Method for binaural side sensing for hearing aid devices

A technology for hearing aids and useful signals, applied in hearing aids, hearing aid signal processing, microphones, etc., can solve problems such as interference noise reduction

Active Publication Date: 2015-07-29
SIVANTOS PTE LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention solves the above-mentioned technical problem by considering it as a classical interference noise reduction problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for binaural side sensing for hearing aid devices
  • Method for binaural side sensing for hearing aid devices
  • Method for binaural side sensing for hearing aid devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] figure 1 Signals for a ring are shown, i.e. for a signal source positioned in the spatial direction of the described ring, the left ear side (indicated with reference L2 in the figure) and the right ear side of a binaural hearing aid arrangement at 1 kHz The level of the hearing aid microphone or microphone unit on the side (reference L1). A difference of 6-10dB can be discerned, i.e. for the left signal (270°) the level L2 of the microphone or microphone arrangement on the left is higher than the level L16-10dB of the microphone or microphone arrangement on the right; at higher frequencies In the case of , the level difference will be increased.

[0027] For example, if it is now desired to listen to the left (270°), the signal L1 on the right is used as an interference signal and the signal L2 on the left is used as a useful signal. On the basis of this interfering sound and the useful sound signal, input parameters for filtering, for example a Wiener filtering, can...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A method and system for improving signal-to-noise ratio of output signals of a microphone system having two or more microphones due to acoustic useful signals at sides of the system are used in hearing instruments, especially hearing aids worn on the head. High and low frequency portions (cut-off frequency between 700 Hz and 1.5 kHz, approx. 1 kHz) are processed differently. In low frequency ranges, differential microphone signals directed towards left right are produced to determine lateral useful and noise sound levels using these two directional signals. These levels are used for subjecting every microphone signal to individual Wiener filtering. The natural head shadowing effect is used in high frequency ranges as a pre-filter for noise and useful sound estimation for subsequent Wiener filtering. The methods are used in hearing instruments worn on the head individually for high or low frequencies or in combination and complement each other.

Description

technical field [0001] The invention relates to a method and a system for improving the signal-to-noise ratio in the output signal of a microphone arrangement of two or more microphones on the basis of acoustically useful signals occurring laterally of the microphone arrangement. Such methods and systems may be employed in hearing aid devices, particularly hearing aids worn on the head of a hearing aid wearer. Sides are to be understood here to mean, in particular, the right and left sides of the head of a wearer of a binaural hearing aid arrangement. Background technique [0002] Conventional directional methods used hitherto in hearing aids offer the possibility of emphasizing signals or noises arriving from the front or from behind of the hearing aid wearer from the rest of the ambient noise in order to improve speech intelligibility in this way. However, this method does not offer the possibility of highlighting signals or noise from lateral sources arriving from the le...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H04R25/00
CPCH04R2430/21H04R25/552H04R2410/01H04R2225/43H04R25/407
Inventor E.费希尔
Owner SIVANTOS PTE LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap