Abstract: A system that records audio and stores the recording is provided. The system includes first and second monitoring assemblies mounted in an earpiece that occludes and forms an acoustic seal of an ear canal. The first monitoring assembly includes an ambient sound microphone (ASM) to monitor an ambient acoustic field and produce an ASM signal. The second monitoring assembly includes an ear canal microphone (ECM) to monitor an acoustic field within the ear canal and produce an ECM signal. The system also includes a data storage device configured to act as a circular buffer for continually storing at least one of the ECM signal or the ASM signal, a further data storage device and a record-activation system. The record-activation system activates the further data storage device to record a content of the data storage device.

Abstract: A device for generating an encoded stereo signal from a multi-channel representation includes a multi-channel decoder generating three of more multi-channels from at least one basic channel and parametric information. The three or more multi-channels are subjected to headphone signal processing to generate an uncoded first stereo channel and an uncoded second stereo channel which are then supplied to a stereo encoder to generate an encoded stereo file on the output side. The encoded stereo file may be supplied to any suitable player in the form of a CD player or a hardware player such that a user of the player does not only get a normal stereo impression but a multi-channel impression.

Abstract: This hearing aid fitting device (1) comprises a client data storage section (10) that stores a plurality of hearing ability data and hearing adjustment result data for each of hearing ability data, a close user determination section (11) to which the client data storage section (10) and a hearing ability input section (12) are connected on the input side, a clustering section (13) that is connected to the output side of the close user determination section (11), a representative characteristic determination section (14) that is connected to the output side of the clustering section (13), an initial adjustment candidate selector (15) that is connected to the input side of the representative characteristic determination section (14), and a fine tuner (16) that is connected to the output side of the representative characteristic determination section (15).

Abstract: To provide a hearing aid system (1000) performing dichotic-listening binaural hearing aid processing which improves the clarity of speech and maintains the spatial perception ability. Each of first and second hearing aid devices (1100, 1200) includes a sound pickup unit (1110, 1210) and an output unit (1120, 1220) outputting a sound indicated by a suppressed acoustic signal. The hearing aid system (1000) includes: a first band suppression unit (1300) generating the suppressed acoustic signal indicating the sound outputted from the output unit (1120), by suppressing a signal in a first suppression-target band out of the acoustic signal outputted from the sound pickup unit (1110); and a second band suppression unit (1400) generating the suppressed acoustic signal indicating the sound outputted from the output unit (1220), by suppressing a signal in a second suppression-target band out of the acoustic signal outputted from the sound pickup unit (1210).

Abstract: An inflatable ear piece is formed for insertion and placement in an external auditory canal. The ear piece has an inflatable balloon that may be selectively inflated and deflated. When the balloon is inflated, it expands and braces against the walls of the auditory canal. The ear piece has a receiver module with a sound generator and a connection to an exterior device. The sound waves generated in the receiver module are guided to the ear drum via a carrier which also holds the balloon. A pump and valve is provided for inflating, or selectively deflating, the balloon. The pump is connected by way of a micro tube that projects centrally inside the sound channel of the balloon carrier and its tip projects into a radial projection or a bridge across the sound channel. The receiver and balloon modules may be connected in any rotational orientation.

Abstract: A method for measuring sound pressure at a tympanic membrane of a wearer's ear including a high frequency range with a hearing assistance device. The hearing assistance device comprises a processor connected to a sensor in the ear canal. The device provides a measure of the sound pressure level at the tympanic membrane of the wearer using a null frequency and a null Q measured at a distant position away from the tympanic membrane. The method does not require a precise knowledge of the ear canal, nor does it require an elaborate calibration step. In various embodiments, the present approach works at low and high frequencies.

Abstract: The invention relates to a hearing aid system comprising first and second spatially separated hearing instruments, the system being adapted for processing input sounds to output sounds according to a user's needs. The invention further relates to a method and use. The object of the present invention is to provide an alternative scheme for reducing the effect of acoustic feedback in a hearing aid system.

Abstract: In a hearing aid (100), a control device (4) comprises a transmission characteristic calculator (18), a correction characteristic calculator (21), and a correction component (17). The transmission characteristic calculator (18) calculates an at-fitting transmission characteristic Gf (?) on the basis of correction-use sound data and first sound data produced by collection at an ear canal microphone (10) of correction-use sound outputted from a receiver (3) during fitting. The transmission characteristic calculator (18) calculates an in-usage transmission characteristic Gu (?) on the basis of correction-use sound data and third sound data produced by collection at the ear canal microphone (10) of correction-use sound outputted from the receiver (3) according to user operation after fitting. The correction characteristic calculator (21) calculates a correction characteristic H (?) on the basis of the at-fitting transmission characteristic Gf (?) and the in-usage transmission characteristic Gu (?).

