CN100337512C - Hearing aid and a method for testing a hearing aid - Google Patents

Abstract

A hearing aid (10) with a test controller (44) for detection of a defect in the signal path of the hearing head is provided. The test controller controls a test signal generator (40) and a probe means (42) for determination of a signal parameter, such as signal level, frequency spectrum, phase characteristic, auto-correlation, cross-correlation, etc. A set of signal switches (361,...,36p) controlled by the test controller is provided for connecting a desired test signal generator or a desired probe means to a desired point in the signal path for testing of a desired part of the hearing aid. Futher signal switches (18) are provided for coupling hearing aid components into and out of the signal path of the hearing aid.

Description

Hearing aids and the method that is used to test hearing aids

Technical field

The present invention relates to the test of hearing aids and hearing aids.The invention particularly relates to a kind of hearing aids with self-test function.

Technical background

It is well known that in the hearing aids field, large quantities of hearing aidss that are returned maintenance are proved to be to correctly working.So under many circumstances, do not relate to the defective of hearing aids, and relate to the adjusting and the use of hearing aids about the perceptible problem of hearing aids.Transporting and diagnosing on the hearing aids that does not have defective and just wasted a large amount of time and other resources.

Therefore people's expectation provides a kind of hearing aids with self-test function, can allow the appropriate functional of operator's verification hearing aids of a hearing aids.The operator of hearing aids can be the hearing aids user with dysaudia, also can be one hearing aids is assembled, and finely tunes or carry out the audiologist of other work.

Summary of the invention

According to the present invention, in first aspect, the invention provides a kind of hearing aids, described hearing aids has an input transducer, be used for converting an acoustics input signal to one first signal of telecommunication, a signal processor, it is used for by producing one second signal of telecommunication according to first signal of telecommunication, compensate the deficiency of hearing, an output transducer, be used for converting secondary signal to sound, a probe that is used for determining signal parameter runs through the input transducer in hearing aids, a plurality of signaling switches of each point on the signal path of signal processor and output transducer, with a test manager, its setting that is suitable for the control signal switch is probe is connected to first point on the selected signal path, to carry out the test process to selected portion on the signal path.

According to the present invention, in second aspect, the invention provides the method for the function that is used for a hearing aids of verification, this hearing aids has an input transducer, be used for converting an acoustics input signal to one first signal of telecommunication, a signal processor, be used for compensating the deficiency of hearing by second signal of telecommunication that produces according to first signal of telecommunication, an output transducer, be used for converting secondary signal to sound, a probe that is used for determining signal parameter, this method comprise be provided at hearing aids in run through the input transducer, a plurality of signaling switches of each point and use a test manager on the signal path of signal processor and output transducer, with the setting of control signal switch probe is connected to first point on the selected signal path, to carry out test process to selected portion on the signal path.

And hearing aids also comprises a test controller or a test manager, be used to detect the malfunction of hearing aids, test manager can be connected to one such as an audio-frequency generator, a noise generator, a digital word generator, Deng test and excitation generator (teststimulus generator), one is used for determining signal parameter, for example, signal level, frequency spectrum, phase property, automatically relevant, the probe unit of crosscorrelation etc., and a signaling switch that in hearing aids, is provided.This signaling switch is provided for a test and excitation generator or probe is connected on the selected point on the signal path, thus the selected part of test hearing aids.And signaling switch also is provided for the signal path that the hearing aids element is coupled into or is coupled out hearing aids.

Signal path comprises the element and the transmission path of hearing aids, and it receives, the signal of handling and transmitting first signal of telecommunication that comes from hearing aids.

For example, test manager can be used to operate each signal path switch, make the input transducer disconnect at the porch and the signal path of hearing aid processor, and activate probe unit and on a selected or specific point of the last stages of signal path, determine signal level, wherein can be determined by the noise level that various piece produced such as the hearing aid processor of input circuit.

The value of a determined signal parameter of probe can be compared from a memory of hearing aids or the reference value of recovering from the external equipment of a hearing aids with one.If the value that detects is positioned at outside the predetermined scope that comprises this reference value, test manager can warn this hearing aids of user of hearing aids that fault has taken place, and the type of defective also can be by signalling.For example, thus output transducer can produce an audio frequency or a series of audio frequency shows that to the dysaudia user fault has appearred in this hearing aids.The audio frequency of an a kind of special audio frequency or a special sequence can be corresponding to a special defective.

