Process and device for focusing acoustic waves
US6978028B2 · kind B2 · utility
2Cited by
21References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2000 |
| Grant date | Dec 20, 2005 |
| Priority date | — |
| Expiry date | Apr 11, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R27/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
After emission of an acoustic pulse, having a first duration, from a given location, acoustic signals coming from the location are gathered through a multi-scattering medium on an array of transducers and recorded, for a second duration greater by at least one order of magnitude than the first duration. Return signals obtained by temporal inversion and amplification of the signals gathered during the second duration are emitted back from said transducers toward the multiscattering medium in order to focus acoustic energy to the location while providing temporal compression of the focussed acoustic energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.