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7580536 |
Sound enhancement for hearing-impaired listeners
A method of enhancing sound heard by a hearing-impaired listener comprises monitoring the sound in an environment in which the listener is located; and manipulating the frequency of high frequency...
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7522961 |
Inner hair cell stimulation model for the use by an intra-cochlear implant
The stimulation provided in the electrically stimulated cochlea is modulated in accordance with the amplitude of a received acoustic signal and the onset of a sound in a received acoustic signal to...
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7519193 |
Hearing aid circuit reducing feedback
A hearing aid circuit includes a correlation detector that detects correlation at a feedforward path input and that provides a correlation output to a phase shifter. The phase shifter introduces a...
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7492916 |
Method for manufacturing acoustical devices and for reducing especially wind disturbances
A method for manufacturing an acoustical device, especially a hearing device. A device casing is provided with an acoustical/electrical input converter arrangement with an electric output. An audio...
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7366315 |
Adaptive dynamic range optimization sound processor
In one embodiment, an apparatus for processing sound includes a means ( 401 ) for analysing a sound signal into a number of frequency bands and a means ( 403 ) for applying variable gain to each...
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7343022 |
Spectral enhancement using digital frequency warping
A frequency-warped processing system using either sample-by-sample or block processing is provided. Such a system can be used, for example, in a hearing aid to increase the dynamic-range contrast...
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7340072 |
Signal processing in a hearing aid
In a method and a device for the signal processing in a hearing aid, in which coefficients of a filter for the frequency-dependent amplitude adaptation of an input signal are adapted in accordance...
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7286675 |
Audio signal processors
An audio signal processor includes a tone control ( 23 ). The tone control comprises two low-pass filters ( 221, 222 ) operating in current-mode and a subtractor ( 223 ) which subtracts the output...
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7277554 |
Dynamic range compression using digital frequency warping
A dynamic range compression system is provided, using either a sample-by-sample or a block processing system. Such a system can be used, for example, in a hearing aid. The system, using a...
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7248711 |
Method for frequency transposition and use of the method in a hearing device and a communication device
A method for frequency transposition in a communication device Or a hearing device, respectively, is disclosed by transforming an acoustical signal into an electrical signal (s) and by transforming...
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7149583 |
Method of using non-simultaneous stimulation to represent the within-channel fine structure
The present invention provides a cochlear stimulation system and method for capturing and translating FTS in incoming sounds and delivering this information spatially to the cochlea. An embodiment...
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7127076 |
Method for manufacturing acoustical devices and for reducing especially wind disturbances
A method for manufacturing an acoustical device, especially a hearing device. A device casing is provided with an acoustical/electrical input converter arrangement with an electric output. An audio...
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7076315 |
Efficient computation of log-frequency-scale digital filter cascade
A system for processing audio signals comprises a sequence of digital filters each configured to process a selected frequency using a set of coefficients. A filter configured to process a certain...
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7058133 |
Process for digital communication and system communicating digitally
According to the present invention, a three-line bus is used for communication between a first digital unit ( 1 ) and two other digital units ( 3 ). The three-line bus includes a system clock line...
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7043041 |
Integrated telecoil amplifier with signal processing
The invention concerns a method of receiving and processing both audio and non-audio signals for use in a hearing aid or other listening device comprising converting electromagnetic radiation to...
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7031484 |
Suppression of perceived occlusion
A fitting method is provided for a multichannel hearing aid with at least one low frequency channel having an individually adjustable compressor. The method comprises the steps of first adjusting...
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7003126 |
Dynamic range analog to digital converter suitable for hearing aid applications
An improved analog-to-digital converter device suitable for use in digital hearing aids, and methods for operating such a device are disclosed. Aspects of the present invention may provide a full...
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6791433 |
Signal processing by means of resonators
Scheme for processing an input signal A(t) by N resonators ( 17 ), each having parameters characterizing it, to generate N individual output signals. Then each of the N individual output signals is...
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6731769 |
Upper audio range hearing apparatus and method
A system and method upper auditory frequency range hearing. A speech signal is filtered, and then modulated to an upper auditory frequency range. The modulated signal is then provided to a...
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6724900 |
Hearing aid
To provide a hearing aid that allows desired sound to be selectively heard and allows unnecessary sound not to be heard, and that can be used with no bars even in a situation like a meeting that...
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6639564 |
Device and method of use for reducing hearing aid RF interference
An apparatus for reducing hearing aid radio frequency (RF) interference including a directional multi-band and/or single band antenna for use with PWDs such as digital cellphones is disclosed. The...
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6631197 |
Wide audio bandwidth transduction method and device
The present invention is directed to a communication system wherein bone conducted ultrasonic signals are used as carriers to efficiently produce high fidelity, wide audio bandwidth sound....
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6631196 |
Method and device for using an ultrasonic carrier to provide wide audio bandwidth transduction
The present invention is directed to a communication system wherein ultrasonic signals can be used as carriers to efficiently produce high fidelity, wide audio bandwidth sound. Exemplary...
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6628794 |
Method and apparatus for level limitation in a digital hearing aid
For level limitation of a time-discrete signal in a digital hearing aid having at least an input transducer, an A/D converter, a signal processing unit and an output transducer, the sampling rate...
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6606391 |
Filterbank structure and method for filtering and separating an information signal into different bands, particularly for audio signals in hearing aids
A filterbank structure is provided which provides a flexible compromise between the conflicting goals of processing delay, filter sharpness, memory usage and band interaction. The filterbank has an...