If hearing aids is connected to the audio helper equipment with a display, hearing aids exists the fact of fault to be indicated on the display, and the sign of fault type also can be shown.For example, if noise level greater than a predetermined reference value, it can be shown that there has been fault in hearing aids by signalling.

Typically, auditorily handicapped is special with frequency change for each user.A multichannel hearing aids is provided, and wherein processor is divided into a plurality of channels, thereby makes each frequency band for example, to be utilized different gains to amplify by different processing, is known by the people in this field.A multichannel hearing aids may further include a bank of filters with band pass filter, be used for first signal of telecommunication is divided into derivation first signal of telecommunication of one group of bandpass filtering, thereby and processor can be used to derive the phase Calais and produce second signal of telecommunication second signal of telecommunication is provided by each being derived filtering after first signal of telecommunication filtering is handled respectively and will be handled.For a multichannel hearing aids, test manager can be used to selectively the probe of the test and excitation generator of an expectation or an expectation is connected to the output of a selected band pass filter.For example, a probe that is used for horizontal detection can be connected to the output of a selected band pass filter, thereby determines noise level on each frequency band.

In one embodiment of the invention, the test and excitation generator is provided, and it is controlled by test manager, is used to produce a predetermined test and excitation that is transported to the output transducer of hearing aids, is used to be converted into a voice signal.For a kind of test-types, hearing aids can be placed in the compartment with sclerine, thereby wherein the voice signal that produces of a part will be reflected and be received by sound input transducer.Test manager further is used to operate a signaling switch and makes it a selected probe, and for example, a horizontal detector etc. are connected to output transducer, is used for determining a signal parameter, for example, and the signal level of first signal of telecommunication that each produced.

The determined value of signal parameter can further compare with the reference value that comes from a memory in the hearing aids, if and detected value departs from reference value, so test manager can, as previously mentioned, the warning hearing aids this hearing aids of user had fault.The type of fault also can be by signalling.For example, the display of sequencing equipment can show a message, and this message shows that the just detected problematic port of input transducer should be examined owing to earwax.

An input transducer that is connected to signal path can be a pick-up winding.Pick-up winding in this hearing aids can be with testing to the previous described similar mode that is used for acoustics input transducer, and this is because output transducer produces the powerful magnetic field that picked coil picked up usually.

In the embodiment with a bank of filters, probe can be connected to the output of a selected band pass filter, thereby determines the signal level that first electrical signal filter produces in frequency band corresponding.Thereby also can continuing to be connected in the output of a plurality of or whole band pass filters, probe in a plurality of or whole frequency bands, determines just detected problematic signal parameter.By this way, the frequency spectrum of first signal of telecommunication of generation can be determined, and perhaps harmonic distortion can be determined.For example, test manager can be used to be used for the output of band pass filter that selected probe that level determines is connected to the third harmonic of the output of picking up the test and excitation generator that is used for determining harmonic distortion with one.

Signaling switch can be provided for and will be connected to the input of signal processor such as the test and excitation generator of a sound generator, and the output that is used for a probe is connected to signal processor, thereby the gain of signal processor can be determined.And the gain of signal processor can be determined the function as this frequency.

And the compression of signal processor promptly as the gain of the function of input level, can be determined, for example, and as the function of frequency.

Know that in the prior art comprise an adaptive feedback compensator (adaptive feedback canceller) in hearing aids, it comprises a matched filter, be used for the compensating sound feedback.Sound feedback can take place under the input transducer of hearing aids receives and detected the situation of the voice output signal that output transducer produced.The amplification of detection signal can cause producing a stronger acoustic output signal, and it can be recycled to input, and final hearing aids can shake.Matched filter estimation comprise the acoustics propagation path from output transducer to the input transducer hearing aids from outputing to the transfer function of input.The input of matched filter is connected to the output of hearing aids, and matched filter calculates one and suitable should interrogate signal (countersignal), and this signal is deducted the signal that compensates any acoustic feedback from the input transducer signal.A kind of hearing aids of such type is disclosed in the middle of the U.S. Pat 5402496.

