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 17/00 (2006.01); H04R 1/00 (2006.01); H04R 1/40 (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)
Citation (search report)
See references of WO 9908479A1
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