Acoustic device
US9154865B2 · kind B2 · utility
9Cited by
8References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 26, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Nov 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
One embodiment of the invention discloses an acoustic device having a housing and a speaker unit accommodated in the housing. The speaker unit forms a front volume and a back volume together with the housing. The housing includes an extra volume communicating with the back volume and a sound channel communicated with the front volume. The extra volume is isolated from the sound channel. The invention provides an acoustic device with enlarged back volume for improving low frequency sound quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.