Abstract: An electronic device with audio output, such as a television, is adjusted to the customized listening profile of a user with a user interface module 100 and a control module 110. A user sets the level of amplification for the center or test frequency of a number of audio frequency bands. The control module generates tones at the test frequencies and the user adjusts the amplification of each tone until the user is satisfied with hearing that tone. The other frequencies in the band are adjusted by the same amount as the test tone.

Abstract: A neurofuzzy device is described that provides a fuzzy logic based user-machine interface for optimal fitting of programmable hearing prosthesis using a neural network that generates targets to be matched by the hearing prosthesis based on individual audiometric and other relevant data to the specific impairment and on the neural network accumulated learning from previous successful fittings. The incorporated learning process can occur on or off line and implements fitting rationales that can satisfy the needs of a general or specific clientele. The parameters of the programmable prosthetic device are set as a group in order to achieve optimal matching to the targets. The user-machine interface realized by a fuzzy logic system deciphers the commends/responses of the user while listening to various stimuli and modifies the targets accordingly thus, providing a closed loop system for in-situ interactive fitting.

Abstract: A method for providing customized audio data products that includes the steps of (1) storing a machine readable hearing profile for a customer, (2) accepting via a data input device or data network for example, machine readable orders from the customer for a particular audio data product, (3) associating the hearing profile for the customer with the particular audio data product, (4) modifying the particular audio data product according to the hearing profile to produce a customized audio data product, (5) delivering the customized audio data product to the customer, for example via a network or by a machine readable storage medium, (6) accepting feedback from the customer concerning the subjective performance of the customized audio data product, and (7) modifying the hearing profile in response to the feedback is provided.

Abstract: A system for adjusting audio output including a transmitter unit adapted to be carried by a user and a sound generating system. The transmitter unit includes a memory and a signal transmitter. The sound generating system includes a sound generator, a signal receiver, means for altering a sound signal from the signal generator based upon a signal transmitted by the transmitter to the receiver, and speakers connected to the altering means.

Abstract: A storage case that detects and indicates presence of oscillating or quiescent activity of hearing aids is disclosed. Within the storage case, there is a transducer coupled to a logic circuit. The logic circuit is further coupled to one or more visual cues. The transducer picks up any sounds within the storage case and converts the sounds into electrical signals. The logic circuit receives the electrical signals and activates a visual cue that alerts the user if the logic circuit interprets at least one of the electrical signals to be from an oscillating or quiescent activity of the hearing aid.

Abstract: An electrophysiological measurement method and system is provided for positioning an implantable transducer of a hearing instrument relative to a middle ear component or inner ear of a patient. The method and system employ electrophysiological measurement signals obtained in response to test signals applied to an implanted transducer. In one embodiment, the electrophysiological measurements are obtained by an electrocochleography measurement device that measures the cochlear summating potential and/or action potential responsive to test signals applied to an implanted transducer. In another embodiment, an auditory brainstem response measurement device is utilized to obtain electrical potential measurement signals responsive to test signals applied to an implanted transducer.

Abstract: A method for the visualization of the hearing capacity of a person. As a function of audiogram data, text is modified in any of several characteristics, including brightness, contrast, sharpness, and/or omission of letters.

Abstract: An apparatus and method for evaluation of hearing loss is disclosed. The apparatus and method use evoked Auditory Brainstem Responses (ABR) to determine if the subject is able to hear click stimuli that are repeatedly administered. In order to facilitate efficient differentiation of the ABR from the accompanying noise, normative data is used to detect test conditions where physiological, non-physiological, and ambient acoustic noise would interfere with the progression of test.

Abstract: Pathological binaural phase time delay (BPTD) asynchrony is measured at a variety of frequencies and to speech stimuli to develop a BPTD profile for a subject. Then a corrective device (600, 1000) is designed to apply clinical BPTD to compensate for the subject's pathological BPTD. An electronic device (500) is used to measure the subject's ability to comprehend words at a variety of relative time delays between ears to estimate the ideal overall relative time delay. The optimal relative phase shift at a variety of frequencies is also measured. An electronic device (600) may be used to correct the pathological BPTD by delaying sound in different frequency bands differently to the target ear, according to the BPTD profile, or a passive filtered earplug (1000) may be used to correct smaller amounts of BPTD.