Abstract: The invention regards a scheme for generating a probe noise signal to be used in an anti feedback system of an audio system. The audio system comprises e.g. a microphone for capturing an audio signal, an audio signal processor for adaptation of the audio signal and a receiver for generation of an audible signal. According to an embodiment of the invention, a noise signal is injected into the audio signal path between the microphone and the receiver and used for estimating acoustical feedback, the noise signal being generated by the following steps: converting a digitized audio signal to the frequency domain, in order to obtain a series of magnitude and phase values, changing the phase values such that the phase of the resulting signal becomes less correlated, preferably substantially un-correlated, to the original signal, converting the magnitude and phase back to a time domain signal using the changed phase values. The invention may e.g. be used in a hearing aid, a headset or a pair of headphones.

Abstract: An apparatus for analyzing a sound signal is based on an ear model for deriving, for a number of inner hair cells, an estimate for a time-varying concentration of transmitter substance inside a cleft between an inner hair cell and an associated auditory nerve from the sound signal so that an estimated inner hair cell cleft contents map over time is obtained. This map is analyzed by means of a pitch analyzer to obtain a pitch line over time, the pitch line indicating a pitch of the sound signal for respective time instants. A rhythm analyzer is operative for analyzing envelopes of estimates for selected inner hair cells, the inner hair cells being selected in accordance with the pitch line, so that segmentation instants are obtained, wherein a segmentation instant indicates an end of the preceding note or a start of a succeeding note. Thus, a human-related and reliable sound signal analysis can be obtained.

Abstract: A hearing aid includes a microphone to convert sounds into electrical signals, a transceiver configured to communicate with a computing device through a wireless communication channel, and a processor coupled to the microphone and the transceiver. The hearing aid further includes a memory accessible to the processor and configured to store a table including plurality of hearing aid profile identifiers (IDs). Each of the plurality of hearing aid profile IDs corresponds to a respective one of a plurality of hearing aid profiles. The memory stores instructions that, when executed by the processor cause the processor to identify a hearing aid profile ID from the table based on a sound sample, retrieve a hearing aid profile from the computing device using the hearing aid profile ID, and apply the hearing aid profile to modulate an audio output signal.

Abstract: A method of providing binaural hearing assistance to a user, comprising: capturing audio signals at an ear unit worn at each side of the users head; defining a target signal with regard to background noise; determining the difference in the target-signal-to-background-noise ratio of the audio signals captured at the each ear unit; exchanging audio signals between each ear unit according to the determined difference in the target-signal-to-background-noise ratio; selecting, as a function of the determined difference in the target-signal-to-background-noise ratio, as input to each of the stimulating means the audio signals captured at the respective ear unit, the audio signals received from the other one of the ear units, and/or mixtures thereof; and stimulating the user's right ear and the user's left ear according to the selected respective audio signals.

Abstract: Methods and systems are provided for determining whether signals to be applied by a bone conduction device would be masked by signals arriving at the good ear of a single sided deaf patient. The bone conduction device then applies stimulation for frequency components of the sound received by the bone conduction device that would not be masked by sound received by the patient's good ear. In applying the stimulation, the bone conduction device may apply a gain to compensate for the head shadow effect. This gain may be determined by inverting at least a portion of a curve for the head shadow effect.

Abstract: With the hearing aid device of the present invention, when the power is turned on, communication starts between the first and second hearing aids, and until this communication is established, it is recognized that the power has not been switched on to the second hearing aid, and the user is notified. Also, if the battery of the second hearing aid should die during use, a dead battery notification is sent to the first hearing aid, and if communication between the first and second hearing aids is blocked, the user is notified on the side of the first hearing aid that is operating.

Abstract: A system may include a personal electronic device having a housing and an ultra-wide band transceiver disposed within the housing. The system may also include a stereophonic system for sending audio information to a right ear and a left ear of a user, the stereophonic system having a second ultra-wideband transceiver. The ultra-wideband transceiver of the personal electronic device and the second ultra-wideband transceiver of the stereophonic system are adapted for providing audio communications therebetween. The stereophonic system may include a switch for switching between the plurality of personal electronic devices. The switch may be implemented in software or hardware.

