I know this sounds a little wierd, but tell me what you think about this.  When something makes a "Sound Wave",  Is it a noise only if it touches your Ear Drums?
128446
The tree would not make noise...noise= transmitter and receiver. No receiver no noise
424275
There is a condition where you can hear your pulse in your ears, but the Ent should have found that.  The next thing that comes to mind is hearing your carotid pulse in your neck.  How old are you?  Middle -aged or more?  Talk to your regular doctor, ask hm to check your neck veins.  As we get older, we can have narrowing in the carotid arteries in the neck...this causes a 'MURMUR" or whooshing sound.  If that is ok, then ignore it.  sometimes this happens and there just is no reason found.
513499
I can hear mine sometimes also. As you say, it happens ina quiet place. As the other answer say, ask a doctor. But guess is something normal but not everyone has it.   Be yourself and take care of the thumps ald fill it with love. Take care.
113469
Many moons ago....before we had such toys as computers I was heavy into audio experimentation. This was before anyone had even heard of EVP. I fiddled in my little shop with all sorts of home brew audio equipment. I built myself an early wireless microphone and found that by placing the mic in different places...I.E. outside, in the basement, in different rooms, etc. and feeding the signal to my audio amp with the volume way up I got some very unusual and frightening sounds. Sometimes I swore I heard voices. Got the crap scared outta me a few times! I had an old reel to reel recorder and recorded some of the sounds...I also remember my first portable recorder.....wish I still had some of those sounds. Get yourself a cheap hand held cassette recorder and set it up in different places and just record sounds. Try putting it in places that seem quiet to you. Put the cassette in your audio system and crank up the volume.you will be surprised!
495790
Having the weight of your body on your arm when you move it causes the cartilage and bone to rub and move around causing the sound. If it hurts or really bothers you then see a doctor but i wouldn't worry about it, mine does the same thing.
167697
Hmmmm I doubt it, I mean its just a little piece and its just your ear.
633962
I'm not 100% sure but I think your idea is correct. Longitudinal sound waves in the metal, which travel at a different and faster speed than the visible wave, reflect off the pulse or kink (because there's a discontinuity in sound speed at that point). Because the pulse is moving away, the reflected wave has a lowered frequency each time it's reflected - that's expected behavior.\n\nAn equivalent way of saying the same thing (although it seems different) is that the fundamental wavelength of the standing wave based on the length of the tape between the two endpoints: the top of the tape and the pulse, is continuously lengthening or shrinking causing the pitch to go down or up continuously like the pitch of a guitar string when the hand slides along the fingerboard.\n\nThis can't be a case of a Doppler shift caused by a moving sound source - because in that situation, the pitch would be lowered (for a source travelling directly away) but not continuously decreasing.\n\nWith respect to the other question:\n\nIt's quite certain that there can't be any difference in speed between a wave moving up or down (at a given point on the tape). The only possible effect of gravity is as explained by Epidavros, to gradually increase the wave speed at higher levels - *if* it so happens that total weight of the tape (e.g. when it's rolled up) is comparable to the spring tension.
273092
The amplification occurs when the wave travels from the air medium (outer ear) to the liquid medium (inner ear).  The bones that are attached to the ear drum actually amplify the wave.  This is acheived by a lever action of the bone.  The sound wave vibrates the bone (I can't remember which bone, there are 3).  The bone is secured at a fulcrum so that one end causes the other to vibrate more forcefully.  Here's an example.  If you hold a pencil about an inch from the eraser.  Then flick the eraser end up and down.  Notice how the other end (if it is a long pencil of course) moves up and down more than the eraser end.  This is the exact same mechanism your ear uses to amplify the signal.
