| 摘要 |
<p>The invention providesspatial sound reproduction system for sound reproduction of a set ofaudio signals. Across-talk cancellation unit is arranged to receive the set ofaudio signalsand generate a processed set ofaudio signalsin response. The processed set ofaudio signalsis then reproduced by aset of loudspeaker drivers positioned atan elevation angle, relative to the listener s head, being larger than +50° or smaller than -50°(i.e. above or below the listener), and with thecross-talk cancellation unit beingarranged to reduce acoustic cross-talk corresponding tothe actual positionof the set of loudspeaker drivers. Preferably, 10 the set of loudspeaker drivers are positioned at an elevation angle larger than 70°, preferably right above the listener, laterally symmetric relative to the listener. The set of loudspeaker drivers may be configured as a stereo dipole, e.g. with a mutual distance of 10-20 cm.Further, a second reproduction chain with at least one loudspeaker driver is positioned at an azimuth angle in the range -60°to +60°, larger than +120°, or smaller than -120°, e.g. directly in front of or directly behind the listener, in order to improve reproduction of front/back directions.Further reproduction chains each with one or two loudspeaker drivers at different positions may be included. Preferably, the reproduction chain with loudspeakers positioned at a high elevation is arranged to reproduce lateral sound 20 sourcedirections as well as above andbelowdirections, while the second reproduction chain, e.g. with a front or back loudspeaker,servesto reproduce sound source directions primarily corresponding to the physical position. The second and/or furtherreproduction chains may each havetwo loudspeaker driver systems with or without respective cross-talk cancellation units, and the two loudspeakerdrivers may be configured as stereo dipoles.</p> |