Abstract: The application relates to an in-situ method to measure and correct or adjust sound signal presented to the eardrum by means of a hearing aid and a hearing aid employing such a method. The hearing aid comprises at least one microphone (1), at least one digital signal processor (2) for transforming the microphone signal into a transformed signal according to a desired transformation function, a receiver (3), a sensing means (4) for sensing the sound signal appearing in front of the eardrum and at least one comparison mans (5). A model of the electroacoustic system of the ear and the hearing aid is established and stored in the hearing aid, which model simulates the sound signal in the ear canal in front of the eardrum. The model is adapted in response of an error signal generated in case the difference between the representation of the sensed signal and the simulated sound signal and the simulated sound signal is above a predetermined threshold.

Abstract: Provided is a method of automatically fitting a hearing aid. The method includes the steps of entering an audiogram of a test subject, defining criterion gains and SSPLs according to the test subject's audiogram in each test frequency band, generating 70dB SPL long term speech spectrum noise, and measuring the gains and SSPLs of the amplified sound in front of test subject's eardrum using the probe tube microphone, comparing the measured gains and SSPLs with the criterion gains and SSPLs and if the measured gains and SSPLs are less than the criterion gains and SSPLs, increasing the gain and SSPL of the hearing aid and repeating measurement, and if the measured gains and SSPLs becomes equal to the criterion gains and SSPLs, setting the gains and SSPLs of the hearing aid at that time as an actual gain and/or SSPL of the hearing aid and saving the automatic fitting device.

Abstract: Method and apparatus for testing a directional acoustic device such as a directional hearing aid having level-dependent non-linear circuitry, in which two or more speakers are placed at desired positions relative to the hearing aid, e.g. in front and behind the hearing aid. The speakers are excited simultaneously with broadband excitation signals formed from components which are orthogonal to each other, e.g. sinusoids, where the bin frequencies of the Direct Fourier Transform (“DFT”) of one excitation signal are different from the bin frequencies of the other excitation signal. Thus, the response to each excitation signal can easily be extracted without filtering, allowing the directional characteristics of the hearing aid to be evaluated.

Abstract: A digital hearing aid according to the present invention is capable of measuring its own performance. The measurement and initialization capability may be entirely integral to the hearing aid, or an external processor may be used to download the measurement program and the run time program, and assist in computing the parameters. The hearing aid includes a test signal generator for feeding a test signal into the hearing aid amplifier. The response to the test signal is acquired at a specific point in the hearing aid, depending upon what aspect of performance is to be measured. Various elements of the hearing aid and/or the hearing aid feedback may be bypassed. The hearing aid further includes the capability of initializing hearing aid parameters based upon the performance measurements.

Abstract: A method for adjusting a transmission characteristic of an electronic circuit, in a hearing aid. The hearing aid is connected with a computer. The current operating parameters of the hearing aid are transmitted to the computer. The computer from the operating parameters, calculates the current transmission characteristic and represents it on a monitor screen as a three-dimensional graphic diagram. The acoustics specialist, with the help of a mouse, selects a point of a segment of the graphic diagram and modifies the graphically depicted transmission characteristic. As a result the current operating parameters are modified as well. From these, a new current transmission characteristic is calculated and represented on the monitor screen as a three-dimensional graphic. This adaptation process is repeated until the current transmission characteristic coincides with the desired response. Then the current operating parameters are transmitted from the computer to the hearing aid and there stored in memory.

Abstract: A hearing test device and method are disclosed which involve the placement of a testing probe in the ear canal of a test subject. The device analyzes responses to stimuli applied to the ear canal to determine whether the testing probe has been properly placed in the ear canal. The device may determine, for example, whether the probe is stable, whether it is sealed in the ear canal, whether the resulting volume of the ear canal is acceptable, and/or whether the stimuli delivery system is blocked in any way. If the device determines that the testing probe has been properly placed in the ear canal, the device automatically starts a hearing test without requiring any operator input.

Abstract: The invention relates to statistical testing method for the objective verification of auditory steady-state responses (ASSR) in the frequency domain by using a “q-sample uniform scores test” whereby only the phase angles are used. Phase angles computed by Fourier transformation are used in one embodiment example. In another embodiment example, spectral amplitudes and phase angles are used; however, the phase angles remain unranked while ranks for the spectral amplitudes are still taken into account for the test. In yet another embodiment example, the values of the phase angles and of the spectral amplitudes are used directly (unranked) whereby said values are computed by means of Fourier transformation. The invention relates also to a testing device to carry out the statistical test method.