Abstract: A hearing assistance system, having an audio signal source, a transmission unit for transmitting audio signals from the audio signal source via a wireless right ear audio link to a right ear unit and a receiver unit, and an arrangement for stimulating the user's right ear, and via a wireless left ear audio link, a left ear unit having a receiver unit and an arrangement for stimulating the user's left ear, an arrangement for exchanging audio signals received from the transmission unit between the right and left ear units, a device for detecting the quality of the right and left ear links and an arrangement for selecting, as a function of the detected qualities of the right and left ear links, as input to the stimulating arrangement, the audio signals received by the respective receiver unit from the transmission unit, the audio signals received via the audio signal exchanging arrangement, and/or mixtures thereof.

Abstract: Broadly speaking, the embodiments disclosed herein describe an apparatus, system, and method that allow a user to perceive notifications (audible or otherwise) corresponding to an external event in any manner deemed appropriate.

Abstract: A BTE hearing aid includes a BTE hearing aid housing, at least one BTE sound input transducer, a processor configured to generate a hearing loss compensated output signal, a sound signal transmission member for transmission of a signal from a sound output of the BTE hearing aid housing to an ear canal of a user at a second end of the sound signal transmission member, an earpiece configured to be inserted in the ear canal, an output transducer, and an ITE microphone housing accommodating at least one ITE microphone, wherein the ITE microphone housing is configured to be positioned in an outer ear, wherein the processor is further configured for processing an audio signal from the at least one ITE microphone and an audio signal from the at least one BTE sound input transducer in such a way that the hearing loss compensated output signal substantially preserves spatial cues.

Abstract: The invention regards a method for determining a gain setting of a bone-anchored hearing aid comprising a bone anchor, the proximal and the distal ears having respective first and second monaural bone-conduction hearing thresholds, the first monaural bone-conduction hearing threshold being higher than the second monaural bone-conduction hearing threshold. The method comprises: obtaining respective first and second measured monaural bone-conduction hearing thresholds for the proximal and the distal ear; and determining the gain setting in dependence on the first and the second measured monaural bone-conduction hearing thresholds. The execution of the method does not require obtaining other hearing thresholds than such that are typically determined or measured anyway during the diagnostic phase.

Abstract: In a hearing aid (40), a direct-digital H-bridge output driver stage (1) driven by a sigma-delta modulator (2) is configured to operate in a power-saving three-level output mode or a power-consuming two-level output mode. The three-level output mode of the H-bridge output driver stage (1) has low power consumption but suffers the disadvantage of emitting capacitive noise potentially interfering with the reception of radio signals in a radio receiver (17) in the hearing aid (40). By providing a novel method of selecting the two-level output mode whenever the radio receiver (17) is receiving signals, and selecting the three-level output mode whenever the radio receiver (17) is idle, this capacitive interference does not disturb the radio receiver (17) in the hearing aid (40). The invention provides a method and a hearing aid.

Abstract: An apparatus is provided that includes an input system, an output system, and a sensor for sensing magnetic fields. In one example, a signal processing circuit electrically connects the input system to the output system, and a magnetic sensor adapted to inhibit the acoustic input and function as a magnetic input in the presence of a magnetic field. In one example, the magnetic sensor includes a giant magneto resistive (GMR) sensor. In another example, the magnetic sensor includes an anisotropic magneto resistive (AMR) sensor. The magnetic field can be generated by, among other things, a magnet in a telephone handset. The hearing aid further is programmed based on time-varying characteristics of the magnetic field. Wireless activation or deactivation of the hearing aid is also described. Other examples and options are provided herein.

Abstract: The present subject matter relates to the wireless stereo reception of first and second audio information by wireless hearing communication devices. One type of device which may employ the present subject matter is a hearing assistance device, such as a hearing aid. Various forms and protocols of signal transmission are employed in varying embodiments. The present subject matter includes various communication modes such as eavesdropping modes and relaying modes.

Abstract: A hearing aid includes a first microphone for providing a first audio input signal, a second microphone for providing a second audio input signal, a signal processor configured for generating a hearing loss compensated audio output signal based at least in part on the audio input signals, and a receiver for converting the audio output signal into an output sound signal, wherein the signal processor is configured to perform directional processing, based on the first and second audio input signals, in a first frequency range and substantially omni-directional processing in a second frequency range, at least a part of the first frequency range being higher than the second frequency range, and wherein a lower cutoff frequency of the first frequency range is adjustable.

