Dual-diaphragm speaker assemblies with acoustic passageways and mobile terminals including the same
US7567680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | May 11, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2209/026
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A mobile terminal includes a portable terminal housing and a speaker housing positioned in the portable terminal housing. The speaker housing includes a first micro-speaker having a first frequency response and a second micro-speaker having a second frequency response and positioned proximate the first micro-speaker. The terminal housing further includes a first passageway extending from a front face of the first micro-speaker to a first opening in the terminal housing, and a second passageway extending from a back face of the second micro-speaker to a second opening in the terminal housing displaced from the first opening. A grommet adjacent the speaker housing acoustically separates at least a portion of the first passageway from the second passageway. The first passageway may be completely acoustically separated from the second passageway by the grommet and/or a gasket and/or a foam structure. The grommet may define a first outlet extending from a front face of the first micro-speaker to a first location on an external surface of the grommet and a second outlet extending from a back face of the second micro-speaker to a second location on the external surface of the grommet that…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.