EP2026607A1 - Individually adjustable hearing aid and method for its operation - Google Patents

Abstract

The invention relates to an adjustable hearing aid, on which at least one parameter which has an influence on the transmission and amplification characteristics of the hearing aid can be adjusted, wherein means (8) are included, which include an examination of the effectiveness of an adjustment of this parameter in the respective existing hearing, and means (8) are included, which enable the adjustment of this parameter in the presence of a minimum effectiveness.

Description

The invention relates to an individually adjustable hearing aid, in particular with individually adjustable noise suppression, and a method for its operation.

Hearing aids are used primarily to allow hearing-impaired patients the most natural hearing and to compensate in this regard usually medically-related disorders of the hearing organs. This should be done as comfortably as possible and without significant impairment of the hearing aid wearer. Accordingly, in the functional spectrum of hearing aids simple sound-pressure-amplifying devices and / or prosthetic devices for the prosthetic support of stimulus generation can be contained in the interior of the ear. Regardless of the embodiment, the hearing aid used will always have the task to implement applied sound pressure in hearing stimuli of the hearing aid wearer, which would also occur in physiologically and anatomically intact hearing organs. To meet these requirements, numerous subjective circumstances of the respective hearing aid wearer must be included, which may result from the individual nature of his hearing impairment, but also from the selectivity of his perception.

Modern hearing aids therefore make it possible to set a multiplicity of parameters which have an influence on the transmission and amplification characteristics of the hearing device used. The setting of these parameters is usually made by the manufacturer in the form of a basic setting, which can then be adjusted in one or more sessions with a hearing care professional on the patient in the form of a fine adjustment. It goes without saying that such a fine tuning associated with a considerable effort for the patient and the hearing healthcare professional involved and at least for the patient can mean a significant loss of comfort.

The problem addressed is particularly true when the individual adjustable parameters simultaneously form the input variables of complex signal processing algorithms, which in turn have an influence on the transmission and amplification characteristics of the hearing aid used. In modern hearing aids several such algorithms, for example for the suppression of noise and highlighting desired sound sources, may be implied. Examples are (adaptive) directional microphones, algorithms for attenuation of non-speech components, for fast spectral noise estimation / Wiener filtering, for wind noise suppression or signal envelope curve-based suppression of transient noise, just to name a few. The potential effectiveness of these algorithms can usually be set via various parameters, the actual effect depends not only on this parameterization but also on the adjacent sound input signal and the hearing situation represented thereby. The parameterization of various noise reduction algorithms is so far also made statically in the adaptation of the hearing aid at a hearing care professional. In this case, starting from a factory-set default setting changes manually made by the acoustician. Such a fine adjustment can be done in several steps and is also relatively expensive. Furthermore, the decision as to which parameters should be adapted which algorithm, under laboratory conditions is very difficult to make, since the subjective requirements of the hearing aid wearer often only show in real listening situations.

There are various ways known to be able to make at least part of the adjustment and / or fine-tuning of the hearing aid independently of a hearing aid acoustician, which is done in the ideal case by the hearing aid wearer / patient himself. However, such a subsequent adaptation of a hearing aid is currently possible only to a limited extent.

On the one hand, the adjustability of relevant parameters must be technically prepared, which often requires an acoustic laboratory at least in the conception phase and can only take place under simulated conditions. On the other hand, a good adaptation to actual listening situations, especially in comfortable hearing aids, partly with the adaptation of numerous technical parameters associated, which can either require a lengthy search for optimal parameters and / or the technical knowledge of a layman, especially what the selection of a particular Listening situation relevant parameters and / or algorithms may be overwhelmed.

It is known to reduce the effort for external adaptation / fine-tuning of a hearing aid in that an actual hearing situation is classified, which enables the subsequent assignment of the classified hearing situation to a plurality of stored data records with preset parameters. In this case, only the selection of the parameter set best suited to the respective listening situation is made interactively ( EP 0 814 634 B1 ). However, this procedure requires the storage of relatively many data records with preset parameters in order to be able to make a fine-grained selection of the appropriate parameter set.

It is also known, based on stored preset parameters and the classification of a specific hearing situation, to offer parameter sets which are automatically varied after they have been deselected by the hearing device wearer ( EP 1 453 356 A2 ). However, such automated and pre-determined parameter variation makes it difficult to optimally adapt to unpredictable listening situations when no suitable parameter set is available and / or no corresponding parameter variation is prepared.

