Patent application number | Description | Published |
20110116666 | HEARING AID WITH BEAMFORMING CAPABILITY - 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. | 05-19-2011 |
20130308782 | HEARING AID WITH BEAMFORMING CAPABILITY - 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. | 11-21-2013 |
Patent application number | Description | Published |
20090304187 | AUTOMATIC SWITCHING BETWEEN OMNIDIRECTIONAL AND DIRECTIONAL MICROPHONE MODES IN A HEARING AID - The present invention pertains to a method of automatic switching between omnidirectional (OMNI) and directional (DIR) microphone modes in a binaural hearing aid comprising a first microphone system for the provision of a first input signal, a second microphone system for the provision of a second input signal, where the first microphone system is adapted to be placed in or at a first ear of a user, the second microphone system is adapted to be placed in or at a second ear of said user, the method comprising a measurement step, where the spectral and temporal modulations of the first and second input signal are monitored, an C evaluation step, where the spectral and temporal modulations of the first and second input signal are evaluated by the calculation of an evaluation index of speech intelligibility for each of said signals, and an operational step, where the microphone mode of the first and the second microphone systems of the binaural hearing aid are selected in dependence of the calculated evaluation indexes. | 12-10-2009 |
20130170653 | HEARING AID WITH SIGNAL ENHANCEMENT - A method of binaural signal enhancement in a binaural hearing aid system, includes providing at least one microphone audio signal in response to sound, providing an estimate of one of a target signal and a noise signal based on the at least one microphone audio signal, phase shifting the estimate of one of the target signal and the noise signal, providing a phase shifted signal in which the phase shifted estimate of one of the target signal and the noise signal substantially substitutes the respective one of the target signal and the noise signal, transmitting a first signal representing the phase shifted signal towards a first eardrum of a user of the binaural hearing aid system, and transmitting a second signal representing the at least one microphone audio signal towards a second eardrum of the user. A system for performing the method is also described. | 07-04-2013 |
20130208929 | METHODS AND APPARATUSES FOR SETTING A HEARING AID TO AN OMNIDIRECTIONAL MICROPHONE MODE OR A DIRECTIONAL MICROPHONE MODE - The present invention pertains to a method of automatic switching between omnidirectional (OMNI) and directional (DIR) microphone modes in a binaural hearing aid comprising a first microphone system for the provision of a first input signal, a second microphone system for the provision of a second input signal, where the first microphone system is adapted to be placed in or at a first ear of a user, the second microphone system is adapted to be placed in or at a second ear of said user, the method comprising a measurement step, where the spectral and temporal modulations of the first and second input signal are monitored, an evaluation step, where the spectral and temporal modulations of the first and second input signal are evaluated by the calculation of an evaluation index of speech intelligibility for each of said signals, and an operational step, where the microphone mode of the first and the second microphone systems of the binaural hearing aid are selected in dependence of the calculated evaluation indexes. | 08-15-2013 |