Automatic switching between omnidirectional and directional microphone modes in a hearing aid

An automatic switching and microphone technology, applied in hearing aids, devices for obtaining desired pointing characteristics, hearing aid signal processing, etc., can solve problems that cannot be determined by hearing aids, and achieve improved speech intelligibility and good signal-to-noise ratio Effect

Active Publication Date: 2009-05-13
GN HEARING AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the purpose of a directional microphone is to provide a better signal-to-noise ratio for the signal of interest, the decision of what is the signal of interest is ultimately a listener's choice and cannot be determined by the hearing aid

Method used

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  • Automatic switching between omnidirectional and directional microphone modes in a hearing aid
  • Automatic switching between omnidirectional and directional microphone modes in a hearing aid
  • Automatic switching between omnidirectional and directional microphone modes in a hearing aid

Examples

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Embodiment Construction

[0052] The figures are schematic and simplified for the sake of clarity, and they only show details that are crucial to the understanding of the invention, other details are omitted. Throughout, the same reference numerals are used to designate the same or corresponding parts.

[0053] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. However, this invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

[0054] In the following description of the preferred embodiment, a modified Speech Transmission Index (STI) is used as a measure of fidelity for automatic switching between OMNI and DIR microphone modes, while it is understood that a...

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Abstract

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.

Description

technical field [0001] The present invention relates to a method for automatic switching between omnidirectional (OMNI) and directional (DIR) microphone modes in a binaural hearing aid system comprising: a device for providing a first input A first microphone system for providing a second input signal, a second microphone system for providing a second input signal, wherein the first microphone system is adapted to be placed at or within the user's first ear, and the second microphone system is adapted to placed at or within the user's second ear. The invention also relates to a binaural hearing aid adapted for automatic switching between OMNI and DIR microphone modes. The invention also relates to hearing aid components for binaural hearing aids. Background technique [0002] Current hearing aids are capable of both omnidirectional (OMNI) and directional (DIR) processing, and newer OMNI / DIR hearing aids are capable of automatic switching between these two modes of micropho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R25/00
CPCH04R25/40H04R25/552H04R2225/41H04R25/407H04R2225/43
Inventor 安德鲁·伯克·迪特贝尔纳
Owner GN HEARING AS
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