It is furthermore known to combine sequences of program steps which are required for adapting a hearing device to specific listening situations into so-called macros. to facilitate their repetition ( DE 101 52 197 A1 ). However, the problem of the possibly high complexity in the first-time implementation of the corresponding program steps remains.

It is furthermore known, on the basis of stored preset parameters and the classification of a specific hearing situation, to offer parameter sets which are varied by the hearing aid wearer and subsequently stored and assigned to the classified hearing situation ( DE 102005 009 530 B3 ). However, the complexity of the parameter variation to be made remains in such hearing aids.

From the patent DE 100 64 210 A1 In addition, it is known to read out an electrical input signal from the hearing aid for adapting a hearing aid and to supply it to a processor unit for graphic representation. This can be used to show the effect of a change in hearing aid parameters.

The object of the invention is to specify a possibility of being able to set a hearing device simply and reliably, in particular if an adaptation of complicated signal processing algorithms to a specific hearing situation is to take place.

This object is achieved by an adjustable hearing aid with the features of claim 1. The claims 2 to 9 indicate advantageous embodiments of such a hearing aid. Claim 10 relates to a method for operating such a hearing aid, the claims 11 to 16 relate to advantageous embodiments of this method.

Disclosure of the invention

The core of the invention consists in offering only a few parameters or only one parameter when adjusting a hearing device, which can be varied in a specific hearing situation. For this purpose, only a few or one actuating element are to be actuated by the person who is to undertake the adaptation of the hearing device to the relevant hearing situation, in particular the hearing device wearer himself in a normal everyday situation. However, the functional scope of the hearing aid is not limited thereby. This is achieved in that for the adjustment of the hearing aid provided control elements are each associated with such circuit arrangements, via which a variation of exactly the parameters is possible, their change in the relevant hearing situation and / or taking into account the current settings of the adjustable parameters of the hearing aid has a particularly strong influence on the transmission and / or amplification properties of the hearing aid. The possibility of adjusting other parameters can thereby be eliminated temporarily, but re-established by a change in the linkage of the actuators when a listening situation results, in which the expediency or necessity of the variation of one or more parameters does not previously for such Variation were offered. A change in the combination of the control elements can thus also take place according to the invention, if its adjustment to the existing hearing situation has been improved by adjusting the parameter with the greatest influence on the transmission and / or amplification properties of the hearing aid so that now the adjustment another parameter has a greater impact on the transmission and / or amplification characteristics of the hearing aid than would be the case with further fine-tuning of the already well adjusted and first varied parameter.

Parameters are all sizes, for which in principle an adjustability provided in at least some listening situations is that can have an influence on the transmission and amplification characteristics of the hearing aid. This may include parameter sets which are integrated in the form of parameter ensembles which can not be set independently of one another in signal processing algorithms such as those used for noise suppression. Under transmission and / or amplification properties of the hearing aid in the present context, all properties of the hearing aid to understand that can be adjusted by actuators or other technical means to a hearing situation and / or a customer request for acoustic and / or selective properties of the hearing aid.

The invention makes use of a determination or estimation of an effectiveness of an adjustment to be made in order to offer this adjustment option to a hearing device user as a function of this effectiveness. The effectiveness of the adjustment of a parameter or an algorithm requires at least a qualified change between the input and the output signal of this algorithm or a dependence of this change on the selected setting. In general, any comparison between the input and output signals of an algorithm can serve as a measure of its effectiveness.

For the realization of the invention, at least one adjustable hearing aid is required, on which at least one parameter which has an influence on the transmission and amplification characteristics of the hearing aid can be adjusted, wherein means are included which test the effectiveness of an adjustment of this parameter in the each existing hearing situation, and means are included, which enable the adjustment of this parameter in the presence of a minimum effectiveness. Advantageously, the activation of the adjustment possibility comprises the circuitry connection of the adjustable parameter with a variably assignable control element. Thus, if the actuator is actuated by the hearing aid wearer, an adjustment of the parameter, which is linked at the time of adjustment with the actuator, also show a corresponding effect, since it would not be to change the actuator in a given hearing situation in the absence of efficacy. Unrecognized or poorly reproducible adjustments or adjustments of parameters are thus avoided. Thus, it is always fixed internally which parameters are changed according to the user input in order to adapt the device settings, in particular the settings of noise suppression algorithms, to the user's wishes. Through the described determination of the effectiveness of the individual algorithms and the exclusive change of the algorithms active in a situation, an implicitly situation-dependent adaptation of the noise suppression effect takes place.

