EP 0677235 A1 19951018 - SOUND IMAGE MANIPULATION APPARATUS AND METHOD FOR SOUND IMAGE ENHANCEMENT.
Title (en)
SOUND IMAGE MANIPULATION APPARATUS AND METHOD FOR SOUND IMAGE ENHANCEMENT.
Title (de)
SCHALLBILDVERARBEITUNG UND VERFAHREN ZUR SCHALLBILDVERBESSERUNG.
Title (fr)
APPAREIL DE MANIPULATION DE L'IMAGE SONORE ET PROCEDE POUR AMELIORER CETTE IMAGE SONORE.
Publication
Application
Priority
- US 9312688 W 19931230
- US 9211335 W 19921231
Abstract (en)
[origin: WO9416538A1] The manipulation system and apparatus receive electronic signals which are to be processed as enhanced stereophonic audio signals from two laterally spaced loudspeakers in front of the listener, either directly before recording or broadcasting, or after recording, or after being broadcast. The system and apparatus process those signals to produce a conditioning signal, such as which would be produced by virtual room boundaries, which is heard together with the original signals so that an enlarged listening area is perceived by the listener. By amplitude and phase control of the signal to the two loudspeakers, the system and apparatus provide a means for control over the enhanced sound field. This enhanced sound field is perceived by the listener as being contained within boundaries larger than those normally reproduced by stereophonic speakers. The system and apparatus generate a conditioning signal for the enhancement of natural, and generation of artificial, spatial qualities present in stereo signals usually masked in the acoustic environment in which reproduction takes place, through generation of phantom boundaries. The apparatus can monitor its own output and shut down or reduce the effects if the output contains qualities that cannot be broadcast. The apparatus provides self-adjustment in the electronic system to maintain spatial masking reversal at a constant value regardless of program material.
IPC 1-7
IPC 8 full level
H04S 1/00 (2006.01); H04S 3/00 (2006.01); H04S 5/02 (2006.01); H04S 7/00 (2006.01); H04S 3/02 (2006.01)
IPC 8 main group level
H04S (2006.01)
CPC (source: EP)
H04S 3/002 (2013.01); H04S 5/00 (2013.01); H04S 5/02 (2013.01); H04S 3/02 (2013.01)
Citation (search report)
See references of WO 9416538A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9416538 A1 19940721; AT E183050 T1 19990815; AU 3427393 A 19940815; AU 6081194 A 19940815; AU 7731098 A 19981001; CA 2153062 A1 19940721; CN 1091889 A 19940907; DE 69325922 D1 19990909; EP 0677235 A1 19951018; EP 0677235 B1 19990804; IL 104665 A0 19930610; IL 104665 A 19981030; IL 122164 A0 19980405; JP H08509104 A 19960924; SG 70557 A1 20000222
DOCDB simple family (application)
US 9312688 W 19931230; AT 94907123 T 19931230; AU 3427393 A 19921231; AU 6081194 A 19931230; AU 7731098 A 19980714; CA 2153062 A 19931230; CN 93101979 A 19930225; DE 69325922 T 19931230; EP 94907123 A 19931230; IL 10466593 A 19930209; IL 12216497 A 19971111; JP 51647193 A 19931230; SG 1996005287 A 19931230