H - Electricity – 04 – R
Patent
H - Electricity
04
R
H04R 5/00 (2006.01) H04R 5/04 (2006.01) H04S 3/00 (2006.01)
Patent
CA 2324224
An apparatus for realistically reproducing sound includes a front speaker (20) located in proximity to the video image for providing acoustic output based upon a summation signal of the component left and right (L + R) channels of the audio signal. A rear speaker (26) located to the rear of the viewing area provides acoustic output based upon a difference signal, (L - R or R - L), between the left and right channels. The left and right side speakers (22, 24) are located to the respective left and right sides of the viewing area. The left side speaker (22) provides two acoustic outputs in accordance with a band limited left channel signal and a band limited difference signal. The right side speaker (24) provides two acoustic outputs in accordance with a band limited right channel signal and a band limited difference signal. Band limiting substantially filters out frequency components below a predetermined threshold.
L'invention porte sur un dispositif réaliste de reproduction sonore inclut un haut-parleur frontal (20), voisin de l'image vidéo, et émettant un signal somme des signaux stéréophoniques (L + R), un haut-parleur arrière (26) opposé à l'image vidéo et émettant un signal différence des signaux stéréophoniques (L - R ou R - L), et les haut-parleurs L et R (22, 24) placés respectivement à gauche et à droite de la zone de vision. Le haut-parleur de gauche (22) émet deux signaux correspondant au signal gauche à bande limitée, et à un signal différentiel à bande limitée. Le haut-parleur de droite (24) émet deux signaux correspondant au signal droit à bande limitée, et à un signal différentiel à bande limitée. La limitation de bande filtre sensiblement les composantes de fréquence inférieures à un seuil donné.
Macrae & Co.
Rep Investment Limited Liability Company
LandOfFree
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