Since the adjustability of hearing aids according to the invention, in particular in the adaptation of complicated signal processing algorithms, shows its advantages, the invention is explained below with particular emphasis on the adaptation of noise reduction algorithms, without, however, restricting them exclusively to these applications.

Since different hearing aid wearers often prefer different levels of noise suppression or the individual noise suppression algorithms integrated in their hearing aid depending on the environmental situation, a simple and unambiguous choice of the parameters for adapting these algorithms in the form of a specification after the recognition and / or classification of a Hearing difficult. There remains the need for adaptation, in the course of which the hearing device wearer can incorporate his preferences in each case specific situations in the setting of the algorithms for noise suppression. This can be done according to the invention via a simple interface, which reduces the complexity of the adjustment and can be formed by inventively linked control elements.

The settings are made in this case stepwise and successively, with a continuous improvement of the adjustment of the hearing aid to the prevailing listening situation, a deterioration of the adjustment by making erroneous settings, however, is largely excluded. This makes it easier to find situation-dependent settings for different algorithms, in particular for algorithms for noise suppression, which are optimally adapted to the individual needs of the hearing device wearer in the respective hearing situation. The hearing aid wearer is given the opportunity in this case to adapt the effect of the noise suppression of his preference in the current environmental situation by means of the user interface according to the invention, without having to deal in detail with the mode of operation of the various algorithms and having to make a selection decision.

Advantageously, the adjustments made or the set values of the adjustable parameters, preferably also the effectiveness of different algorithms, in particular those for noise suppression, are logged. This logging can be used to allow the hearing aid via a learning algorithm, a continuous improvement of an automatic adjustment of the hearing aid to changing listening situations and preferences of the hearing aid wearer. For this purpose, when analyzing and / or classifying a hearing situation, it is advantageous to set adjustable parameters which have an influence on the transmission and / or amplification characteristics of the hearing aid, initially set to initial values belonging to this hearing situation and then adjusted after a test of the hearing Effectiveness of the adjustments made in the existing hearing situation and the availability of parameters, which are characterized by a minimum effectiveness, were released in the presence of a minimum effectiveness. The risk of making erroneous settings is also low in this case, since the effectiveness of the adjustment upstream of the adjustment unrecognized or poorly reproducible Adjustments of parameters prevented. In particular, when made adjustments of the parameters are logged and the settings of the parameters are later used as output values to which the adjustable parameters are set, if at a later time a hearing situation is recognized, which is characterized by similar acoustic characteristics or a similar classification serve the user inputs to allow a situation-dependent learning of the respective hearing device wearer preferred settings. In frequently occurring hearing situations, manual adjustment of the parameters gradually becomes superfluous since the optimum parameter set is automatically predefined once the hearing situation has been detected.

The adaptation of the parameters can take place both instantaneously and temporally smoothed. The result of this learning process is stored in the hearing aid and is available after switching it off and on again. As a result, a continuous adjustment to the user-preferred setting is possible until an optimal approach is reached and no further change appears necessary.

The invention offers a number of advantages. On the one hand, hearing aids in complicated listening situations, which are difficult to assess by laypersons, can be tailored in a simple manner to the user's needs in a targeted manner. In hard-to-assess listening situations, the invention can even open up the possibility of having a hearing aid set faultlessly by a layman preferably the hearing aid wearer.

The hearing aid is thereby inevitably set depending on the situation, since only parameters whose influence is evaluated as audible are adjusted. Other parameters remain on the existing values, which can be offered in the form of presets, for example, which reduces the risk of incorrect settings. The adjustment of the hearing aid can also be used in complex listening situations via a simple inter-face, for example, in the form of a single one-dimensional actuator. Such a control element may consist of a simple rotary control or include plus / minus buttons, for example on a communicating with the hearing aid remote control.

