System and method of acoustic detection and location of audible alarm devices
US7639147B2 · kind B2 · utility
4Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2005 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Aug 8, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method to detect PASS-type device audio alarm signals and to locate such devices in alarm in a public building, airport, sports stadium or other structure which can include a system to measure speech intelligibility. Time and frequency domain analysis are carried out to establish the pressure of PASS-type device audio output signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.