Global Patent Index - EP 1284586 A3

EP 1284586 A3 20040804 - Method and system for directional sound generation

Title (en)

Method and system for directional sound generation

Title (de)

Verfahren und System zur gerichteten Audio-Beschallung

Title (fr)

Procédé et système de sonorisation directionnelle

Publication

EP 1284586 A3 20040804 (DE)

Application

EP 02017268 A 20020801

Priority

DE 10140646 A 20010818

Abstract (en)

[origin: EP1284586A2] A method of directional propagation of sound to a listener with acoustically perceptible audio-sound (3) by modulation of the amplitude of an intensive ultra-sound carrier signal (2) radiated as a concentrated beam from an ultra-sound transmitter (1). The audio-sound is directed to the listener (4) by means of a reflector (5), and the ultra-sound-carrier signal is damped before reaching the listener by a device positioned between the ultra-sound transmitter and the listener. Damping of the ultra-sound signal is specifically carried out by means of absorption. An Independent claim is given for a directional sound radiation device.

IPC 1-7

H04R 1/34; G10K 11/28; B60R 11/02

IPC 8 full level

B60R 11/02 (2006.01); G10K 11/28 (2006.01); H04R 1/34 (2006.01); H04R 3/00 (2006.01); H04R 5/02 (2006.01)

CPC (source: EP US)

G10K 11/28 (2013.01 - EP US); H04R 1/345 (2013.01 - EP US); H04R 2217/03 (2013.01 - EP US)

Citation (search report)

  • [X] US 4823908 A 19890425 - TANAKA TSUNEO [JP], et al
  • [A] US 6229899 B1 20010508 - NORRIS ELWOOD G [US], et al
  • [A] US 5598380 A 19970128 - SAURER ERIC [CH], et al
  • [A] US 4884275 A 19891128 - SIMMS ROBERT A [US]
  • [A] US 5889870 A 19990330 - NORRIS ELWOOD G [US]
  • [A] EP 1061770 A2 20001220 - NOKIA MOBILE PHONES LTD [FI]
  • [X] PATENT ABSTRACTS OF JAPAN vol. 016, no. 052 (E - 1164) 10 February 1992 (1992-02-10)
  • [DA] YONEYAMA M ET AL: "THE AUDIO SPOTLIGHT: AN APPLICATION OF NONLINEAR INTERACTION OF SOUND WAVES TO A NEW TYPE OF LOUDSPEAKER DESIGN", JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 73, no. 5, May 1983 (1983-05-01), pages 1532 - 1536, XP000762272, ISSN: 0001-4966
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1999, no. 04 30 April 1999 (1999-04-30)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

EP 1284586 A2 20030219; EP 1284586 A3 20040804; EP 1284586 B1 20060315; DE 10140646 A1 20030313; DE 10140646 C2 20031120; DE 50206061 D1 20060511; JP 2003163986 A 20030606; US 2003035552 A1 20030220

DOCDB simple family (application)

EP 02017268 A 20020801; DE 10140646 A 20010818; DE 50206061 T 20020801; JP 2002238600 A 20020819; US 22315902 A 20020818