Abstract: An apparatus (100) to aid rehabilitation of hearing deficiencies comprising an electronic apparatus (AE) that has a port (101) for connection to a hearing aid adapter (AP) for programming and calibration of auditory prostheses or hearing aids (PA), said electronic apparatus comprising a central processing unit (UE), a user interface (IU) for sending control signals imparted by the user to said central unit (UC), a display unit (UV) and at least one sound module (MS) for viewing and listening to multimedia filmed material, and a memory unit (UM) for storage of data, multimedia files and software programs.

Abstract: A system and method for using a telephone to reconfigure or readjust the performance characteristics of a hearing aid or to check whether a user has a hearing problem. The telephone is used to generate one or more frequency tests covering the audible spectrum using a DSP contained in the phone, an external computer and/or a hearing aid. The keypad of the phone or keyboard of an attached computer is used as a feedback mechanism. The generated frequencies can be used to test the hearing of a user and the quality (or fit) of a hearing aid while being worn by the user. A local memory may be used to store the results of the tests for future reference or for transmission over the network for analysis at a later time. Once the hearing response of a user wearing the hearing aid has been measured, an updated compensation configuration (audiogram) can be downloaded into the hearing aid via an infra-red link, via a physical connection or a direct audio transmission from the telephone to the DSP in the hearing aid.

Abstract: A hand-held device includes an audio transducer (i.e., speaker) for delivering acoustic test stimuli to a test subject within the direct sound field range of the device. The device accurately delivers multi-level and multi-frequency test stimuli for the subjective response by the test subject holding the device. An ultrasonic position sensor within the device determines the position of the device with respect to the head or a portion of interest of the head of the test subject while the device is being held. The acoustic test stimuli are controlled and regulated based on the position of the device with respect to the test subject so that accurate levels of test stimuli are presented only when the device is within a proper range and irrespective of its exact position with respect to the test subject's head.

Abstract: The invention relates to fitting apparatus for hearing aids, wherein a first interface transmitting a signal to a hearing aid (7) and a second interface receiving individual response signals to auditory stimulus (9) are merged into a single interface (13).

Abstract: For testing a hearing device a hearing device set is proposed comprising at least one hearing device with at least one acoustical/electrical input converter, at least one electrical/acoustical output converter, at least one communication link tap at the outer surface of said device for wire-bound, optical, wireless or electromagnetic communication to the external, a packaging box for the device specifically conceived for holding the device therein, within said box an acoustical coupler with an acoustical input applicable to said acoustical output of said device and with an acoustical output applicable to the acoustical input of said device.

Abstract: A hearing test device is capable of presenting a variety of acoustical or vibratory stimuli and can be easily calibrated. Transfer functions for the device are calculated at two different attenuation levels to derive the characteristic impedance and sensitivity of the acoustic or vibratory transducer. The predicted sound pressure level emitted by the transducer may then be calculated as a function of input signal and attenuation.

Abstract: In a method for adapting a hearing aid, and a hearing aid arrangement for improving the directivity of a hearing aid with a number of microphones that are connected to one another for generating a directional characteristic, the hearing aid is exposed to acoustic waves in a room for precision measuring while the user is wearing it, and the directional characteristic is registered. The filter parameters that arise therefrom are supplied to parameterizable filters in the hearing aid that are connected downstream from the microphones, and the desired ideal directional characteristic can be approximated taking the individual conditions into account when the hearing aid is worn.

Abstract: An improved hearing-related analysis programming system with a host computer for providing at least one hearing aid program and having at least one personal computer memory card international association (PCMCIA) defined port in combination with a PCMCIA Card inserted in the port and arranged for interacting with the host computer for controlling hearing-related analysis or programming of a hearing aid. The host computer provides power and ground to the PCMCIA Card and provides for downloading the hearing aid programming software to the PCMCIA Card upon initialization. A microprocessor on the PCMCIA Card executes hearing-related analysis or the programming software. A hearing aid interface for adjusting voltage levels and impedance levels is adapted for coupling signals to the hearing aid being programmed.

