Kinds of hearing aids 

The hearing modern aids are this small strengthening devices and according to of defect of hearing the correctory sounds in range of audio frequency connected with human speech. They be produced the most often in retroauricular form or endaural. Retroauricular apparatus (zaczepowy) ( BTE ) he be situated for shell of ear and joint dźwiękowodem from exactly well-fitting insertion douszną. 

The transfer of heavy-duty sound is to ear the task of insertion, protection before formation burdensome feedback, as well as protection before accidental loss apparatus. It suitably modifying the insertion across mechanical processing ( the change of diameter dźwiękowodu the, additional openings, the abbreviation or fullering) it was it been possible was in considerable degree to improve the quality of sound, getting better the adjustment and in consequence the user's larger satisfaction. They are accessible in several colours it to it was it been   possible was was fit to complexion of skin and colour of hair, as well as in bright, merry colours for children.

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Endaural apparatus was put to ear directly. Whole arrangement along with electronic microphone, receiver and battery be situated in executed casing for given user on the ground earlier the taken model of ear severally. Their size is the basic advantage of endaural apparatuses. 

Hearing endaural aid (ITE) they be designed for wider range of decreases of hearing. Thanks can larger size they hold larger amplifiers as well as telephone coil be equipped in np..

Hearing aid wewnątrzkanałowe (ITC)

Apparatuses ITC are placed in aural channel also. This type of apparatuses be designed for gentle and  average decreases of hearing. 

Apparatuses głębokokanałowe more more and more willingly be practical (CIC) almost imperceptible for surroundings.Possibility of realization of this device type in sure degree be limited both the anatomical regards ( the shape of aural channel, quantity of paid out cerumen, ew. the change the sick leave), as and the person's manual efficiency interested - small sizes of apparatus and necessity of frequent cleaning of his changes of elements require the efficient hands and good sight. In some cases considerable meaning takes place fact also that less in endaural apparatus are  than in retroauricular

it on location necessary electronic elements though the dynamic development of modern technologies observing was it been possible was in several years to expect solutions of this problem. 

Our present knowledge about process of hearing permits to explain why many men do not it be satisfied from one's hearing aids. Strengthener sound does not it suffice alone to to help person hard of hearing effectively. The receiving defects of hearing require except strengthener the corrections the frequency response the the, decrease in him the dynamics of signal without contained loss the information, of decrease on understanding of speech the influence of noise also.   regulating arrangements. Hearing classic aids can have controllable 2- limits in sure degree 4 parameters, what the precision of adjustment. It it more more easily and more exactly was it been possible was to choose and to put apparatuses programmable by computer, but it creates the largest possibilities technician digital. Digital amplifiers the most probably for several summers will dominate market of hearing aids. Three first year back fully hearing digital aids they appeared in sale and it offers today similar devices a dozen or so firms. Leading manufacturers' articles, they in spite continually high price find more and more buyers.

Classic analog apparatuses

Popular executed in retroauricular version apparatuses and endaural. Equipped in regulator of volume, the, parameters controllable jednoprogramowe by hand. Good effects in many incidents near correc selection were got.

Programmable apparatuses

Analog apparatuses, programmable digitally by computer. Retroauricular and endaural, jedno or wielo programowe, some controlled pilot models.   The most advanced wielomikrofonową use in aim technology the obtainment of good direction profile of apparatus, and so it eliminates possibility of enlargement of of sound non-resident from jednego level, definite direction, what quite a lot sounds undesirable effectively. Near sure (dependent from quantity of programmes) they permit the commitment in service of apparatus the user on obtainment very good the results in difficult conditions also acoustic

Digital apparatuses   

The most modern retroauricular apparatuses and endaural, the most often fully automatic.  On the ground the introduced data about kind and size of hypacusia the patient and thanks the continuous analysis of acoustic surroundings they, provide for comfortable level of sound, in measure possibility muffling noise.  

After precise adjustment the very good effect of meringues was got superfluous the commitment the user in service of apparatus.   Digital apparatuses have in analog technique inaccessible possibilities.