Festive seasons are on,it is a common practice in our society to crack crackers and put fire to sound bombs emitting light or fire with sound ,often we forget how much our such activites will cause damage in form of fire and noise to others but we also forget that this noisy sound of high intensity may damge our precious ear for life time.Not only this,the way we live our life everyday we listen to Radio,TV ,Ipods,mobile phones,music system,High speed Rail engines,taking off of Airplanes,Helicopter or noisy vehicles on road or high speedy noisy making machines in factories or Automobile work shops ,announcements and open speeches or mike being displayed before our home or residence by political parties or different religious celebrations or puja or Dusshera or local cultural functions where loud sound comes to us involuntarily and such sound may damage our hearing as smoker in a public places spread damage to near by innocent persons.Hearing loss also occurs when we become old (Presbycusis) or when bony growth takes place at inner ear called Otosclerosis. Protection ,prevention is the best method to get over this donot submit ourself to this noisy sound if possible,donot crack noisy sound crackers,donot listen to radio,mobile phone,TV,Ipod Phones turnig volume very high and close to ears ,in avoidable circumstances either use ear plugs or drums or fingers in ear or cotton packs to prevent hearing loss,simple formula is to avoid listening too noisy or loud sound,tooclosely listening sound and to hear loud sound for some time or continuously.
Sound intensity is measured in the form of a unit called Decibels,sounds too loud or loud sound for aggod time may damage our hearing,sound above 85 decibels may cuase hearing loss even it may be music sound.if a sound of 85 decibels is listened for 8 hrs a day or for about 5 days in a week may damge or hearing,here if sound intensity is increased only upto 03 decibels,i.e.,88 decibels will damage same in half time and a sound of 120-150 decibles or more may damage our hearing in no time.For a sound measurement 10 decibels is considered as one unit ,increase in10 decibels increase sound intensity by double i.e.,this sound is two times loud on listening.Asound below 75 decibels donot damage our hearing evenlistened for much time ,Ipod listend at 60% volume doesnot damage but 100% intensity may damage and it also depends on make,type of sound emitting,how much time and close we are to these instruments .
For example ,Awishper produce 30 decibels,a rainy storm 50 decibels,a Normal conversation 55 decibels , TV 60 decibels,a noisy office 70 decibels,a busy traffic 80 decibels,Hair dryer 90 decibels,an IPOD full volume 110-130 decibels,and same for rock concrete,loud car or home stereo or inside modern cinema house or sitting close to high sound emitting music programmes,Firecrackes and arms upto 140 decibels and same true for a loud engines even at 25 meters.
A sound wave or energy traves from our Ear pinna and Ext auditory Meatus through Bony Ear canal and produce impact on ear drum and make it vibrated and this vibration is carried to inner ear through bones of middle ear MIS and in inner ear Cochlea which contains fluid and a Basilar Membrane on which hair cells are situated are allowed to vibrate and this sound wave is changed into electrical impulse which is carried by Auditory Nerves to Auditory centres in Brain ,all this is situated in a portion clalled Labriynth which also helps us to correct our positon and balacing so damage to internal ear aslo damge our balancing system and in our early childhood Hearing and understanding it also stimulate speeching so if no good hearing speech is also affected and in the last intellegence and learning is also affected.
such hearing loss is some time so slowly that we hardly take precautions in time,so for better undestanding the defect we should be cautions if following symptoms starts as follows:----------------Do I have a problem hearing over the telephone?
Do I have trouble following the conversation when two or more people are talking at the same time?
Do people complain that I turn the TV volume up too high?
Do I have to strain to understand conversation?
Do I have trouble hearing in a noisy background?
Do I find myself asking people to repeat themselves?
Do many people I talk to seem to mumble (or not speak clearly)?
Do I misunderstand what others are saying and respond inappropriately?
Do I have trouble understanding the speech of women and children?
Do people get annoyed because I misunderstand what they say?
so if we found our selves suffering from any thing like this,we should be precautioned and avoid listening close to Mobile Phones,Music System, TV, Ipods,Radio or any cultural or Political or cultural programme or cinema sitting close to loud sound emitting system or use ear plugs at railway or airports or during takeoff and grounding of flights or at factories or at traffic jams or putting fire to crackers or sound emitting crackers or bombs or fire arms.if we prevent it Loud noise hearing loss is completely avoidable.
Dr.D.R.Nakipuria

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