Abstract: A hearing aid includes a casing configured to fit behind an ear of a user's head and against a side of the user's head. The hearing aid further includes a first proximity sensor associated with the casing and configured to generate a first signal that is proportional to a proximity of the casing to the ear and includes a processor coupled to the first proximity sensor and configured to select an operating mode from a plurality of operating modes in response to the first signal.

Abstract: A method and auditory device for automatic evaluation of an input signal for use in an auditory device, the method including the steps of: detecting a signal; processing the signal to determine one or more shape parameters relevant to the change of spectral shape over time of said signal, and the signal level; and on the basis of the shape parameter and the signal level, and a predetermined set of rules, evaluating whether said signal is a useful input signal for said device.

Abstract: Processing two input signals in a hearing aid with a first source separation and a second source separation is provided. A comparison of a first correlation with a second correlation and with a change in the first coefficient set as a function of a second coefficient set when the second correlation is smaller than the first correlation, with the second coefficient set being changed as a function of the first coefficient set when the second source separation is reset.

Abstract: A bone conduction device, comprising: a sound input element configured to receive an acoustic sound signal; an electronics module configured generate an electrical signal representing said acoustic sound signal; and a transducer, comprising a mass configured to move in a rotational direction, configured to generate a vibrational force in a tangential direction with respect to a recipient's bone.

Abstract: A system of signal processing an input signal in a hearing aid to avoid entrainment, the hearing aid including a receiver and a microphone, the method comprising using a transform domain adaptive filter including two or more eigenvalues to measure an acoustic feedback path from the receiver to the microphone, analyzing a measure of eigenvalue spread against a predetermined threshold for indication of entrainment of the transform domain adaptive feedback cancellation filter, and upon indication of entrainment of the transform domain adaptive feedback cancellation filter, modulating the adaptation of the transform domain adaptive feedback cancellation filter.

Abstract: Disclosed is a method and system for allowing a recipient of a hearing aid device, and in one aspect, a bilateral hearing aid system, to locate the source of a sound signal about the recipient. The method uses localization cues in the sound signal and modifies these to provide useable localization cues to generate a stimulating signal for application to the recipient. In one example, a detected localization cue such as an interaural level difference (ILD) is transposed to a lower frequency.

Abstract: The invention relates to a hearing aid system comprising an input transducer, a forward path, an output transducer and an electrical feedback path, the forward path comprising a signal processing unit for modifying an electrical input signal to a specific hearing profile over a predefined frequency range, wherein the predefined frequency range comprises a number of frequency bands, for which maximum forward gain values IGmax for each band can be stored in a memory, the electrical feedback path comprising an adaptive filter for estimating acoustical feedback from the output to the input transducer. The invention further relates to a method of adapting a hearing aid system to varying acoustical input signals. The object of the present invention is to provide an alternative acoustic feedback compensation scheme.

Abstract: Systems, structures, and methods are provided to fit, program, or upgrade a hearing aid system to a patient. One embodiment includes the use of a mobile device to interact with the hearing aid system through a short-range network. The mobile device is also adapted to communicate with a server through a long-range wireless network. The server may reside on the Internet.

Abstract: Apparatus and methods to detect signals connected to a direct audio input port of a hearing assistance device are provided. According to one embodiment, a hearing assistance device includes a processor and a direct audio input (DAI) port including a signal line connected to the processor. The DAI port is configured to connect to an external device, and the processor is programmed to detect audio signals of interest on the signal line and to process the audio signals of interest when detected as programmed.

Abstract: A hearing aid comprising a first sensor for sensing a first parameter indicative of a use situation of the hearing aid, wherein the hearing aid is adapted to change into a high power mode or a low power mode in response to the a first control signal from the first sensor. A second sensor for sensing a second parameter indicative of a use situation of the hearing aid may also be used as well.

Abstract: A hearing instrument has a basic frame with a cavity. A microphone is inserted in the cavity such that a back volume is defined. A coating of electrically conducting material is applied to the surface of the cavity to provide an electromagnetic shielding for the microphone. The electromagnetically shielded microphone is thus not disposed in a separate microphone housing, but rather directly integrated into the hearing instrument.