Abstract: A test site Internet-based client CPU has hearing testing equipment operably connected therewith to produce tones in a first test to which a test person responds in a manner utilized by the test site Internet-based client CPU and which produces a first test data signal corresponding to the response. Software is preferably operably provided in the system for manipulating the first test data signal to produce a first output data indicative of one characteristic of said test person's hearing level. Further, a remote Internet-based server CPU is provided which preferably includes software for gathering the first output data and personal information data of the person and presenting the data in a predetermined audiological test report data form for review by a person certified in audiometric testing.

Abstract: A noninvasive method and system are provided for assessing the performance of implanted actuators of semi or fully-implantable hearing aid systems. The invention utilizes an externally positioned test measurement device to obtain measurements of the electrical impedance of an implanted actuator when driven by a test signal of predetermined characteristics. In one embodiment, the test measurement device may comprise a signal generator for generating the test signal for the actuator, a signal processing unit to compute the electrical impedance from voltage and current measurements, and a user interface to provide an output that is usable to asses the performance of the actuator. The electrical impedance is computable from the voltage and current of the signal passing through the actuator. The electrical impedance is directly related to the mechanical impedance present at the interface between the actuator and middle ear of a patient.

Abstract: A hearing aid with a test controller for detection of a defect in the signal path of the hearing aid is provided. The test controller controls a test signal generator and a probe means for determination of a signal parameter, such as signal level, frequency spectrum, phase characteristic, auto-correlation, cross-correlation, etc. A set of signal switches 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. Further signal switches are provided for coupling hearing aid components into and out of the signal path of the hearing aid.

Abstract: A method for generating digital filters for tuning a hearing aid to enhance hearing ability. Data is provided, for a range for a target response curve representative of enhanced hearing ability of sound level versus frequency. Second digital data is also generated, for an initial response curve or audiogram of an individual's hearing ability. The first digital data is compared with the second digital data and it is determined whether the initial response curve is within the tolerance range. If not, digital audio filters are iteratively generated, and the digital audio filters are applied to digital data representing received sound signals to generate third digital data to enhance hearing. Parameters of the digital audio filters are automatically optimized until the compensated response curve is within the tolerance range or a predetermined number of digital audio filters has been reached.

Abstract: The sound quality of a hearing aid device with a directional microphone system is to be improved. For this purpose, the microphone signals of microphone units with directivities of different orders are analyzed and divided into frequency bands. A weighting of the microphone signals that are emitted from the microphone units with directivities of different orders takes place in the individual frequency bands. The weighting takes place in particular in dependence on the signal level of the microphone signals.

Abstract: A hearing aid that compensates for a patient's hearing deficit in a gradually progressing fashion. The hearing aid may be programmed to successively select in a defined sequence a parameter set that defines at least one operating characteristic of the signal processing circuit from a group of such parameter sets. The defined sequence may end in a parameter set that optimally compensates the patient's hearing.

Abstract: System for enhancing the hearing of certain sounds, the system including an electro-acoustic transducer for producing sounds in the Vicinity of an ear, according to signals provided thereto, and a compensatory signal generator coupled with the electro-acoustic transducer, the compensatory signal generator producing a compensatory signal, according to at least a portion of a compensatory waveform, the compensatory waveform being determined according to ear otoacoustic emissions, the compensatory signal being employed to enhance the hearing, the compensatory signal generator providing the compensatory signal to the electro-acoustic transducer.

Abstract: An adjustment of hearing device systems is achieved by an interactive adaptation that is undertaken during the operation. A classifier recognizes various auditory situations and starts interactive adaptation procedures, in the framework of which various settings are to be evaluated. Only settings that fit the auditory situation are thereby offered. As a result of the evaluations, an optimal hearing aid settings results for the respective auditory situation.

Abstract: If a hearing device user has become accustomed to the tone of a hearing device, it is difficult for him to change over to a new hearing device, since this normally possesses a different tone. Therefore, given a treatment with a second or subsequent device, the settings of the old hearing device can be acquired with a computer-controlled event and be considered in a first adjustment given the adaptation of the new hearing device. The new setting then results from the audiometric measurements, the data of the previous device, and if necessary further data. The tone of the new device is thus approximated to the old device.

Abstract: The individual adaptation of a hearing device to a hearing device user is simplified by providing that the hearing device user manually selects the amplification in a specific auditory situation and initiates an adjustment event, such that this auditory situation is physically measured. From this, a new characteristic line field is determined, such that a corresponding amplification can be adjusted in a new auditory situation. Via this possibility of the self-adjustment, it is no longer necessary that the hearing device user seeks out an acoustician for adjustment.

