EP 1248491 B1 20060531 - Ultrasonic parametric speaker system
Title (en)
Ultrasonic parametric speaker system
Title (de)
Ultraschallbasiertes parametrisches Lautsprechersystem
Title (fr)
Système de haut-parleur paramétrique d'ultrason
Publication
Application
Priority
DE 10117529 A 20010407
Abstract (en)
[origin: EP1248491A2] An AM modulator (20) places an original audio signal (10) in a frequency range right (11) and left (12) alongside a carrier frequency. An ultrasonic modulator has a transmission function (30) with a maximum transmission at a frequency (f0), to which the carrier frequency is tuned. Two sidebands are emitted corresponding to the transmission function of the modulator. An Independent claim is also included for a device for triggering a parametric loudspeaker system.
IPC 8 full level
H04R 1/32 (2006.01); H04R 3/00 (2006.01); H04R 1/40 (2006.01); H04R 17/10 (2006.01)
CPC (source: EP US)
H04R 1/323 (2013.01 - EP US); H04R 17/10 (2013.01 - EP US); H04R 2217/03 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1248491 A2 20021009; EP 1248491 A3 20040107; EP 1248491 B1 20060531; AT E328455 T1 20060615; DE 10117528 A1 20030206; DE 10117528 B4 20040401; DE 50206958 D1 20060706; JP 2002315088 A 20021025; US 2002172375 A1 20021121; US 7181025 B2 20070220
DOCDB simple family (application)
EP 02007545 A 20020403; AT 02007545 T 20020403; DE 10117528 A 20010407; DE 50206958 T 20020403; JP 2002105718 A 20020408; US 11863002 A 20020408