Abstract: A signal processing apparatus and signal processing method capable of correctly detecting that a conversation is established even in a daily environment are provided. In signal processing apparatus (100), excitation separation section (130) separates a mixed sound signal in which a plurality of excitations are mixed into the respective excitations. Speech detection section (140) performs speech detection on the plurality of separated excitation signals, judges whether or not the plurality of excitation signals are speech and generates speech section information indicating speech/non-speech information for each excitation signal. Identification parameter extraction section (150) extracts an identification parameter indicating a feature value of a daily conversation based on a plurality of excitation signals or speech section information. Conversation establishment degree calculation section (160) calculates and outputs a degree of establishment of a conversation based on the extracted identification parameter.

Abstract: A hearing aid comprises a wireless Frequency-Shift-Keying (FSK) receiver. The receiver has an antenna receiving an FSK signal, a first amplifier stage amplifying the FSK signal, a limiter stage limiting the amplified FSK signal, a plurality of parallel phase detection stages and a lookup table block. Each phase detection stage comprises a local oscillator, a mixer stage, a filter stage, and a comparator stage. The output of each of the respective comparator stages is provided to the input of the look-up table block. The invention also relates to a method for processing a wireless FSK signal for providing a signal for a hearing aid, and a wireless FSK receiver.

Abstract: A hearing aid (100) configured to control the generation of relaxing sound comprises an acoustical-electrical transducer (101), means (105) for deriving a characteristic value from the electrical audio signal, comparator means (106) configured to compare the derived characteristic value with a selected threshold value; relaxing sound generating means (108), first signal processing means (109) adapted for increasing or decreasing the level of the electrical relaxing sound signal as a function of the control value and a selected threshold value, means (102) for adding the processed electrical relaxing sound signal to the electrical audio signal, second signal processing means (103) configured to amplify the electrical input signal and an electrical-acoustical output transducer (104). The invention further provides a method of controlling the generation of relaxing sound in a hearing aid (100).

Abstract: Method and apparatus for environment detection and adaptation in hearing assistance devices. Performance of feature extraction and environment detection to perform adaptation to hearing assistance device operation for a number of hearing assistance environments. The system detecting various noise sources independent of speech. The system determining adaptive actions to take place based on predicted sound class. The system providing individually customizable response to inputs from different sound classes. In various embodiments, the system employing a Bayesian classifier to perform sound classifications using a priori probability data and training data for predetermined sound classes. Additional method and apparatus can be found in the specification and as provided by the attached claims and their equivalents.

Abstract: A hearing assistance device, comprising a microphone to receive sound, signal processing electronics electrically connected to the microphone, a receiver electrically connected to the signal processing electronics and a switch electrically connected to the signal processing electronics, wherein the switch includes conductive silicone adapted to change the switch from a first state to a second state when activated.

Abstract: A body-worn audio gateway device transmitting audio signals comprised in close-range electromagnetic signals may be used outside a car, where it may provide for hands-free mobile telephony and listening to music streamed directly to hearing devices worn by a user. When the user enters the car, he or she may want to use a corresponding in-car audio gateway device for the same purposes. This typically requires manual interaction e.g. to trigger the switch-over and to maintain hands-free operation of a carried mobile phone. Furthermore, the audio gateway devices may disturb each other, which may lead to malfunction, more troublesome interaction and/or reduced audio quality. To overcome this, the invention foresees means for detecting when the user enters and/or leaves the car and for automatically disabling functions of the first audio gateway device when the user is in the car.

Abstract: A hearing aid includes an ambient microphone configured to receive and convert environmental sound into an electronic input signal, a hearing loss processor configured to process the electronic input signal in accordance with a hearing loss of a user, and generate an electronic output signal, a receiver, an ear canal microphone configured for converting ear canal sound pressure into an ear canal signal, an occlusion suppressor for reception and processing of the ear canal signal and for transmitting an occlusion suppression signal, and a signal combiner configured for combining the occlusion suppression signal and the electronic output signal to form a combined signal, and for transmitting the combined signal to the receiver, wherein the receiver is configured to receive the combined signal, and convert the combined signal into an acoustic output signal, and wherein the receiver has a frequency response with a lower cut-off frequency that is less than 40 Hz.

Abstract: A hearing aid includes: first and second microphones; first and second A/D converters; a microphone sensitivity correction unit; a hearing assistance processing unit; a microphone sensitivity correction value calculation unit; a storage unit; a failure detection unit; a sound output unit; a D/A converter; and a receiver. The outputs of the first and second A/D converters are input to the microphone sensitivity correction value calculation unit. One output the microphone sensitivity correction value calculation unit is connected to the microphone sensitivity correction unit, and another output thereof is connected to the storage unit. An output of the storage unit and a signal output from the another output of the microphone sensitivity correction value calculation unit are input to the failure detection unit. Output signals of the failure detection unit and the hearing assistance processing unit are input to the sound output unit.