348985
Ringing of the ear is called Tinnitus.\nInside your inner ear, thousands of auditory cells maintain an electrical charge. Microscopic hairs form a fringe on the surface of each auditory cell. When they're healthy, these hairs move in relation to the pressure of sound waves. The movement triggers the cell to discharge electricity through the auditory nerve. Your brain interprets these signals as sound.\n\nIf the delicate hairs inside your inner ear are bent or broken, they move randomly in a constant state of irritation. Unable to hold their charge, the auditory cells "leak" random electrical impulses to your brain as noise.\n\nDamage to auditory cells in your inner ear most commonly results from:\n\nAge-related hearing loss (presbycusis). This process usually begins around age 60. \nNoise-related damage to your inner ear. This erosion of your hearing ability may result from excessive exposure to loud noise over a long period of time. Tractors, chain saws and weapons are common sources of noise-related hearing loss. Portable music devices, such as MP3 players or iPods, may become a common source of noise-related hearing loss in the future if people play these devices loudly for long periods. \nOther causes of tinnitus may include:\n\nLong-term use of certain medications. Aspirin used in large doses and certain types of antibiotics can affect inner ear cells. Often the unwanted noise disappears when you stop using these drugs. \nChanges in ear bones. Stiffening of the bones in your middle ear (otosclerosis) may affect your hearing. \nInjury. Trauma to your head or neck can damage your inner ear. \nCertain disorders of your blood vessels can cause a type of tinnitus called pulsatile tinnitus. These may include:\n\nAtherosclerosis. With age and buildup of cholesterol and other fatty deposits, major blood vessels close to your middle and inner ear lose some of their elasticity — the ability to flex or expand slightly with each heartbeat. That causes blood flow to become more forceful and sometimes more turbulent, making it easier for your ear to detect the beats. \nHigh blood pressure. Hypertension and factors that increase blood pressure, such as stress, alcohol and caffeine, can make the sound more noticeable. Repositioning your head usually causes the sound to disappear. \nTurbulent blood flow. Narrowing or kinking in a carotid artery or jugular vein can cause turbulent blood flow and head noise. \nMalformation of capillaries. A condition called A-V malformation, which occurs in the connections between arteries and veins, can result in head noise. \nHead and neck tumors. Tinnitus may be a symptom of a tumor in your head or neck.  \n\nSo as not to cause panic.  Maybe it's just a simple case of water trapped in your ear. or an infection called otitis media.  It would be prudent for you to go see an EENT for proper diagnosis. and treatment.  All you need might only be an ear irrigation.\n\nTinnitus is usually caused by a head injury, an infection, such as colds or sinus infection or sinusitis, a disease or exposure to loud sounds such as gunshots and explosions.\n\nIt can be a sign of hearing loss, or it can result from head injuries, or diseases that range from the common cold to diabetes. People who work with noisy equipment, such as power tools, can also get it. Or tinnitus may be initiated by a single loud noise, such as a gunshot or an explosion. It can also be a symptom of almost any ear disorder, including the following:\n\n Ear infections \n Blocked ear canal \n Blocked eustachian tube \n Otosolerosis \n Tumors of the middle ear \n Meniere's disease \n Damage to the ear caused by drugs (such as aspirin and some antibiotics) \n Hearing loss \n Blast injury from a blast or explosion \n\nTinnitus may also occur with other disorders such as anemia, heart and blood vessel disorders including hypertension and arteriosclerosis, and low thyroid hormone levels in the blood (hypothyroidism).\n\nA wide variety
194692
You may have torn your ear drum. It's not very common for concerts. But it can happen. See a doctor, When you tear your ear drum every sound seem to be extremely loud and painful.
363501
it would be a soft tune for a few hours and then you'd hear the drummer accidentally falling on the drums and creating a mess. then it would go quiet. but soon a voice would say, 'OK.... from the beginning', and the soft tune would start again. so on and on it goes.\n\nI'm having a bit of difficult time with the drummer.
128861
Yes sometimes. I don't like it that loud. Its ridiculous.
290575
It doesn't actually come in contact with anything to cause friction.  When a "machine" makes sound, it is made from the moving parts as they hit or rub against one another.  Since a moving pendulum is relying on gravity and its own weight for the arc movements, it doesn't have anything to rub against.
120627
Sound is not a dimension of its own. It is simply the result of waves passing thru the air. This causes the air to be compressed and de-compressed according to the kind of disturbance that caused the wave. When you shout or hit something the air in this region is compressed and then begins to travel outward, fairly equally in all possible directions from the source.\n\nEach occurrence of the sound causes a new wave-front to be formed, Imagine a water wave, but in the air, and instead of seeing and feeling it you hear it...and if it's loud and intense enough you'll feel it.\n\nThe concept of dimensions gets tricky when we 3-d humans get beyond 4 dimensions of our real world; length, width, height, time.\n\nThere are many, many dimensions, but they reside in mathematical space and are impossible to visualize from the most part. One may be able to convince themselves that they can visualize 5 dimensions, but most likely not.\n\nI can't say for sure if anyone has enumerated the dimensions or not, and if they did if it would be a number you could really.....well...count on.....lol. The idea of a dimension has to be an abstract one of course, so you would have to let go of your standard thought about length, width and so on. Not an easy task to 'accept' for some folks, but that's what makes our world so much fun....always something cool to learn, discover or think about.\n\nHope this helps.
424131
<>You are suffering from tinnitus (aka tintinitis); and yes, this can be indicative of hearing damage from loud music.  It should subside within a few days but, if not, you should see an audiologist or ENT quickly.  The symptoms CAN remian with you forever and they can be very unpleasant.  BTW, do not confuse this with a "ruptured ear drum;" that is a different problem and can be cured or healed.
127948
Absolutly. But how they get into your ear/tooth/rectum is another story. I used to mess with my little brother all the time when we were kids. Playing what sounded like either computer sounds, or "alien" sounds  from a speak I had placed in the couch. Freaked him out. Of course I would pretend that I couldn't hear it. He eventually figured it out.
606644
yup you are right. The force requires matter. Like a tree in the forest falling. Sound waves are created but if no one hears it does it really exist?