Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent
1984-07-03
1986-03-11
Rubinson, Gene Z.
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
179107R, 381 69, H04R 2500
Patent
active
045755868
DESCRIPTION:
BRIEF SUMMARY
Hearing aids, besides having the adjustment means which the patient frequently wants to operate, such as volume control, contact and switch for switching over from microphone to teleloop, are often equipped with so-called secondary adjustment means serving to vary certain properties of the apparatus, e.g. the tone reproducing characteristic and the maximum sound intensity. These adjustments are usually made once for all when the patient receives the hearing aid in order to adapt properties of the aid as best as possible to the individual requirements of the patient in question.
The adjustment means are often continuously movable, and adjustment is e.g. made by rotating a slotted shaft or by positioning a slidable button. In practice it may be of great importance to the patient's benefit of the hearing aid that optimum adjustment is provided for. There may also be interaction between two or more adjustable characteristics so that it is a matter of finding the optimum combination of adjustments. Thus, it is desirable that the user himself can adapt his aid under ordinary sound conditions or when listening under simulated test situations.
In order for the patient to get the natural hearing impression he must carry the aid in normal position on the head, i.e. either behind the ear, in the ear or in an eyeglass frame. Since, however, the adjustment means are very small and often inaccessible in the position of use, adjustment is made in practice by removing the aid followed by random adjustment and testing, and in most cases removal and random adjustment again, and so on. No matter whether the user himself performs the adjustment in this manner, or whether another person assists him, it is always doubtful whether the optimum adjustment is found.
The invention concerns an apparatus for use in the adjustment of the secondary adjustment means of a hearing aid, and its object is the provision of such an apparatus which enables the user to readily perform such adjustment with the hearing aid in the position of use and under ordinary conditions of listening.
This object is achieved in that it consists of an adaptor which is arranged to be applied to the hearing aid and has one or more moving means which are brought into movement-transmitting communication with one or more corresponding adjustment means of the hearing aid upon application of the adaptor, and a control desk equipped with one or more adjustable activation means and in such communication with the adaptor that movement of the activation means or each activation means thereof causes corresponding movement of the corresponding moving means or each corresponding moving means of the adaptor. This construction allows the manual adjusting process to be moved from the hearing aid itself to the control desk which can be lifted in a convenient position and whose activation means may have a suitable size allowing for ready adjustment.
The secondary adjustment means of the hearing aid are usually gathered on a panel disposed in a recessed opening in the housing of the apparatus, which may be closed by a cover when the adjustment has been performed. When used in connection with such a hearing aid, the housing of the adaptor is expeciently formed with a protruding frame fitting in the opening in the housing of the hearing aid, the moving means or each moving means of the adaptor being placed within said frame.
A particularly simple mechanical embodiment of the apparatus is characterized in that the activation means or each activation means on the control desk is connected with the activation means or with its respective activation means on the adaptor through one or more wires in a bowden cable. More particularly the bowden cable contains a fixed wire for fixing the length. When the activation means or each activation means on the control desk is connected with the corresponding wire in the bowden cable through a movement transforming mechanism, the size and travel of the activation means or each moving means of the control desk may be selected according to the user's
REFERENCES:
patent: 3989904 (1976-11-01), Rohrer et al.
patent: 4099035 (1978-07-01), Yanick
patent: 4114098 (1978-09-01), Booty
patent: 4396806 (1983-08-01), Anderson
Byrd Danita R.
Eslinger Lewis H.
Rubinson Gene Z.
Topholm & Westermann ApS
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