Apparatus and method for non-occluded active noise shaping
US9412356B1 · kind B1 · utility
2Cited by
3References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2016 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Feb 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Non-occluding active noise suppression apparatus and methods are disclosed. A housing includes an inlet to admit ambient sound and an outlet to output personal sound to the ear of a user. An acoustic path and an electronic path are provided from the inlet to the outlet within the housing. For a predetermined frequency range, a phase difference between the acoustic path and the electronic path is substantially 180 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.