Abstract: In accordance with the teachings described herein, systems and methods are provided for a hearing instrument with self-diagnostics. A detection circuitry may be used to monitor the functional status of at least one transducer by measuring an energy level output of the transducer and comparing the energy level output to a pre-determined threshold level. The detection circuitry may generate an error message output if the measured energy level output of the transducer falls below the pre-determined threshold level. A memory device may be used to store the error message output generated by the detection circuitry.

Abstract: A body-worn device, such as a hearing aid, is adapted to the shape of an individual's body area, such as an ear. A digitized, three-dimensional representation of the area is prepared. At least one characteristic feature of the representation, such as a dimension of a part of the ear, is automatically determined. A shell is produced based on the characteristic feature.

Abstract: A hearing instrument system detects the insertion or removal of a hearing instrument into a space and includes first and second acoustic transducers, first and second level detection circuitry, and signal processing circuitry. The first acoustic transducer is configured to receive a first electrical signal and in response radiate acoustic energy, and the second acoustic transducer is configured to receive radiated acoustic energy and in response generate a second electrical signal. The first level detection circuitry is operable to receive the first electrical signal and generate a first intensity signal, and the second level detection circuitry is operable to receive the second electrical signal and generate a second intensity signal. The signal processing circuitry is operable to receive the first and second intensity signals and compare the first and second intensity signals and determine whether the hearing instrument is inserted into the space or removed from the space based on the comparison.

Abstract: A method and apparatus for performing various auditory tests utilizing a hand-held, portable, wireless testing device is provided. Within the device is a diagnostic subsystem used to implement and analyze selected tests. Attached to the device, either directly or via a flexible cable, are one or more probes. A processor, storage means, input means and display means are included, thus allowing the device to process and store instructions as well as process, store and display data. A wireless networking subsystem is included, enabling the device to communicate with other, similarly enabled, systems and devices within the device's communication range. Due to the inclusion of the wireless networking subsystem, the device can be configured to allow the user to transmit and/or print data, connect to a network, obtain device configuration updates, and send and receive patient and office updates.

Abstract: A digital hearing aid according to the present invention is capable of measuring its own performance. The hearing aid includes a test signal generator for feeding a test signal into the hearing aid amplifier. The response to the test signal is acquired at a specific point in the hearing aid, depending upon what aspect of performance is to be measured. Various elements of the hearing aid and/or the hearing aid feedback may be bypassed. The hearing aid further includes the capability of initializing hearing aid parameters based upon the performance measurements. The measurement and initialization capability may be entirely integral to the hearing aid, or an external processor may be used to download the measurement program and the run time program, and assist in computing the parameters.

Abstract: Partially and fully implantable hearing system for rehabilitation of a pure sensorineural hearing loss or combined conduction and inner ear impairment, with a microphone (10) which delivers an audio signal, an electronic signal processing and amplification unit (40, 50, 80, 140, 141) which is located in an audio signal processing electronic hearing system path, an implantable electromechanical output transducer (20) and a unit (60) for power supply of the implant, an electronic module (90, 140, 141) being added to the hearing system and generating the audiometry signals for an audiologic study and evaluation of the coupling quality of the electromechanical output transducer (20) and feeding it into the audio signal processing path of the hearing implant.

Abstract: The invention relates to a method for controlling a hearing aid (1a, 1b) using a control unit (7), which is linked to the hearing aid (1a, 1b). The latter receives acoustic signals via a microphone (2a, 2b), amplifies said signals and outputs them by means of a loudspeaker (3a, 3b). In said hearing aid (1a, 1b) digital signals are processed according to a predetermined algorithm and data concerning the acoustic environment is created and forwarded to a control unit (7) via a communication interface (6a, 6b). To improve the quality and ease of operation, the data in the control unit (7) is analysed and an optimal algorithm is calculated, which is transmitted to the hearing aid (1a, 1b) via the communication interface (9).

Abstract: A system and method for modeling binaural shells for hearing aids, wherein the system is configured to load data associated with a first and a second ear shell. The system is further configured to register the data associated with the first and the second ear shells and process the first ear shell. The system is also configured to store data associated with processing the first ear shell and then map the data associated with processing the first ear shell to the second ear shell. Subsequently, the mapped second ear shell is interactively adjusted by an operator to compensate for an inconsistency in the mapped second ear shell.