Abstract: An integrated circuit includes at least one output cell including a first output cell having a ground pin connected to a ground rail, a first power supply pin connected to a first power rail, a second power supply pin connected to a second power rail, a data pin, at least one voltage select pin, and an output pin wired to the first output pad. The first output cell is configured to operate according to a first mode wherein the output pin has a first voltage amplitude, and according to a second mode wherein the output pin has a second voltage amplitude larger than the first voltage amplitude depending on a control signal applied to the at least one voltage select pin.

Abstract: A system has an implantable unit and an external unit. The external unit is fixable at the patient's head and has an audio signal source, an audio signal processing unit for processing audio signals from the audio signal source, a rechargeable power source, a transmitter for transmitting processed audio signals via a transcutaneous audio link to the implantable unit and a power transmission coil for transmitting power via a transcutaneous power link to the implantable unit. The implantable unit has a stimulator for a patient's middle ear or inner ear component according to the processed audio signals. The external unit is coupleable to the inductive charging device for inducing an AC voltage in the power transmission coil. The external unit has a recharging circuitry for transforming the AC voltage induced in the power transmission coil by the charging device into a charging current for recharging the rechargeable power source.

Abstract: With housing elements of a hearing device which are fastened to a frame for accommodating internal components of the hearing device, the use of a large number of additional parts is problematic because of the risk of losing parts. In accordance with the invention a snap-on fastening means is used to fasten a housing element to the frame of the hearing device, with an opening being provided in the housing element and the frame for accommodating the snap-on fastening means.

Abstract: A modular wireless headset having integrated but detachable elements is operable to service a cellular wireless terminal, streamed media or playback device. This modular wireless headset may include a wireless microphone and a wireless earpiece. The wireless earpiece may physically couple to the wireless microphone and a base unit in order to exchange information and share power resources. A power distribution controller allocates power between the wireless earpiece, wireless microphone, and base unit when physically coupled to operate or charge internal power supplies of the components.

Abstract: A hearing aid includes: a first microphone configured to generate a first input signal from an input sound; a second microphone configured to generate a second input signal from the input sound; a signal processing unit configured to generate an output signal from the first input signal and the second input signal; and a receiver configured to play an output sound from the output signal. The signal processing unit determines time responses of the first input signal and the second input signal based on a contact sound generated when the hearing aid is contacted in a predetermined time period, and distinguishes a plurality of settings of the hearing aid and changes the setting based on the time responses.

Abstract: The invention relates to an assistive listening system comprising an audio transmitting device adapted for transmitting an audio signal and/or a control signal to a multitude of receiving listening devices and at least one receiving listening device adapted for receiving said audio signal and said control signal from said audio transmitting device. The invention further relates to a method of operating an assistive listening system and to its use. The object of the present invention is to provide an assistive listening system suitable for servicing a multitude of body worn listening devices in a wireless environment. The problem is solved in that the system is adapted to establish a digital link according to the DECT-standard from the audio transmitting device to the at least one receiving listening device, wherein the system is adapted to provide that said link is uni-directional.

Abstract: A hearing aid tailored to a hard-of-hearing person is designed using sampled-data control theory. The method is for designing an audio signal processing system for a hearing aid, wherein the system comprises an AD converter for converting an analog audio input signal (yc) inputted to the hearing aid into a digital audio input signal, a hearing aid digital filter (K(z)) for performing a signal processing on the digital audio input signal outputted from the AD converter, and a DA converter for converting a digital signal outputted from the hearing aid digital filter into an analog audio output signal to be outputted to the hard-of-hearing person.

Abstract: A system for production of an electromagnetic (EM) field having EM emissions mitigated at one or more predetermined locations within a Hearing Aid Compliant (HAC) measurement plane is provided. The EM field mitigation system includes a ground plane, an antenna element, and a parasitic resonator element. The antenna element is coupled to the ground plane and resonates within at least one predetermined frequency band for transmitting and receiving the radio frequency (RF) signals modulated at one or more frequencies within the at least one predetermined first frequency band. The parasitic resonator element includes at least a first leg and a second leg connected to the ground plane and located a predetermined distance from the antenna element for mitigation of the EM emissions of the antenna element at the one or more predetermined locations within the HAC measurement plane.