Test manager can be used to the operation of the adaptive feedback compensator of verification, and for example, test manager can be controlled a signaling switch feedback compensator is disconnected from signal path, and increases the gain of signal processor, takes place up to concussion.In this test, hearing aids preferably is placed in the middle of the compartment with sclerine.Test manager can further be used to adaptive feedback compensator and signal path are reconnected, if wherein adaptive feedback compensator is working properly, concussion should stop.

In one embodiment, hearing aids comprises a test and excitation generator, be used for a digital signal is injected into selected second of on the numerical portion of signal path of hearing aids one, for example, on the input point of signal processor.

Be injected on second in response to signal, the hearing aids of an operational excellence will be created in selected signal with particular parameter value of first last generation of signal path.This parameter can with frequency, amplitude, frequency spectrum, modulation, phase places etc. are relevant.These parameter values can with undertaken by hearing aids a known operational excellence one similarly the resulting normal value of test (canonic values) compare.Test manager is further adapted for compares the parameter value of actual response signal with signals specification, thereby determines whether hearing aids exists fault.If detected value is positioned at outside the predetermined scope that comprises each normal value, there has been fault in the tested hearing aids of just can reaching a conclusion.The appearance of fault can be notified to the operator of hearing aids as previously mentioned by signalling.

By the user activation that is installed in the switch on the hearing aids shell is started a self-test process, this switch also can be positioned on the audio helper equipment, is used to control the remote control unit of hearing aids, and is perhaps first-class at a fixed system.Preferably have two switches whiles or excitation successively, thereby avoid the accidental activation of self-test.

Other purposes of the present invention with those skilled in the art by hereinafter to becoming clear in the more detailed description of the present invention.By the mode of embodiment, illustrated and described a preferred embodiment of the present invention.Should be understood that the present invention can adopt other embodiment, and it can have various changes in not deviating from scope of the present invention.

The accompanying drawing simple declaration

In conjunction with several specific embodiments and the drawings, the present invention will obtain describing in detail, wherein:

Fig. 1 has shown the block diagram according to hearing aids of the present invention, and

Fig. 2-5 has shown according to the present invention the self-test information on each sequencing equipment that is displayed on hearing aids, and

Fig. 6 has shown testing setup according to an embodiment of the invention.

Accompanying drawing 1 has shown ahearing aids 10, and two acoustics microphones 12,14 and an electromagnetism pick-up winding 16 that it has as the input transducer are also referred to as a long distance coil (telcoil).A signaling switch matrix 18 optionally is connected to a selected A/D converter 20,22 with each input transducer 12,14,16.In order to simplify, the output connection of second A/D converter 22 is not illustrated.The output signal 24 that comes from A/D converter 20 is divided into one group by one group of band pass filter 26 is derived bandpass filtered signal 24₁, 24₂..., 24_nThereby processor 28 is divided into a plurality of channels makes each frequency band for example, to be utilized different gains to amplify by different processing.Processor 28 is by deriving first signal of telecommunication filtering 24 to each₁, 24₂..., 24_nIndividual processing and will handle after signal of telecommunication phase Calais produce secondary signal 30.A D/A converter 32 converts digital output signal 30 to analog signal 34.An output transducer 38 converts analog signal 34 to sound.

For a person skilled in the art, clearly the circuit shown in Fig. 1 can utilize numeral or analog circuit, and perhaps their combination in any realizes.In the present embodiment, Digital Signal Processing is used, and like this, signal processor 28 and bank of filters 26 are digital signal processing circuits.In the present embodiment, all digital circuits in thehearing aids 10 can realize on an independent digital signal processing chip that perhaps this circuit can be distributed in other mode on a plurality of integrated circuit (IC) chip.

Signaling switch 36₁, 36₂... 36_pOn a plurality of points on the signal path of hearing aid circuit, be provided, these circuit are used for a test and excitation generator 40, for example, and a speech synthesizer 40, perhaps probe 42, for example horizontal detector 42 is connected on a plurality of points of signal circuit of hearing aids 10.Test manager 44 control signal switches 36₁, 36₂... 36_pSetting, thereby the test process of various piece of the signal path of management hearing aids 10.In order to simplify, with test manager 44 and each signaling switch 36₁, 36₂... 36_pThe control line that couples together does not show in Fig. 1.Test manager 44 further control signal switch matrix 18 are used to connect microphone 12,14 and pick-up winding 16 and their signal paths withhearing aids 10 are separated.And test manager 44 is used to control test and excitation generator 40, for example produces a selected frequency, for example the signal of telecommunication of 1kHz for example, utilizes a selected amplitude and/or frequency modulation(FM), and thereby control probe 42 is determined a selected signal parameter, for example rms value.

