Abstract:
In a method for locating an arterial constriction and performing an arteriotomy distally thereof, especially with a view to establishing a bypass connection between the aorta (52) and a part of the coronary artery (51) distally of a constriction in the artery, the most important steps are: (a) locating the site of the constriction in the artery (51), preferably by using an instrument (9) with a head (3) carrying an ultrasonic transducer array (not shown), and (b) making an incision in the artery (51) closely distally of the constriction, preferably by using a knife (not shown) placed in said head (3). By proceeding in this manner, it is possible to perform the initial steps of a coronary bypass operation swiftly and accurately on a beating heart.
Abstract:
The invention relates to a bone anchored hearing aid with a sound processor which generates a vibration signal and serves the signal at a vibrator for transmission of the vibration signal into the skull bone of a wearer and where a resonance damping system is provided in the hearing aid and comprising an electronic notch filter having a notch filter center frequency F1, wherein the notch filter frequency F1 is below a resonance frequency F sim of the hearing aid as measured in a standard skull simulator.
Abstract:
The invention regards a hearing aid comprising a receiver and a signal processing device, wherein the signal processing device is electrically coupled to a connection socket operable to detachably connect the receiver to the socket and whereby the signal processing device further comprise a detector operable to detect a characteristics of the receiver which is connected to the signal processing device through the connection socket. The present invention addresses the problem of identification of individual receiver properties as well as of identifying different types of receivers.
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:
The invention relates to a communications device for wireless communication with another device, the communications device comprising a) a first part comprising a first housing and a first induction coil for providing an inductive coupling to the other device, and b) a second part comprising a second induction coil adapted to be inductively coupled to said first induction coil and to said other device when mounted on or near said first housing. The invention further relates to the use of such a device and to a system comprising the device. The object of the present invention is to provide a relatively simple mechanical interface for an inductively coupled link between a communications device and another device. The problem is solved in that the second part is adapted to be detachably attachable to the first housing. An advantage of the invention is that no connector is needed whereby a simpler and more reliable device is provided. The consequences of wear of the connector leading to increased contact resistance and/or failure of the electrical connection is avoided. The invention may e.g. be used for the provision of an audio signal selected among a number of audio signals (e.g. including that of a mobile telephone) to a head-worn listening device, e.g. a hearing aid.
Abstract:
The invention relates to a body worn communications device for communicating with a head-worn listening device, the communications device being adapted for receiving a multitude of audio signals and for transmitting at least one audio signal selected among the multitude of audio signals to the listening device, the communications device comprising a number of functional push-buttons for influencing the selection and properties of said audio signals. The invention further relates to a system, a method, and use. The object of the present invention is to provide a simple user interface between an audio selection device and a head-worn listening device, such as a hearing aid. The problem is solved in that the communications device comprises a user interface comprising a number of functional push-buttons for influencing the state of the user interface, such as the selection (and de-selection) of an audio signal, events and properties related to the audio signal, and wherein the state of the user interface is indicated at the same button where the state can be influenced. Among the advantages for a user are: Clear visual feedback by using simple button light indications; operation and indication are tied together in the buttons; the combination of audio and visual indications. The invention may e.g. be used for the hearing aids, ear phones, head sets, etc.
Abstract:
The invention regards an audio processing device with at least one encapsulated electronic component mounted and electrically connected to electric leads in a mounting substrate. Further electric components are mounted for connection with the encapsulated electronic component through the substrate and the encapsulation material is moulded onto the substrate. According to the invention at least one metal layer is deposited on a surface part of the encapsulation material. The invention further regards a method for producing an amplifier for an audio device whereby at least one encapsulated electronic component is mounted on, and electrically connected to a PCB and where the encapsulation material is provided to protect the electronic component wherein further a metal layer is generated at least on a surface area of the encapsulation material.
Abstract:
The invention relates to equipment for fitting a hearing aid to the specific needs of a hearing impaired individual. The equipment comprising a computer or similar device with soft-ware, where the device has display means for visual display of data, data entry means for entering hearing aid programming data into the device, data storing means, and data output means for outputting programming data to the hearing aid. According to the invention means are provided for selecting simultaneous settings relating to two or more different parameters relating to the processing of sound in the hearing aid to be programmed.
Abstract:
The invention concerns a process for generating a through wafer via from a first to a second external surface of a CMOS or similar circuitry containing wafer, whereby a metal layer is deposited on the second surface of the wafer and where a DRIE process is subsequently used to generate the hole through the wafer material from the first surface to the metal layer and using the metal layer as an etch stop, and whereafter an electrical insulation layer is deposited on the side walls of the hole and an electrically conducting material is provided on top of the electrical insulation material.
Abstract:
The invention concerns a digital filter. The filter comprises at least a first and a second 5 delayed summation line, whereby one of the delay lines comprise a warped filter FIR filter and the other line is a FIR filter, whereby: at least two delayed summation lines are present, midpoint elements from the first delayed summation line are used as input to the second delayed summation line, output from the first delayed summation line is delayed with a delay corresponding to the total delay of the second delayed summation line, the delayed output from the first delayed summation line is added to output from the second delayed summation line to form a new output.