EP 1002445 A1 20000524 - SOUND RADIATING DEVICES/SYSTEMS
Title (en)
SOUND RADIATING DEVICES/SYSTEMS
Title (de)
VORRICHTUNG / SYSTEM ZUR SCHALLABSTRAHLUNG
Title (fr)
DISPOSITIFS/SYSTEMES EMETTANT DES SONS
Publication
Application
Priority
- GB 9802288 W 19980730
- GB 9716412 A 19970805
Abstract (en)
[origin: WO9908479A1] Sound radiator has an areally distributed array of plural acoustic transducers having individual drive means. A large number of transducers can be used and can be of any type. Drive signals produce phase-different sound radiations from the transducers in distributions over the area of the array having desired diffuse or particularly voiced nature. Drive signal producing means involves phase-shifting higher acoustic frequency content, and is further operative for in-phase action of at least some of the transducers in sub-area(s) of the array for lower frequency content.
IPC 1-7
IPC 8 full level
H04R 1/00 (2006.01); H04R 1/40 (2006.01); H04R 17/00 (2006.01); H04R 3/12 (2006.01); H04R 9/06 (2006.01); H04R 19/00 (2006.01)
CPC (source: EP KR)
H04R 1/40 (2013.01 - KR); H04R 1/403 (2013.01 - EP); H04R 3/12 (2013.01 - EP); H04R 1/005 (2013.01 - EP); H04R 17/00 (2013.01 - EP); H04R 19/00 (2013.01 - EP); H04R 2430/20 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9908479 A1 19990218; AR 013281 A1 20001213; AU 741154 B2 20011122; AU 8551998 A 19990301; BG 104072 A 20000831; BR 9811836 A 20000815; CA 2295724 A1 19990218; CN 1266604 A 20000913; EA 002176 B1 20020228; EA 200000195 A1 20001030; EP 1002445 A1 20000524; GB 9716412 D0 19971008; HU P0101998 A2 20010928; ID 24975 A 20000831; IL 133985 A0 20010430; JP 2001513619 A 20010904; KR 20010022624 A 20010326; MX PA00001277 A 20040405; NO 20000588 D0 20000204; NO 20000588 L 20000204; NZ 501959 A 20001124; PL 338378 A1 20001023; SK 1632000 A3 20000912; TR 200000351 T2 20000522; TW 392415 B 20000601; YU 5400 A 20020318; ZA 986927 B 19990208
DOCDB simple family (application)
GB 9802288 W 19980730; AR P980103849 A 19980804; AU 8551998 A 19980730; BG 10407200 A 20000112; BR 9811836 A 19980730; CA 2295724 A 19980730; CN 98807982 A 19980730; EA 200000195 A 19980730; EP 98936555 A 19980730; GB 9716412 A 19970805; HU P0101998 A 19980730; ID 20000059 A 19980730; IL 13398598 A 19980730; JP 2000506798 A 19980730; KR 20007001218 A 20000203; MX PA00001277 A 19980730; NO 20000588 A 20000204; NZ 50195998 A 19980730; PL 33837898 A 19980730; SK 1632000 A 19980730; TR 200000351 T 19980730; TW 87112629 A 19980731; YU 5400 A 19980730; ZA 986927 A 19980803