EP 1636978 A1 20060322 - SYSTEM FOR THE DIGITAL PROCESSING OF AN ACOUSTIC OR ELECTRICAL SIGNAL, AND TELEPHONE SET PROVIDED WITH SUCH A PROCESSING SYSTEM
Title (en)
SYSTEM FOR THE DIGITAL PROCESSING OF AN ACOUSTIC OR ELECTRICAL SIGNAL, AND TELEPHONE SET PROVIDED WITH SUCH A PROCESSING SYSTEM
Title (de)
DIGITALES VERARBEITUNGSSYSTEM EINES AKUSTISCHEN/ELEKTRISCHEN SIGNALS UND TELEFONAPPARAT DAZU
Title (fr)
SYSTEME DE TRAITEMENT NUMERIQUE D'UN SIGNAL ACOUSTIQUE OU ELECTRIQUE ET POSTE TELEPHONIQUE EQUIPE D'UN TEL SYSTEME DE TRAITEMENT
Publication
Application
Priority
- FR 2004001016 W 20040427
- FR 0307635 A 20030624
Abstract (en)
[origin: FR2856869A1] The system has an automatic gain control unit (30) associated with an echo canceller device (29). A multiplier (36) applies a transfer function of the control unit to an input of the canceller device such that a signal from a microphone (27) and a signal to a loud speaker (28) are manipulated by a function related to the transfer function of the control unit. An independent claim is also included for a telephone set having a digital processing system.
IPC 1-7
IPC 8 full level
H04M 9/08 (2006.01)
CPC (source: EP US)
H04M 9/082 (2013.01 - EP US)
Citation (search report)
See references of WO 2005011248A1
Citation (examination)
US 4600815 A 19860715 - HORNA OTAKAR A [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2856869 A1 20041231; EP 1636978 A1 20060322; US 2006204020 A1 20060914; WO 2005011248 A1 20050203
DOCDB simple family (application)
FR 0307635 A 20030624; EP 04742583 A 20040427; FR 2004001016 W 20040427; US 55783905 A 20051121