Test manager 44 can comprise a memory that is used for storage, the type identification of storage such as hearing aids, the normal value data of the calibration data of transducer and test parameter.

For example, the noise level in second frequency band can will be imported all inputs 12,14,16 and A/D converter 20,22 disconnections of transducer by control signal transition matrix 18, and horizontal detector 40 is connected to band pass filter 26₂Output 24₂And determined by test manager 44.Then, first of acoustic transducer is connected to each input, and level output signal is determined.Next, first acoustic transducer is disconnected, and second acoustic transducer is connected to each input and level output signal is determined.Level can be compared.Therefore suppose the noise circumstance of a stable state, level should be similar, and difference has just shown that in the acoustics input transducer one or the input that each links to each other exist a calibration error or a fault.

In a further test phase, long distance coil be connected to each A/D converter and level output signal detected.Because the long distance coil can pick up the electromagnetism background noise usually, the level that level output signal can be supposed to when not having the long distance coil is different.If not poor the generation can be supposed to have a fault at long distance coil or the input that is attached thereto.

Usually, test manager 44 can control signal switch 36₁Test and excitation generator 40 being connected to the input of signal processing circuit 26,28, and simultaneously this input and other signal source are disconnected, and signaling switch 36₄Probe 42 is connected to the output of signal processor 28, thereby makes that any test of performed signal processing rule can more or less freely carrying out in signal processing circuit 26,28.For any specific test and excitation that is produced by test and excitation generator 40, can be stored in the memory (not shown) in thehearing aids 10 by the normal value that a similar test and excitation is applied to the output signal that a signal processor that is known as obtains.Like this, in a test process,, test manager 44 determines whetherhearing aids 10 exists fault thereby can comparing the parameter of the output signal of detected signal processor 28 with corresponding normal value.

One is used at signaling switch 36₂The interrupt signal path 30 before, and the signaling switch 36 controlled of tested manager 44₃Be further provided.Intercepted signal 30, test manager excitation audio-frequency generator 40 produces a selected frequency, the signal of 1kHz for example, and the output transducer 38 that this signal is sent tohearing aids 10 is used to convert to a voice signal.In this test process,hearing aids 10 will be placed in the middle of the compartment with a sclerine, thereby the major part of the feasible voice signal that produces is received by sound input transducer 12,14.Test manager 44 further control signal switches 36_iOne that probe 42 is connected in the sound input transducer 12,14 is used for determining that each derives the signal level of first signal of telecommunication in each frequency band i.

With reference now to Fig. 6, testing setup according to an embodiment of the invention is described.In this was set,hearing aids 10 was connected to asequencing equipment 50 by acable 53, and was placed in the middle of thecompartment 51 of a upper end open withsclerine.Compartment 51 can be to have any compartment that at least a portion transducer output signal can be reflexed to the ability of microphone.A diameter 70mm, height 100mm, wall thickness 0.3mm has the top opening, and the stainless steel cup minor structure of the cylinder form of flat closed bottom has been found to be only.Hearing aids is simply placed on any direction of bottom of cups.

When receiving signal 48 from exciting bank 46, self-test is just started.Exciting bank can be made of one or more switch in the shell that is placed onhearing aids 10, perhaps exciting bank can comprise the interface arrangement that is used to receive from the order 49 of external devices, external devices is a remote control unit for example, anaudio helper equipment 50 that is used for the sequencing hearing aids, a permanent plant, people's computer etc. one by one, this order is used for from an external device start self-test.

For example,hearing aids 10 can be connected to anaudio helper equipment 50 with display 52.The operator can be by pressing next special button onsequencing equipment 50, perhaps one group ofbutton 54 starts self-test.Thisequipment 50 shows that it has been ready to carry out a self-test and has handled then, as shown in Figure 2.Excitation self-test by button 56 begins then.Sequencing equipment transmits a corresponding order to the exciting bank 46 ofhearing aids 10, and shows that self-test is in processing, as shown in Figure 3.

In this test process, information can be displayed on the display.This information can require the user to carry out interaction.For example, the test of part description can show a signal that is picked up that lacks in the microphone 12,14 in front.A possible reason is that the input port that is connected to each microphone is blocked by earwax.Like this, the operator just is required to check whether have problems (with reference to figure 4).If do not disclose problem in the self-test process, a corresponding message just is revealed so, as shown in Figure 5.