Abstract: A low price, easy practicable testing method is provided for a hearing device which comprises an input acoustical/electrical converter, an output electrical/acoustical converter and an interlinking computing unit which method comprises stimulating by means of the output converter of the device the input converter in a surrounding whereat both acoustical input and acoustical output of the converter are freely accessible and acoustical signals may freely transit from such output to such input in non test specific surrounding.

Abstract: For a hearing-impaired person provided with a hearing aid device with which sound acquisition ensues outside of the auditory canals of the person, the localization capability with regard to a signal source is lost. To compensate the information loss that occurs due to the acquisition of an acoustic signal outside of the auditory canals, in the signal processing in the hearing aid device of an acoustic input signal acquired by at least one microphone of the hearing aid device, the transfer function of the head or of the external ear is taken into account between the position at which the microphone is located and a position in the auditory canal of the hearing device user. The natural location capability of a person to localize a signal source in space thus is not lost given treatment with a hearing aid device that is not worn in the auditory canal.

Abstract: An auditory sense training device 1 to be used in an auditory sense training method for training auditory sense by listening to a sound formed by processing an original sound comprises a band attenuation processing method 20 for attenuating a predetermined frequency band of an original sound 10, a switching means 30 for selectively outputting either the original sound or the output from said band attenuation processing means, a panpot processing means 40 for performing a panpot process wherein a voice signal formed by attenuating an original sound of one channel is superposed to the original sound of another channel, and a phase reverse processing means 50 for performing a phase reverse process of reversing the phase of the original sound, wherein a trainee listens to the original sound and a band attenuation processed sound formed by attenuating a predetermined frequency band of the original sound alternately.

Abstract: In the adaptation of hearing devices to specific auditory situations, mistakes can be reduced between detected auditory situations, and individual classifications should be enabled. For this, evaluation data are provided for various predetermined auditory situations, and the hearing device adapted to a hearing device user using individual weighting. The individual weighting thereby ensues via a continuous weighting function that runs via supporting points which respectively represent an individual weighting of the evaluation data of one of the predetermined auditory situations. With this, a continuous and individual adaptation of the hearing device to various auditory situations is possible.

Abstract: A graphical interface is provided to select parameters for fitting a hearing device. The graphical interface provides means visually representing and controlling values of these parameters using a common reference axis for multiple parameters related by a programmable constraint. The common reference multiple parameter structures convey information to a user about the interactions between parameters and the limits of the parameters. Further, parameters related by a constraint relation are displayed on graphical structures having a common path, such that movement of a slider representing a parameter can be limited within the bounds of the programmed constraints. Such limited movement is visually conveyed to the user allowing the user to make appropriate adjustment to remain within the limits of the constraint while programming a hearing device for improving performance.

Abstract: A system for conducting multiple diagnostic hearing tests is disclosed. The system comprises a yoke wearable around the neck of a patient, for providing a housing for conduits and wiring to conduct the hearing tests. The yoke may also coupled to one or more ear probes for engaging the ear of the patient, and to at least one microphone for measuring ambient noise during at least a portion of a hearing test.

Abstract: An ear probe for insertion into a first ear of a patient for conducting multiple diagnostic hearing tests is provided. The probe comprises at least one lumen for transmitting test sounds to the ear of the patient, and at least one lumen for transmitting a hearing test result from the ear of the patient. The hearing test result may be a sound or an electronic signal representing the sound. The lumens are preferably coupled to transducers for providing the test sounds to the patient and transmitting the test result sounds through the ear probe. Multiple test sound lumens and test result lumens may be provided for different hearing tests, and an air delivery lumen is preferably provided for delivering air to and removing air from the ear during tympanometric testing.

Abstract: The present invention relates to a method of logging or recording input signal data of a hearing prosthesis in combination with values of one or several variables associated with the hearing prosthesis. The hearing prosthesis variable(s) may comprise logic states of a single or several user-controllable actuator(s) mounted on the prosthesis and/or values of algorithm parameters of a predetermined digital signal processing algorithm executed in the prosthesis. Hereby, error tracking and performance optimisation are facilitated since anomalous or sub-optimal operating conditions of signal processing algorithms and/or user interface control handling or other undesired events may be detected. By recording both the hearing prosthesis variable or variables and the input signal data, it is e.g. possible to identify and track correlations between one or several predetermined signal events in the input signal data and effects to the operation of the hearing prosthesis derived there from.