On the other hand, by using learning algorithms, a very effective optimization of the hearing aid in different listening situations can take place, which makes further interactions on the part of the hearing aid wearer superfluous even after a short training phase. An advantage of the invention is that even used learning algorithms only have an influence on parameters which are evaluated as being effective and therefore adjustable in a specific hearing situation, which makes it easier to avoid incorrect parameter specifications in certain listening situations. Thus, for example, in an existing hearing situation, no algorithms for noise suppression can be changed inadvertently, which remain ineffective in this hearing situation.

Fig. 1

eine schematische Darstellung eines erfindungsgemäßen Hörgerätes;

Fig. 2

einen Ausschnitt aus einem Programmablaufplan zur Beschreibung des erfindungsgemäßen Verfahrens zum Betrieb eines erfindungsgemäßen Hörgerätes;

Fig. 3

einen weiteren Ausschnitt aus einem Programmablaufplan zur Beschreibung des erfindungsgemäßen Verfahrens zum Betrieb eines erfindungsgemäßen Hörgerätes; und

Fig. 4

einen weiteren Ausschnitt aus einem Programmablaufplan zur Beschreibung des erfindungsgemäßen Verfahrens zum Betrieb eines erfindungsgemäßen Hörgerätes.

In embodiments, the invention is described in detail. Show it:

Fig. 1

a schematic representation of a hearing aid according to the invention;

Fig. 2

a section of a program flowchart for the description of the method according to the invention for operating a hearing aid according to the invention;

Fig. 3

a further detail of a program flowchart for the description of the method according to the invention for operating a hearing aid according to the invention; and

Fig. 4

another section of a program flowchart for the description of the method according to the invention for operating a hearing aid according to the invention.

Fig. 1 shows a schematic representation of a hearing aid according to the invention. This comprises a signal transmission path consisting of an input unit 1 in the form of a microphone, a signal processing and / or amplification unit 2 and an output unit 3 in the form of a loudspeaker. Signals incoming to the microphone can be forwarded in a predetermined manner, for example non-linearly, to the output unit 3 in an amplified manner. Furthermore, further signal processing units 4, 5, 6, 7 are included, in which incoming signals can be changed by a specific algorithm, before they are again fed to the signal processing and / or amplification unit 2 and fed into the signal applied to the output unit 3. The further signal processing units 4, 5, 6, 7 can be applied in terms of hardware, be implemented separately or as part of the signal processing and / or amplification unit 2 and / or exist only in the provision of a corresponding signal processing software. This can be disregarded for the functioning of the hearing aid according to the invention. The different algorithms in the signal processing units 4, 5, 6, 7 may include, for example, algorithms for noise suppression, but also all other forms of signal processing, which are aimed at in hearing aids concern. In order to be able to influence the effectiveness of the contained algorithms, positioning possibilities are created by means of which one or more parameters on which the effectiveness of the respective algorithm depends can be varied. Furthermore, a linking element 8 is included, which can make a connection of individual signal processing units 4, 5, 6 or 7 with an actuating element 9. This linking takes place after an evaluation of the effectiveness of the algorithms acting in the respective signal processing units 4, 5, 6 and 7 in a specific hearing situation and in dependence thereon. The linking element 8 comprises those for evaluating the effectiveness the means required in the respective signal processing units 4, 5, 6 and 7. In the example shown here, this means, for example, that the algorithm with the greatest effectiveness of the algorithm contained in the signal processing unit 4 Alg _{1 was} determined as an algorithm and only this algorithm can be influenced or optimized by the actuator 9 in its effectiveness, since the Links between the actuator 9 and the other signal processing units 5, 6 and 7 (shown in phantom) are interrupted at this time.

The determination of the effectiveness can be done in different ways. In a recognized or classified hearing situation, which can always be described by specific spectra, it is possible, by using different models, which describe the effect of the parameters and / or algorithms to be set, their effect or the effect of an adjustment thereof on the amplification and to simulate transmission characteristics of the hearing device in the recognized or classified hearing situation and to calculate the effectiveness in the sense of the invention by comparing the simulated input signals and the simulated output signals, for example. In the presence of an efficient classification and / or recognition system and correspondingly occurring hearing situations, good results can already be achieved in this way.

