Methods and apparatuses for setting a hearing aid to an omnidirectional microphone mode or a directional microphone mode
US8396224B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2007 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Feb 1, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/43
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.