Global patent index - EP 1041538 A1

EP 1041538 A1 2000-10-04 - Mechanical filter for acoustic systems and television set equipped with such filters

Title (en)

Mechanical filter for acoustic systems and television set equipped with such filters

Title (de)

Mechanisches Filter für akustische Systeme sowie mit solche Filter ausgerüstete Fernsehern

Title (fr)

Filtre mécanique pour systèmes acoustiques et televiseur equipé de tels filtres

Publication

EP 1041538 A1 (EN)

Application

EP 00201058 A

Priority

FR 9903964 A

Abstract (en)

The invention relates to a mechanical filter for acoustic systems comprising at least one loudspeaker (6) and an acoustic horn (5) associated with the loudspeaker, the one open end (7) of the horn being secured to the edge (8) of the diaphragm (9) of the loudspeaker and the other open end (4) of the horn constituting the acoustic output. The horn exhibits rigid walls of which a part (10, 11) is rendered flexible, the flexible part of the horn being able to vibrate under the acoustic pressure inside the horn so as to filter or absorb the resonant peak(s) in the acoustic response of the rigid horn. The invention is particularly beneficial in improving the acoustic system for television sets. <IMAGE>

IPC 1-7 (main, further and additional classification)

G10K 11/04; H04R 1/28

IPC 8 full level (invention and additional information)

H04N 5/64 (2006.01); G10K 11/04 (2006.01); H04R 1/02 (2006.01); H04R 1/28 (2006.01); H04R 1/30 (2006.01)

CPC (invention and additional information)

H04R 1/30 (2013.01); G10K 11/04 (2013.01); H04R 1/2819 (2013.01); H04R 1/2857 (2013.01); H04R 1/288 (2013.01); H04R 2499/15 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

EP 1041538 A1 20001004; EP 1041538 B1 20061220; CN 1181673 C 20041222; CN 1270473 A 20001018; DE 60032407 D1 20070201; DE 60032407 T2 20071011; ES 2277814 T3 20070801; FR 2791802 A1 20001006; JP 2000308175 A 20001102

INPADOC legal status

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