A further advantageous embodiment of the method according to the invention results when, instead of a classification attempt, real-time detection of the applied auditory situation takes place and applied to input variables of various models which describe the effect of the parameters and / or algorithms to be set. As a result, the effect of these parameters and / or algorithms or the effect of an adjustment thereof on the amplification and transmission characteristic of the hearing aid in the actually detected or measured hearing situation can be simulated and, for example, by comparing the simulated input signals and the simulated output signals, the effectiveness in terms of the invention can be calculated. In this case, a comparison of the actual hearing situation with different already classified hearing situations can be dispensed with, which avoids the majority of problems with regard to the recognition accuracy in the assignment of auditory situations.

The method according to the invention can be carried out completely independently of the quality of mathematical models if, instead of a simulated effect of the parameters to be tested, an actual determination of the change in an incoming signal by an algorithm to be set is made in a specific auditory situation. In this way, a particularly accurate determination of the effectiveness of a parameter and / or algorithm for signal processing can be realized.

A direct detection of the effectiveness of an algorithm in a particular hearing situation can be given priority at least when it is concluded from a determined effectiveness at the same time on the required effectiveness of a parameter adjustment to be made, this algorithm to release this adjustment by linking the invention with an actuator. If, on the other hand, the effectiveness of an adjustment to be made is to be determined, since the effectiveness of an algorithm in a specific hearing situation and setting is not regarded as an indication of an effectiveness of the adjustment itself, model-based methods, as described above, are to be used advantageously.

The individual aspects of determining the effectiveness of an adjustment or adjustment of a parameter or algorithm can advantageously be combined with one another. For example, a direct assessment of the effectiveness of an algorithm in a given listening situation can be made with a classification system for classifying Hearing situations are combined, whereby actually determined efficiencies of adjustment are linked to the classified hearing in each case.

The determination of the effectiveness can take place both event-bound at the moment of a user input, as well as continuously over the period before or after the user input.

Fig. 2 shows a section of a program flowchart for the description of the method according to the invention for operating a hearing aid according to the invention. The determination of the effectiveness of an algorithm Alg ₁ contained in a signal processing unit 4 in a specific hearing situation is shown schematically. For this purpose, an input signal, which is supplied to this signal processing unit 4, simultaneously a comparison unit 10 is supplied, in which a comparison of this input signal with the output signal of the signal processing unit 4 is made after it has been subjected to the algorithm Alg ₁ . From a comparison operation, a parameter W _{Alg1 is} derived, which allows a quantitative and / or qualitative estimation of the effectiveness of the algorithm Alg ₁ in the respective auditory situation. The parameter referred to as effectiveness in the present invention may include any quantitatively detectable parameter that allows for a clear description of the effect that a particular algorithm has on an incoming signal during signal processing. As a measure of effectiveness, for example, the average gain reduction of a channel in a defined period of time, for example 1 minute, may serve before or after a user input. Alternatively or additionally, however, instantaneous values can also be evaluated in real time.

The assignment of a specific efficacy parameter to an algorithm to be traversed by an input signal in a given auditory situation constitutes a core area of the present invention. The illustrated sequence of program steps can be integrated one or more times in program sequences which are suitable for carrying out the method according to the invention, wherein in the comparison operations both directly measured or applied as well as in the manner shown model-based input and output signals can be included.

The determination of the effectiveness of signal processing algorithms and dependent blocking or release of corresponding adjustment options can also be used advantageously for the application of learning algorithms. With regard to intelligent noise suppression, this means that only the components of the noise reduction that inevitably affect the signal in the respective situation in accordance with the estimated effectiveness are taken into account by the respective learning algorithm. For example, if there is a windless situation, the wind noise reduction algorithm will not affect the signal and is therefore ineffective. Also, adjustments to the algorithm for wind noise reduction are ineffective and can not be varied according to the invention. Therefore, the learned or instantaneous setting of the wind noise reduction is left unchanged in this concrete situation.