The input transducer that is connected to signal path can be a pick-up winding 16.Pick-up winding 16 in thehearing aids 10 can be tested like that as acoustics input transducer 12,14, and this is because output transducer 38 produces a significant magnetic field of can picked coil 16 being picked up usually.

Test manager 44 control signal switch matrix 18 will be imported transducer 12,14, and 16 all inputs and signal path disconnect, and by signaling switch 36₁Test and excitation generator 40 is connected on the signal path.Probe 42 is by signaling switch 36₄Be connected to the output of signal processor 28.Produce the signal that a sequence has different frequency by control test and excitation generator 40, the gain of signal processor 28 just is determined the function as this frequency.

And the compression of signal processor 28 promptly, can be determined as the gain of the function of input level, for example, and as the function of frequency.

Claims (36)

1. hearing aids, it has the input transducer, is used for the acoustics input signal is converted to first signal of telecommunication; Signal processor is used for by producing the deficiency that second signal of telecommunication compensates hearing according to first signal of telecommunication; Output transducer is used for converting secondary signal to sound; Probe is used for determining signal parameter, is arranged in hearing aids and runs through the input transducer, a plurality of signaling switches on the each point of the signal path of signal processor and output transducer; And test manager, it is suitable for the setting of control signal switch, probe being connected on selected first of signal path, thereby carries out the test process of the selected part of signal path.

2. hearing aids according to claim 1, wherein test manager is suitable for the remainder of described input transducer and described signal path is disconnected, and encourages described probe, thereby determines the signal level on described selected first.

3. hearing aids according to claim 1 comprises a test and excitation generator of being controlled by described test manager, is used for applying test and excitation on second of described signal path.

4. hearing aids according to claim 2 comprises a test and excitation generator of being controlled by described test manager, is used for applying test and excitation on second of described signal path.

5. hearing aids according to claim 3, wherein said test manager are suitable for and will compare with normal value at the signal parameter of described selected first generation, thereby determine whether described hearing aids exists fault.

6. hearing aids according to claim 4, wherein said test manager are suitable for and will compare with normal value at the signal parameter of described selected first generation, thereby determine whether described hearing aids exists fault.

7. hearing aids according to claim 3, thus wherein second selectedly make described test and excitation be converted into voice signal, and wherein test manager is suitable for described probe is connected with described input transducer.

8. hearing aids according to claim 4, thus wherein second selectedly make described test and excitation be converted into voice signal, and wherein said test manager is suitable for described probe is connected with described input transducer.

9. hearing aids according to claim 5, thus wherein second selectedly make described test and excitation be converted into voice signal, and wherein said test manager is suitable for described probe is connected with described input transducer.

10. hearing aids according to claim 6, thus wherein second selectedly make described test and excitation be converted into voice signal, and wherein said test manager is suitable for described probe is connected with described input transducer.

11. hearing aids according to claim 1, described input transducer comprise two acoustics input transducers, wherein said test manager is suitable for definite signal level and each signal level of comparison about each described acoustic transducer.

12. hearing aids according to claim 1, described input transducer comprise an electromagnetism input transducer.

13. hearing aids according to claim 1, comprise a bank of filters with band pass filter, be used for described first signal of telecommunication is divided into first signal of telecommunication that one group of bandpass filtering is derived, wherein said processor is suitable for producing second signal of telecommunication, its by handling each derivation respectively described first signal of telecommunication and will handle after signal of telecommunication phase Calais described second signal of telecommunication is provided, and wherein said test manager is used to selectively described probe is connected on the output of a described band pass filter.

14. hearing aids according to claim 13, thereby wherein said test manager is suitable for described probe is connected to the output of a described selected band pass filter picks up the 3rd harmonic wave of described test and excitation generator output, is used for determining of harmonic distortion.

15. hearing aids according to claim 2, wherein said test manager is suitable for verification from comprising the gain of described signal processor, at least one parameter that chooses in the group as the compression of the gain of the described signal processor of the function of frequency and described signal processor.

16. hearing aids according to claim 2 comprises adaptive feedback compensator, is used to suppress acoustic feedback, and wherein said test manager is used to the operation of the described adaptive feedback compensator of verification.

