Sound processing apparatus, sound processing method and hearing aid
US8755546B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2010 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Mar 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/43
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sound processing apparatus, a sound processing method and a hearing aid efficiently emphasize the sound of an utterer regardless of the distance between microphones. The sound processing apparatus outputs a first directivity signal in which the main axis of directivity is formed in the direction of the utterer and outputs a second directivity signal in which the dead zone of directivity is formed in the direction of the utterer. The sound processing apparatus calculates the level of the first directivity signal and the level of the second directivity signal, and determines the distance to the utterer based on the level of the first directivity signal and the level of the second directivity signal. The sound processing apparatus derives a gain to be given to the first directivity signal according to the result of the determination and controls the level of the first directivity signal by using the gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.