Vehicle external warning sound generation system and method
US8362921B2 · kind B2 · utility
4Cited by
4References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 2010 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Jul 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/32
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle external warning sound generation system and method. A transducer generates warning sounds external to the vehicle in response to an input sound signal. A sensor senses sound external to the vehicle and has an output signal that represents both sensed ambient noise and sensed warning sounds. A processing system, responsive to the sensor output signal, generates the sound signal that is provided to the transducer. The processing system includes an adaptive filter which reduces the level of the warning sounds in the sensor output signal, so that mostly ambient noise remains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.