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6580798 |
Hearing aid
The suppression of interfering noise in an input signal ( 7 ) takes place in a main signal path ( 5 ), which contains neither a transformation in the frequency range nor a splitting-up into partial...
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6577739 |
Apparatus and methods for proportional audio compression and frequency shifting
Apparatus and methods for audio compression and frequency shifting retain the spectral shape of an audio input signal while compressing and shifting its frequency. The fast Fourier transform of the...
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6339647 |
Hearing aid with beam forming properties
A hearing aid with beam forming properties, having at least two microphone channels ( 1 a , 1 b ) for at least two microphones ( 2 a , 2 b ), the microphone channels each comprising an analog to...
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6292571 |
Hearing aid digital filter
A digital hearing aid uses a digital filter using coefficient multipliers and with digital signal processing algorithms, which can be implemented with a minimum amount of dedicated circuitry, which...
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6240195 |
Hearing aid with different assemblies for picking up further processing and adjusting an audio signal to the hearing ability of a hearing impaired person
A hearing aid with different assemblies for picking up, further processing and adjusting an acoustic signal to the hearing ability of a hearing impaired person, wherein a digital signal processing...
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6240192 |
Apparatus for and method of filtering in an digital hearing aid, including an application specific integrated circuit and a programmable digital signal processor
An apparatus for a hearing aid provides an application specific integrated circuit (ASIC) for filtering of input signals and a programmable digital signal processor connected to it, for control of...
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6173062 |
Frequency transpositional hearing aid with digital and single sideband modulation
Apparatus and method for shifting the frequency range of an audio frequency range signal using digital frequency shifting and single sideband amplitude modulation techniques. In one embodiment, a...
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6169813 |
Frequency transpositional hearing aid with single sideband modulation
A hearing aid apparatus and method of the type in which audio frequency signals are frequency upshifted to ultrasonic frequency bands and are applied as vibrations to the human body to generate a...
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5812679 |
Electronic damper circuit for a hearing aid and a method of using the same
A hearing aid is set forth that includes one or more hearing aid components that introduce an undesired undamped peak into the frequency response of the hearing aid. An electronic damping filter is...
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5794187 |
Method and apparatus for improving effective signal to noise ratios in hearing aids and other communication systems used in noisy environments without loss of spectral information
Improved signal to noise ratio to help speech comprehension in a noisy environment is accomplished by selectively downwardly expanding a speech and noise composite signal when the speech signal is...
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5771299 |
Spectral transposition of a digital audio signal
In this spectral transposition system for digital audio signals, the coefficients in an analysis filter are passed directly to the synthesis filter so that the coefficients in both filters match....
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5757932 |
Digital hearing aid system
A detachable digital binaural processing hearing aid comprised of a digital signal processor (DSP), two microphones, two receivers, a bi-directional communications link between each...
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5754661 |
Programmable hearing aid
A programmable hearing aid has improved signal processing, particularly improved separation of the useful signals from unwanted noise, by virtue of signals of the signal path from at least one...
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5727070 |
Hearing-aid system
A hearing-aid device and that permits individuals other than the wearer of the hearing-aid to monitor and adjust one or more of the various characteristics (e.g., amplification, tonal quality,...
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5721783 |
Hearing aid with wireless remote processor
A hearing aid or audio communication system includes an earpiece (10) that can be hidden in the ear canal, and which communicates wirelessly with a remote processor unit, or RPU (16), that enhances...
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5717770 |
Programmable hearing aid with fuzzy logic control of transmission characteristics
A hearing aid with a simplified and optimized control system has control functions that are entirely or partially implemented by a fuzzy logic controller in the amplifier and transmission part...
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5712919 |
Hearing aid apparatus powered by capacitor
A self-contained hearing aid has a housing which contains a microphone, a miniature speaker, an amplifier which amplifies signals from the microphone and supplies them to the speaker, and a...
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5710819 |
Remotely controlled, especially remotely programmable hearing aid system
In a remotely controllable, especially remote-control-programmable heating aid with an external control device (1) with a keyboard (2), display device (3) and a data processing device (4) and also...
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5394475 |
Method for shifting the frequency of signals
Method and device for transposing the frequency of an input signal, in particular for hearing aids, comprising: an analytical circuit (AS) with which are produceable a momentary frequency signal...
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5202927 |
Remote-controllable, programmable, hearing aid system
A remote-controllable, programmable hearing aid system, including of a hearing aid (2) with incorporated amplifier and with a signal processing circuit whose transmission characteristic can be...
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5201006 |
Hearing aid with feedback compensation
In a hearing aid with feedback compensation by virtue of at least one secondary microphone feeding into a delay unit and an attenuator feeding into one input of a difference amplifier, the other...
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5077800 |
Electronic device for processing a sound signal
The present invention concerns an electronic device for processing a sound signal, said device being of the type comprising: means for receiving said sound signal and for transforming it into an...
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5047994 |
Supersonic bone conduction hearing aid and method
A supersonic bone conduction hearing aid that receives conventional audiometric frequencies and converts them to supersonic frequencies for connection to the human sensory system by vibration bone...
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5014319 |
Frequency transposing hearing aid
The described hearing aid includes a frequency analyzer for classifying incoming sounds according to their frequency, and for selecting an appropriate transposition factor (the ratio of the...
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4926159 |
Apparatus and method for the generation of directionally perceptible sound
An apparatus and method to generate high intensity sound having a strong directional characteristic. The apparatus preferably uses a sound element (e.g. piezo sounder) which is capable of...
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