The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2006
Filed:
Dec. 11, 2003
Fernando Gallego Hugas, Tarragona Valls, ES;
Eduardo Lleida Solano, Saragossa, ES;
Enrique Masgrau Gomez, Saragossa, ES;
Alfonso Ortega Gimenez, Saragossa, ES;
Fernando Gallego Hugas, Tarragona Valls, ES;
Eduardo Lleida Solano, Saragossa, ES;
Enrique Masgrau Gomez, Saragossa, ES;
Alfonso Ortega Gimenez, Saragossa, ES;
Lear Corp., Southfield, MI (US);
Abstract
Method and system for canceling echoes and noises in environments with variable acoustic conditions and high feedback, such as the interior of an automotive vehicle, permitting audible communication between the occupants, comprising one/several microphone/s () for a speech signal () and A/D, D/A converters, amplification and filtering means generating an electric signal () reproduced as an acoustic signal () by a speaker (), and an echo canceller () using said signal () and an electric signal () from the microphone integrating the feedback of said signal (), another speech signal () and noise () seized by the microphone (), the system () being applied to eliminating said feedback, the proposed method and system providing an additional filtering of an electric output signal () of the canceling device (), after treatment of said signal, comprising a time variant filter that suppresses the residual acoustic echo not cancelled by the system () and the noise seized by said microphone/s ().