Method for vectorial noise-reduction in speech, and implementation device
US5500903A · kind A · utility
166Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1993 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Dec 28, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sound pick-up operation is carried out by means of at least four microphones positioned in a plane before the speaker, linear combinations are formed by additions and subtractions of the signals from these microphones and certain of these combinations are used as noise-only sources to process them by an adaptive vector filter to produce an estimation of the noise that is subtracted from the noisy signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.