Title:
SEPARATION OF TARGET ACOUSTIC SIGNALS IN A MULTI-TRANSDUCER ARRANGEMENT
Document Type and Number:
WIPO Patent Application WO2006012578
Kind Code:
A3
Abstract:
The present invention provides a process (26) for separating a good quality information signal from a noisy acoustic environment (12). The separation process uses a set of a least two spaced-apart transducers (19, 20) to capture noise (13, 15) and information components (14). The transducer signals, which have both a noise and information component, are received into a separation process. The separation process generates one channel that is substantially only noise, and another channel that is a combination of noise and information. An identification process (30) is used to identify which channel has the information component. The noise signal is then used to set process characteristics that are applied to the combination signal to efficiently reduce or eliminate the noise component. In this way, the noise is effectively removed from the combination signal to generate a good qualify information signal. The information signal may be, for example, a speech signal, a seismic signal, a sonar signal, or other acoustic signal.
Inventors:
VISSER ERIK (US)
LEE TE-WON (US)
LEE TE-WON (US)
Application Number:
PCT/US2005/026196
Publication Date:
August 17, 2006
Filing Date:
July 22, 2005
Export Citation:
Assignee:
SOFTMAX INC (US)
VISSER ERIK (US)
LEE TE-WON (US)
VISSER ERIK (US)
LEE TE-WON (US)
International Classes:
G10L21/02
Foreign References:
| US4649505A | 1987-03-10 | |||
| US4912767A | 1990-03-27 | |||
| US5208786A | 1993-05-04 | |||
| US5706402A | 1998-01-06 | |||
| US5732143A | 1998-03-24 | |||
| US6002776A | 1999-12-14 | |||
| US6108415A | 2000-08-22 | |||
| US6381570B2 | 2002-04-30 | |||
| US6424960B1 | 2002-07-23 | |||
| US20010037195A1 | 2001-11-01 | |||
| US20020193130A1 | 2002-12-19 | |||
| US20030055735A1 | 2003-03-20 |
Other References:
See also references of EP 1784820A4
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