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Method of focusing a hearing instrument beamformer

A technology for hearing aids and formers, used in hearing aids, devices for obtaining desired directional characteristics, frequency/directional characteristics devices, etc., can solve problems such as impossible and difficult to locate sources of interest, etc.

Active Publication Date: 2013-12-25
SIVANTOS PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this can be confusing to the user, as the hearing aid will automatically and possibly unexpectedly jump back and forth between different sources without the user's influence
Furthermore the continuously adapted beamformer changes the binaural "cues" and thus makes it difficult for the user to locate the source of interest or makes localization even impossible

Method used

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  • Method of focusing a hearing instrument beamformer
  • Method of focusing a hearing instrument beamformer
  • Method of focusing a hearing instrument beamformer

Examples

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Embodiment Construction

[0056] figure 1 A user 1 with a left hearing aid 2 and a right hearing aid 3 is shown schematically in plan view. The microphones of the left and right hearing aids 2 , 3 are each combined to form a directional microphone arrangement, so that it is possible to direct the respective beams essentially either forwards or backwards as seen by the user 1 . Furthermore, it is possible to connect the left and right hearing aids 2 , 3 by means of a wireless link (e2e) in order to realize a binaural configuration with a binaural microphone arrangement. As seen from the user 1 , essentially the directions to the right and to the left are thereby achieved as further beam directions of the device. The automatic focusing of the beams can be carried out both individually for each monaural hearing aid (front / rear) and jointly for the binaural devices (right / left).

[0057] figure 2 Left and right hearing aids 2, 3 are schematically shown together with the main signal processing component...

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Abstract

The invention relates to a method of focusing a hearing instrument beamformer, aiming to comfortably and visually realize the automatic adaption of the beam width and / or beam direction. A spatial orientation and / or position of the head of the hearing instrument user are / is first captured. When no head movements are captured, the acoustic signals are picked up with directional dependency. Then the amplification of acoustic signals is boosted that originate from a focus solid angle in front of the head of the hearing instrument user, compared with acoustic signals from other solid angles. This activates or increases directivity. Then the focus solid angle is decreased to gradually focus and to increase directivity, until the level of acoustic signals from the focus solid angle, actually the presence of the desired signals in the focus solid angle (purely theoretically the probability that the desired signal is present in the focus solid angle), reduces on account of reducing the focus solid angle.

Description

technical field [0001] The invention relates to a method for focusing a beamformer of a hearing aid. Background technique [0002] The hearing aid can be designed, for example, as a hearing device that is worn on the outer ear or in the ear canal. Hearing aids are used to provide hearing-impaired persons with acoustic ambient signals which are processed and amplified in order to compensate or treat the corresponding hearing impairment. A hearing device consists in principle of one or more input transducers, signal processing means, amplification means and output transducers. The input transducer is usually an acoustic receiver (such as a microphone) and / or an electromagnetic receiver (such as an induction coil). Output transducers are mostly implemented as electroacoustic transducers (eg microspeakers) or electromechanical transducers (eg bone conduction headphones) or as stimulation electrodes for cochlea stimulation. It is also known as an earpiece or receiver. The out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/32H04R25/00
CPCH04R25/407H04R25/552H04R25/554H04R25/507H04R25/40
Inventor V.布斯
Owner SIVANTOS PTE LTD
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