Fig. 3 shows a further detail of a program flowchart for describing the method according to the invention for operating a hearing aid according to the invention. An incoming signal passes sequentially through two different algorithms, for example two algorithms for noise suppression. Parallel to the signal processing in the signal processing units 4, 5 is already in Fig. 2 described determination of the effectiveness of the individual algorithms made in a prevailing listening situation by an off / on comparison. This makes it possible to determine the algorithm Alg _x , which is characterized in the hearing situation by the greatest effectiveness W _Algx . This algorithm is then connected by linking the corresponding signal processing unit with an actuator 9 is released for further adaptation to the respective hearing situation, whereby the corresponding adaptation by a change of parameters which influence the operation of the algorithm W _Algx can be made. These processes can be run through several times in the form of a loop. This automatically takes into account that due to a possibly changed effectiveness of an algorithm as a result of the adjustments made, another algorithm involved in the signal processing could be preferred for the linkage with the actuating element. In this way, adjustments of hearing aids can be made with, for example, only one control element, to which successive parameters of different algorithms are assigned as manipulated variables. By a repeated operation of such a linked control element can be made to actual hearing situations, without precise knowledge of the actual parameters actually set, a simple and comfortable adaptation of the hearing.

Fig. 4 shows a further detail of a program flowchart for describing the method according to the invention for operating a hearing aid according to the invention. In this embodiment, in addition to checking the effectiveness of an algorithm and linking an actuating element with the associated signal processing unit, the effectiveness of an adjustment of the actuating element is checked before the adjustment is actually released. For this purpose, a preferably discretely adjustable parameter of an algorithm for signal processing is adjusted in order to increase or decrease the effectiveness of the algorithm which can be influenced in this way. Together with an unchanged setting, it is checked by an off / on comparison to be made whether or not an adjustment of the relevant parameter brings about an effect, which corresponds to the check as to whether this adjustment is associated with a minimum effectiveness. This is expedient in cases in which a current setting in a specific hearing situation already results in an optimal functioning or effectiveness of a signal processing algorithm. It is therefore checked whether a desired effect in the form of an improvement of the effectiveness of the respective algorithm can be achieved by a further adjustment to be made. The release of the corresponding settings can thus also be asymmetrical, ie settings are released so that they can only follow a certain trend, but remain locked in the opposite direction. As a result, configurations can be realized in which two different algorithms can simultaneously be optimized via an adjustment element by adjusting corresponding input parameters and adapted to the respective hearing situation if the expected trends of the settings to be made correspond to opposite adjustment directions of the control element. In this case too, it is possible to work with situation-dependent specifications by identifying the existing hearing situation. On the basis of respectively given parameter settings, in this case, for example, an increase or reduction of the noise suppression is only permitted or realized if an actual change in the effect above a defined threshold is thereby achieved. The settings to be checked can actually be made and reset and blocked if their effectiveness is too low. Alternatively, the settings to be tested can be simulated.

Will the process steps out Fig. 2 to 4 Combined with each other and repeatedly executed, it can be optimized and adapted to a listening situation by means of inventive and constantly changing combination of a single variably assignable control element with different adjustable parameters during repeated operation of this control element a variety of parameters and signal processing algorithms. For this it is not necessary that the hearing aid wearer knows the current linkage. The momentarily most effective adjustment of a parameter is automatically made with each actuation, the effect of this adjustment being in the next determination of the most effective algorithm. The adjustment of the hearing aid is completed in the respective hearing situation when no adjustment with a predetermined minimum effectiveness can be determined more. The method according to the invention consists in this particularly advantageous case in that a quantitative determination of the effectiveness of potential adjustments of parameters in an existing hearing situation is made and at least one control element is linked with circuitry arrangements such that the adjustment is always carried out with each actuation of the control element 9, which shows the greatest effectiveness in this operation of the control element at the moment of adjustment. This results in the maximum achievable simplification of the setting of a hearing aid and reducing the number of required control elements.

Advantageously, individual variably assignable control elements can be provided for setting for intuitively linked groups of parameters or signal processing algorithms. For example, a variably assignable actuator for the inventive adjustment of all noise reduction algorithms that are integrated into a hearing aid, be provided.

