Our ears represent a difficult body. They can perceive air waves and transform them to “sounds” in our brain; they supervise balance, and in many respects define our relation to the world around. Our ability – or inability – to hear influences almost all aspects of our life.
The purpose of the given article is to help you to understand the sound nature, to learn, how the ear works, what can cause a loss of hearing and what to do in case of its occurrence.
A sound nature. Sounds are air waves or vibrations, notable by a healthy ear. These vibrations are characterized by frequency (height) and amplitude (loudness). Frequency is defined as a quantity of vibrations per second and is measured in Hertz. The more frequency is, the higher a sound is, and on the contrary. A high-pitched sound example is piccolo (a small flute) or singing of birds. The low-pitched sound is that of a thunder or basses in music.
Sound pressure level. Level of sound pressure is expressed in decibels (db). However a level of sound pressure should not be confused with loudness. For example, the alarm clock call will sound much more loudly, than a growl of a dog even if both sounds have identical level of sound pressure. Hence, loudness is a subjective value and also cannot be precisely measured.
Complicated sounds. Different sounds have various characteristics. Simple sounds, such as pure tone, are vibrations with one frequency while difficult sounds consist of fluctuations on different frequencies. The majority of sounds which we hear every day are difficult. Speech, for example, consists of vibrations with various level of loudness on different frequencies. Usually a range of these frequencies is from 500 to 3000 Hz.
What to do at hearing loss?
If a hearing loss is caused by sulphur accumulation in the ear pass, “a plug” can be easily removed by ENT doctor. Some other kinds of conductive hearing losses are subject to a medical treatment.
On the other hand, if hearing loss is caused by damage of hair cells in an internal ear hearing aid use will be a right decision.
WAY OF HEARING AIDS DEVELOPMENT
Each type of hearing loss is individual and puts singular problems for achievement of the best necessary amplification.
Fortunately, today hearing aids offer modern decisions of these challenges. Digital hearing aids can allocate a speech signal and amplify it at simultaneous suppression of a noise component that considerably facilitates understanding of speech in noisy conditions and reduce undesirable sounds, such as for example, refrigerator noise. They also can be adjusted according to the individual loss of hearing as the frequency range of devices is divided into some frequency ports, in each of which an independent adjustment of parameters is conducted.
Hearing aids will help you to take pleasure in the world of sounds around and will provide considerable improvement of quality of your life.
Current technologies bring lots of benefits. Among them there are not only things for our convenience but also different devices such as digital hearing aids which assist people to overcome phisical limitations. Those who suffer from deafness and need such kind of devices, are invited to check out this hearing aid prices site – it is the right spot offering much details about hearing aids and how to purchase them.
But the technologies do not only give us appliances and tools, they also are the tool for looking for those devices. For instance, if one needs hearing aids, it is smart to make use of the Internet network. Google and other search engines, social networks and forums will help compare and make a choice of what is needed at the best terms which are available on the market. And if you would like to be aware new publications on the topic, sign up for RSS on this blog.
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