Abstract:
In a earwax trap for use with hearing-aid apparatus and of the kind comprising a) in a first part (6) a space (8) adapted to communicate acoustically an interior part (not shown) of said hearing-aid apparatus (not shown) with the external auditory meatus (not shown) of the user's ear, and b) means (7) to prevent earwax having entered said space (8) from leaving same towards said interior part (3), the novel feature is that said leaving-preventing means comprise at least one piston- or plug-shaped member (7), which is adapted by relative movement between itself and the first part (6) containing said space (8) to enter said space (8) in a first direction away from said interior part of said hearing-aid appartus, and to leave said space (8) in the opposite direction and thus re-establish the acoustic connection between said interior part and said space (8). In this manner, earwax (15) having collected in the space (8) communicating with the user's external auditory meatus (not shown), can be expelled without using external means, such as pipe cleaners or the like, and without risk of damage to the internal parts of the hearing-aid (not shown).
Abstract:
The invention relates to alistening device for processingan input sound to an output sound. The invention further relates to a method and use. The object of the present invention is to minimize or avoid build-up of howl in a listening device. The problem is solved in that the listening device comprises an input transducer (1) for convertingan input sound to an electric input signal(11), an output transducer (2) for converting a processed electric output signal to an output sound, a forward path being defined between the input transducer and the output transducer and comprising a signal processing unit (3) for processing an input signal in a number of frequency bands and an SBS unit (4) for performing spectral band substitution from one frequency band to another and providing an SBS-processed output signal(41), andan LG-estimator unit (5) for estimating loop gain in each frequency band thereby identifying plus- bands having an estimated loop gain according toa plus-criterionand minus-bands having an estimated loop gain according toa minus- criterion,wherein -based on an input (51) from the LG-estimator unit -the SBS unit is adapted for substituting spectral content in a receiver band of the input signal with spectral content froma donor band in such a way that spectral content of the donor band is copied and possibly scaled with a scaling function and inserted in the receiver band instead of its original spectral content, wherein the receiver band is a plus-band and the donor band is a minus-band. This has the advantage of providing an alternative scheme for suppressing howl. The invention may e.g. be used for portable communication devices prone to acoustic feedback problems, e.g. in the ear (ITE) type hearing instruments.
Abstract:
The invention relates to a portable communications device. The invention further relates to its use of and to a method of operating it. The object of the present invention is to facilitate adaptation of a communications device to its present environment, e.g. to facilitate spectrum sharing in short range communication devices. The problem is solved in that the portable communications device comprises a wireless communications interface for communicating with another device, a memory and an RFID-recorder for receiving an RFID-signal transmitted from an RFID-interrogator, wherein the device is adapted for storing individual received RFID-signals in the memory. An advantage of the invention is that it provides a relatively simple scheme for extracting information from a current environment of a portable communications device. The invention may e.g. be used for adapting listening devices, e.g. hearing instruments, headphones, or head sets to local, e.g. country specific, conditions or to operate in an efficient way under given interference conditions.
Abstract:
The present invention refers to a receiver module (21 T) of a hearing device (10). The receiver module is adapted for insertion into a canal element (22) of the hearing device which further comprises a circuit module (11). The canal element is to be arranged in a user's ear canal and defines a closed portion of the user's ear canal between the canal element and the user's eardrum. The receiver module comprises a sensor (50) arranged at a distal end (25) of the receiver module for sensing acoustical conditions (sound signals) in the closed portion of the user's ear canal and generating corresponding detection signals which are subject to a predetermined processing by said circuit module, a connector (12) for communicating said detection signals to said circuit module, and fastening elements (24, 27) for removably fixing said receiver module in said canal element.
Abstract:
This invention relates to a system (100) for adapting a hearing aid to a user and comprising means for generating an image (102, 120) of said user's ear together with a model of said hearing aid, means for generating a mesh (112) based on said image, means for calculating acoustic response (110) to a simulated acoustic signal in said mesh, and means for identifying optimal position of microphone (114) of said hearing aid in-situ from said acoustic response.
Abstract:
The invention relates to a communication device having at least two microphones, where in order to match the microphone performance in respect of the phase response a correction filter in the form of a IIR filter is implemented and where the amplitude of the transfer function for the correction filter is the inverse of the difference between the two microphone amplitudes.
Abstract:
The invention regards a method for noise reduction in an audio device whereby an electrical and/or digital signal which represents sound is routed simultaneously through: - a signal analysis path, and- a signal processing path wherein the signal amplification is individually controllable in specific frequency bands by attenuation values derived from the signal analysis path, whereby the signal in the signal analysis path is routed simultaneously through: - a first detector which identifies the presence of speech indicators in the overall signal, and- a second detector which in a predefined number of frequency bands detects the modulation amplitude, and- where attenuation values in each of the predefined frequency bands are calculated based on the combined results of the first detector and the modulation amplitude in the specific frequency band detected by the second detector, - where the attenuation values in the predefined number of frequency bands are routed to the signal processing path in order to attenuate the signal level in corresponding frequency bands.
Abstract:
An AM demodulator using totem pole complementary metal oxide semiconductor transistors having a feedback to provide a common gate voltage of approximately half that across the transistors in the totem pole. The AM demodulator used in a hearing assistance device and in a programmer of a hearing assistance device.
Abstract:
The invention concerns a communication device with means for delivering an audio signal to the ear of a user. The communication device comprises a casing intended for wear at the ear, and the casing contains; a microphone, a signal processing device, a receiver for delivering an audio signal to the users ear canal, and a receiver enclosure whereby the receiver enclosure has wall parts forming part of the casing which in co operation with detachable wall parts form the enclosure in an air tight manner for sound isolation of the receiver.
Abstract:
The invention comprises a method for processing the signals from two or more microphones in a listening device which has a casing holding the microphones, and which further comprises a signal processing unit which is to provide an output signal in correspondence with the microphone signals and suited to the users hearing whereby a receiver unit for delivering the output signal to the user is provided, whereby the signals from the microphones are analysed in order to detect when the casing of the listening device is being touched, whereby further the signal processing of the signal processing unit changes whenever touching of the casing is detected. The invention also comprises a listening device having two or more microphones wherein means are provided for detecting when the casing material is being touched.