e., blood flow is heard... 😀
@Mr.Don • 29 Apr, 2011 Hey everyone noticed anything when you close your ears, its the same feeling when you close your eyes. Feel very relaxed. Which means it has to be the sound from inside when the internal blocked air hitting the ear drum very soft.

and I don't think its the sound of the blood flowing through veins though.

P.S: Heavy Disturbances cause irritation.
@Ramani Aswath • 30 Apr, 2011
vipandeep
Hi Guys, Recently I have been thinking about the origin of the sound that we hear when we close our ears with fingers. Could it be the flow of blood inside body? or air pressure trapped in the ear tunnel make the air molecules vibrate and produce sound? anything to do with balancing fluid? I want to hear your opinion. Any theory is appreciated. Thanks in advance.
Generally hearing is modified by ambient noise. The ear drum is very sensitive to the air pressure pulses, which is how we hear. When you close the outer ear, all external noise is blocked. Even very low decibel noise can then be heard. When you use your fingers to close the ear there is usually some small flexing of the muscles in the finger, a little bit of rubbing of the finger againt the inner skin of the ear and the compression of the surrounding muscle fibres in the ear. All of these generate small sounds, which can be heard in the silence imposed by the closure. A hearing aid or the ear phones of an MP3 player delivers very small power, yet the sounds are loud and clear.

You do not hear these sounds if you plug the ear with soft rubber foam plugs, which are inert and do not move like fingers.

Bioramani
@silverscorpion • 04 May, 2011 I think it's due to white noise..

White noise is the noise (Noise is some random signal manifested in the form of sound. I don't mean noise as in the noise we make or noise made by some artificial sources..) inherently present in the atmosphere..
When you place your hand close to your ear, what you hear is the amplified form of that noise.. Again, I'm not too sure about this, but when I thought about it, this seemed to be more plausible..
@silverscorpion • 04 May, 2011
bioramani
Generally hearing is modified by ambient noise. The ear drum is very sensitive to the air pressure pulses, which is how we hear. When you close the outer ear, all external noise is blocked. Even very low decibel noise can then be heard. When you use your fingers to close the ear there is usually some small flexing of the muscles in the finger, a little bit of rubbing of the finger againt the inner skin of the ear and the compression of the surrounding muscle fibres in the ear. All of these generate small sounds, which can be heard in the silence imposed by the closure. A hearing aid or the ear phones of an MP3 player delivers very small power, yet the sounds are loud and clear.

You do not hear these sounds if you plug the ear with soft rubber foam plugs, which are inert and do not move like fingers.

Bioramani
Ha!! Good one!!

I didn't see this post when I replied.. Now I have the source of the white noise that I mentioned!! 😀
I do think any small source of sound will get sufficiently amplified in that condition, where most external sounds are cut off..
@Ammar Aziz • 04 May, 2011 i think these are actually the sounds of differnt type of activities take place in our body so i appreciate your prediction
@DheerajR • 04 May, 2011 I have a simular clicking sound but also a whistleing at about "middle C " level if I put my finger in my right ear,also if I go out in the wind with the wind coming from behind me may be it because of air pressure that create when we put fingers on our ears
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