Determination of position
US5600727A · kind A · utility
14Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1994 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Jul 7, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S3/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An autocalibration system includes two loudspeakers (2, 4) spaced from three microphones (16, 18, 20). Acoustic transient pulses are emitted by each loudspeaker (2, 4) in turn and from the reception of of these pulses by each of the microphones (16, 18, 20), the time-of-flight for each pulse to each microphone may be derived. From these time-of-flight measurements are also derived the distance and angular displacement of each microphone (16, 18, 20) from a reference point (12) flanked by the loudspeakers (2, 4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.