Multi-chamber noise control system
US8005235B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2006 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Jun 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3224
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A noise control system is operable within a box-like structure provided by the dual bulkhead plenum of the vehicle dashboard positioned within the transfer path along which the noise is being transmitted from the source of the generated noise to the receiver of the noise in the passenger compartment of an automobile. The plenum is divided into discrete chambers into each of which is provided a counter noise generating apparatus to create a counteracting noise offsetting the noise generated at the source. The acoustic resonance of the chambers amplifies the noise control energy. The geometry of the individual chambers can be varied to optimize the packaging and sound control or shaping strategy. The sound energy permitted to pass through the plenum to the driver's side of the passenger compartment can be tuned to be different than the noise received in the passenger's side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.