EP 0026224 A4 19810827 - DIMENSIONAL SOUND PRODUCING APPARATUS AND A SOUND RECORDING.
Title (en)
DIMENSIONAL SOUND PRODUCING APPARATUS AND A SOUND RECORDING.
Title (de)
APPARAT ZUR HERSTELLUNG VON STEREOPHONKLÄNGEN UND EINE TONAUFNAHME.
Title (fr)
APPAREIL DE PRODUCTION DE SONS EN STEREOPHONIE ET UN ENREGISTREMENT DE SONS.
Publication
Application
Priority
- US 2747279 A 19790405
- US 2747379 A 19790405
Abstract (en)
[origin: WO8002219A1] Sound reproducing system having right and left speakers, (S(R) and S(L)), respectively, which produce right and left stereo sounds, respectively (Fig. 3). A right stereo signal in addition to driving the right speaker (S(R)), is inverted (B(RL)) and delayed (b1(RL) to b4(RL)) to produce a compensating signal which is transmitted to the left speaker (S(L)) to produce a delayed compensating sound pattern from the left speaker. The signal for the left speaker (S(L)) is inverted (B(LR)) and delayed (b1(LR) to b4(LR)) in a manner to produce a compensating sound pattern from the right speaker. The compensating sounds substantially cancel the main stereo sounds (R1 and Lr) travelling to a person"s ear (Re and Le) that is further from that speaker, to produce a dimensionalized effect where some of the sounds appear to be outside of the speaker area. In a second embodiment, the main stereo signals and the compensating signals are used to produce a recording (Fig. 10) which in turn produces the main stereo sounds and the compensating sounds to produce a dimensionalized effect.
IPC 1-7
IPC 8 full level
H04S 1/00 (2006.01)
CPC (source: EP)
H04S 1/002 (2013.01)
Designated contracting state (EPC)
FR
DOCDB simple family (publication)
WO 8002219 A1 19801016; CA 1147228 A 19830531; DE 3041429 A1 19820211; DE 3041429 C2 19920312; EP 0026224 A1 19810408; EP 0026224 A4 19810827; GB 2058524 A 19810408; GB 2058524 B 19840215; JP S56500477 A 19810409
DOCDB simple family (application)
US 8000354 W 19800404; CA 343888 A 19800117; DE 3041429 A 19800404; EP 80900851 A 19801023; GB 8038858 A 19800404; JP 50103280 A 19800404