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:
Dec. 22, 2009
Filed:
Nov. 04, 2005
Grégoire Le Tourneur, St Quay-Perros, FR;
David Deleam, Perros Guirec, FR;
Grégoire Le Tourneur, St Quay-Perros, FR;
David Deleam, Perros Guirec, FR;
France Telecom, Paris, FR;
Abstract
This device for processing audio signals for telecommunication equipment comprises automatic gain control means () acting on the level of the received audio signal (Sr) by amplifying and attenuating the signal as a function of the level of the received signal and echo cancelling means (). The automatic gain control means () comprise amplification means (-) and attenuation means (-) for separately amplifying and attenuating the received signal downstream and upstream of the echo cancelling means (), when considering the propagation direction of the received signal.