17. any described hearing aids according to claim 2 to 16 comprises being used to activate the active device that described test manager starts described self-test.

18. hearing aids according to claim 17, wherein said active device comprises interface arrangement, and it is suitable for from being used to operate the remote control of described hearing aids, and the programme sequencing equipment of described hearing aids of fixture or be used to receives order.

19. a method that is used for the function of verification hearing aids, this hearing aids has the input transducer, is used for the acoustics input signal is converted to first signal of telecommunication; Signal processor is used for by producing the deficiency that second signal of telecommunication compensates hearing according to described first signal of telecommunication; Output transducer is used for converting described secondary signal to sound; Probe is used for determining signal parameter; This method is included in and runs through described input transducer in the described hearing aids, provide a plurality of signaling switches on each point of the signal path of described signal processor and described output transducer, and use the setting of a test manager control signal switch, described probe is connected on selected first of described signal path, thereby carries out the test process of the selected part of described signal path.

20. method according to claim 19 comprises and uses the remainder disconnection of described test manager with described input transducer and described signal path, and activates described probe, thereby determines the signal level on described selected first.

21. method according to claim 19 comprises and uses test and excitation generator of described test manager control, thereby apply a test and excitation on second of described signal path.

22. method according to claim 20 comprises and uses test and excitation generator of described test manager control, thereby apply a test and excitation on second of described signal path.

23. method according to claim 21 comprises and will compare with normal value at the signal parameter of described selected first generation, thereby determines whether described hearing aids exists fault.

24. method according to claim 22 comprises and will compare with normal value at the signal parameter of described selected first generation, thereby determines whether described hearing aids exists fault.

25. method according to claim 21, thereby comprise and select obtain described test and excitation and be converted into voice signal at described second, described probe is connected with described input transducer, described hearing aids is placed in the compartment with sclerine, and determines the signal that described input transducer is picked up.

26. method according to claim 22, thereby comprise and select obtain described test and excitation and be converted into voice signal at described second, described probe is connected with described input transducer, described hearing aids is placed in the compartment with sclerine, and determines the signal that described input transducer is picked up.

27. method according to claim 23, thereby comprise and select obtain described test and excitation and be converted into voice signal at described second, described probe is connected with described input transducer, described hearing aids is placed in the compartment with sclerine, and determines the signal that described input transducer is picked up.

28. method according to claim 24, thereby comprise and select obtain described test and excitation and be converted into voice signal at described second, described probe is connected with described input transducer, described hearing aids is placed in the compartment with sclerine, and determines the signal that described input transducer is picked up.

29. method according to claim 25, comprise that the test manager that uses in the hearing aids determines the signal level about each described acoustic transducer, and each described signal level is compared, and the described input transducer of described hearing aids comprises two acoustics input transducers.

30. method according to claim 26, comprise that the test manager that uses in the hearing aids determines the signal level about each described acoustic transducer, and each described signal level is compared, and the described input transducer of described hearing aids comprises two acoustics input transducers.

31. method according to claim 27, comprise that the test manager that uses in the hearing aids determines the signal level about each described acoustic transducer, and each described signal level is compared, and the described input transducer of described hearing aids comprises two acoustics input transducers.

32. method according to claim 28, comprise that the test manager that uses in the hearing aids determines the signal level about each described acoustic transducer, and each described signal level is compared, and the described input transducer of described hearing aids comprises two acoustics input transducers.

33. method according to claim 19, comprise and use a bank of filters described first signal of telecommunication to be divided into first signal of telecommunication of deriving behind one group of bandpass filtering with band pass filter, thereby handle described first signal of telecommunication of each derivation and provide described second signal of telecommunication, and use described test manager selectively described probe to be connected to the output of a described band pass filter the signal of telecommunication addition after the described processing.

34. method according to claim 33, comprise and use described test manager that thereby the output that described probe is connected to described selected band pass filter is picked up the 3rd harmonic signal of the output of described test and excitation generator, thereby determine harmonic distortion.

35. method according to claim 20 comprises the gain of using described test manager verification such as signal processor, as the parameter of the compression of the gain of the described signal processor of frequency function or described signal processor.

36. according to any described method in the claim 20 to 34, be included in and use test manager in the described hearing aids, be used for the operation of the described adaptive feedback compensator of verification with an adaptive feedback compensator.

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