Claims (17)

Adjustable hearing device, on which at least one parameter that has an influence on the transmission and amplification characteristics of the hearing aid can be adjusted, wherein means (8) are included, which examine the effectiveness of an adjustment of this parameter in each existing hearing situation by a simulation , and means (8) are included, which enable the adjustment of this parameter in the presence of a minimum effectiveness. Adjustable hearing aid according to claim 1, characterized in that the means (8) for enabling the adjustment possibility means for circuitry connection of the adjustable parameter with a variably assignable control element (9). Adjustable hearing aid according to claim 1 or 2, characterized in that a plurality of parameters which may have an influence on the transmission and amplification characteristics of the hearing aid, can be adjusted after the effectiveness of the adjustments to be made in each case existing hearing was tested by simulation and at If there is a minimum effectiveness, the adjustment options of the parameters have been enabled. Hearing aid according to one of claims 1 to 3, characterized in that at least one parameter that has an influence on the effectiveness of algorithms, can be adjusted after the effectiveness of the adjustment to be made in the existing hearing situation was checked by simulation and in the presence of a Minimum effectiveness the adjustment of the parameter has been enabled. Hearing aid according to one of claims 1 to 4, characterized in that the number of adjustable parameters that may have an influence on the transmission and amplification characteristics of the hearing aid, the number comprehensively variable Assignable control elements (9) exceeds, wherein means (8) are included to perform a quantitative detection of the effectiveness of potential adjustments in each existing hearing situation and the control elements (9) to be linked with circuitry arrangements that the released adjustments that on the respective Stellelement can be made, depending on their effectiveness in descending order. Hearing aid according to one of claims 1 to 5, characterized in that a variably assignable adjusting element (9) is included, which can be linked in terms of circuitry with all adjustable parameters. Hearing aid according to one of claims 1 to 5, characterized in that a variably assignable control element (9) is included, which can be linked in terms of circuitry with all adjustable parameters that have an impact on the effectiveness of algorithms for noise reduction. Hearing aid according to one of claims 1 to 7, characterized in that at least one of the variably assignable adjusting elements (9) is designed as a one-dimensional control element. Hearing aid according to one of claims 1 to 8, characterized in that at least one of the variably assignable adjusting elements (9) is designed as an actuating element of a remote control. A method for adjusting a hearing aid, in which at least one parameter that has an influence on the transmission and amplification characteristics of the hearing aid, is adjusted after tested by a simulation, the effectiveness of an adjustment of this parameter in each existing hearing situation and in the presence of a minimum effectiveness this adjustment of the parameter has been enabled. A method according to claim 10, characterized in that a plurality of parameters that may have an influence on the transmission and amplification characteristics of the hearing aid are adjusted after tested by simulation, the effectiveness of the adjustments in each existing hearing situation and in the presence of a minimum effectiveness, the adjustment of the Parameters that are characterized by a minimum effectiveness have been unlocked. A method according to claim 10 or 11, characterized in that several parameters that can have an influence on the effectiveness of algorithms are adjusted after tested by simulation, the effectiveness of the adjustments in each existing hearing situation and in the presence of a minimum effectiveness, the adjustment of the parameters , which are characterized by a minimum effectiveness, have been unlocked. Method according to one of claims 10 to 12, characterized in that a hearing situation is analyzed and / or classified, adjustable parameters that have an influence on the transmission and / or amplification characteristic of the hearing aid, set to belonging to this hearing situation output values and then adjusted can be tested by simulating the effectiveness of the adjustments in the existing hearing situation and, if a minimum effectiveness is available, enabling the adjustment possibilities of the parameters, which are characterized by a minimum effectiveness. A method according to claim 13, characterized in that made adjustments of the parameters are logged and the settings of the parameters are used as output values to which the adjustable parameters are set when detected at a later time a hearing situation which is characterized by similar acoustic characteristics or classification as the listening situation in which the adjustments were made. Method according to one of Claims 10 to 14, characterized in that a quantitative determination of the effectiveness of potential adjustments of parameters in an existing auditory situation is made and at least one actuating element (9) is linked to circuitry arrangements (4, 5, 6, 7), that released adjustments, which can be made via the respective actuator, are made in descending order depending on their effectiveness. Method according to one of Claims 10 to 15, characterized in that a quantitative determination of the effectiveness of potential adjustments of parameters in an existing auditory situation is made and at least one actuating element (9) is linked to circuitry arrangements (4, 5, 6, 7), that at each actuation of the actuating element (9) always the adjustment is made, which shows the greatest effectiveness in this operation of the actuating element at the moment of adjustment. Method according to one of claims 1 to 16, characterized in that the adaptation of the parameter takes place smoothly timed.

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