Patent Application
20090274327
This application claims priority of German Patent Application No. 10 2008 021 612.7 DE filed Apr. 30, 2008, which is incorporated by reference herein in its entirety.
The invention relates to a circuit for operating a hearing device and a hearing device.
Hearing devices are technical aids, which ameliorate congenital or hereditary hearing function impairments which are not amenable to causal therapy. Hearing devices amplify and modulate the sound, in other words the acoustic signal, upstream of the actual sense organ of the ear, the inner ear. Hearing devices consists here of one or several microphones, an electronic circuit, which has at least one analog or digital amplifier and one or several loudspeakers as well as an energy source for supplying these components.
A hearing device acoustician individually determines the audiometric characteristics of the ear for each patient and, with the aid of this, performs the optimal setting of the operating parameter(s) of the hearing device. Optimum speech intelligibility is generally aimed for here. The damaged hearing is however in many instances particularly sensitive to increased output levels. If the damaged hearing is provided with a hearing device which is adjusted for optimum speech intelligibility, the patient perceives this to be uncomfortable and will in some circumstances not use the hearing device.
The patent application DE 195 42 961 discloses a hearing device with a control unit, which, during a certain time interval, performs the adjustment of the operating parameters of the hearing device from a starting situation which is pleasant for the patient towards a target situation which is determined by the hearing device acoustician to be optimal. This adjustment process, also referred to as “training”, provides the hearing device wearer with a pleasant introduction into the use of the hearing device which is new to him/her.
Modern hearing devices nevertheless provide the hearing device wearer with a series of possible influences, with which the hearing device wearer can on his/her part adjust the operating parameters of the hearing device to his/her wishes and requirements. This influence can however run contrary to the objective of the training and in an extreme case can lead to the manual “correction” by means of the hearing device wearer once again canceling out and/or permanently disrupting the adjustment achieved by the training so that the object of the training is never achieved.
An object of the present invention consists in specifying an improved circuit for a hearing device, which performs hearing device training aiming at a target situation which is determined by the hearing device acoustician as optimal, said target situation not being influenced by, or influencing, (fine) adjustments performed by the hearing device wearer or by the hearing device acoustician.
This object is achieved by a circuit comprising a control unit, which implements the matching of the operating parameter(s) with a minimal matching rate in time segments, in which the operating parameters are often influenced by means of the control element and/or the data processing device, and with a higher matching rate in time segments, in which the operating parameters are rarely influenced or not influenced at all by means of the control element and/or data processing device.
The present invention also relates to a hearing device with a circuit of this type.
Exemplary embodiments of the present invention are explained in more detail below in conjunction with a drawing:
Provision is also made for a final amplifier 7, which is connected to the receiver 8, as well as an ear mold piece 9. A battery 10 electrically powers the hearing device 1 by way of an on/off switch 19. The volume of the hearing device 1 can be adjusted via a volume controller 18. The controller 12 is connected to an input unit 16.
The hearing device 1 includes a control unit 12 which interacts with a storage device consisting of the memory 13 for an operating parameter setting of the starting situation as well as a memory 14 of the operating parameter setting of the target situation.
The operating parameters to be adjusted are preferably the extent of the preamplification, the extent of the compression ratio, of the threshold value and/or of the time constants of the compression circuit and/or the frequency bandwidth, which adjust the sound to the individual hearing ability and/or the maximum output level. The matching of the operating parameters can either take place individually or together.
The individual operating parameters are now adjusted as a function of the control activity expected or determined in a specific time segment.
The already explained volume controller 18, but also the sound regulator and/or program selector switch (not shown) can also be considered as control elements for instance, with which the hearing device wearer can adjust the tone output of the hearing device 1 to his/her requirements, as well as the input unit 16, which allows the recording of parameters from an external data processing device, for instance a PC, by a hearing device acoustician, who can perform the (fine) adjustment of the hearing device in this way.
If a large number of control processes affecting the sound and/or volume in a time segment is now registered by the controller 12, or a large number of such control processes takes place in a time segment, (for instance a hearing device wearer initially “plays” with all the functions of his/her new hearing device, after having received it), the matching of the operating parameters of the starting situation to the target situation is very slow, i.e. with a minimal matching rate. This is advantageous in that the hearing device wearer does not attempt to reverse matching steps perceived to be too intensive by counteracting them accordingly. On the other hand, the hearing device wearer is able to judge better whether a fine tuning performed by the hearing device acoustician is suitable or not if the matching process running at the same time does not give rise to significant changes.
A minimal matching rate can be achieved for instance by the time intervals, with which the matching steps are implemented, being selected longer than usual. A minimal matching rate can likewise be determined by the weighting, with which the matching process exerts influence on the operating parameters to be equalized, being reduced.
If by contrast a minimal number of control processes affecting the sound and/or the volume in a time segment is registered by the controller 12, or experience shows that only a few such control processes take place in a time segment, the matching of the operating parameters of the starting situation to the target situation takes place with a normal or increased matching rate. The normal matching rate is understood here to mean the matching rate which a conventional hearing device uses with a continual matching of the operating parameters of the starting situation to the target situation.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2008 021 612.7 | Apr 2008 | DE | national |
