In-ear active noise reduction earphone
US9082388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2012 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Dec 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/002
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An active noise reduction earphone. The earphone includes structure for positioning and retaining the earphone in the ear of a user without a headband, active noise reduction circuitry including an acoustic driver with a nominal diameter greater than 10 mm oriented so that a line parallel to, or coincident with, an axis of the acoustic driver and that intersects a centerline of the nozzle intersects the centerline of the nozzle at angle θ>±30 degrees. A microphone is positioned adjacent an edge of the acoustic driver. The earphone is configured so that a portion of the acoustic driver is within the concha of a user and another portion of the acoustic driver is outside the concha of the user when the earphone is in position. An opening coupling the nozzle to the environment includes impedance providing structure in the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.