Method for improving spatial perception in virtual surround
First Claim
1. A method for improving the spatial perception of multiple sound channels when reproduced by two loudspeakers, each channel representing a direction, comprisingapplying some of said channels to said loudspeakers with headphone and crosstalk cancelling processing, wherein said headphone processing includes adding simulated reflections and/or artificial ambience to said some of said channels, andapplying the other ones of said sound channels to said loudspeakers without headphone and crosstalk cancelling processing and without adding simulated reflections and/or artificial ambience to such other ones of said sound channels.
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Abstract
A method for improving the spatial perception of multiple sound channels when reproduced by two loudspeakers, generally front-located with respect to listeners, each channel representing a direction, applies some of the channels, such as sound channels representing directions other than front directions, to the loudspeakers with headphone and crosstalk cancelling processing, and applies the other ones of the sound channels, such as sound channels representing front directions to the loudspeakers without headphone and crosstalk cancelling processing. The headphone processing includes applying directional HRTFs to channels applied to the loudspeakers with headphone and crosstalk cancelling processing and may also include adding simulated reflections and/or artificial ambience to channels applied to the loudspeakers with headphone and crosstalk cancelling processing.
28 Citations
12 Claims
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1. A method for improving the spatial perception of multiple sound channels when reproduced by two loudspeakers, each channel representing a direction, comprising
applying some of said channels to said loudspeakers with headphone and crosstalk cancelling processing, wherein said headphone processing includes adding simulated reflections and/or artificial ambience to said some of said channels, and applying the other ones of said sound channels to said loudspeakers without headphone and crosstalk cancelling processing and without adding simulated reflections and/or artificial ambience to such other ones of said sound channels.
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7. Audio apparatus for improving the spatial perception of multiple sound channels when reproduced by two loudspeakers, each channel representing a direction, comprising
a processor receiving some of said sound channels and delivering two output signals, said processor including a headphone processor employing directional HRTFs and a crosstalk canceller, wherein said headphone processor further includes a simulated reflections and/or artificial ambience processor, a first additive combiner receiving one of the outputs of said processor and receiving the channels other than the channels applied to said processor with relative proportions in accordance with their directions, wherein the channels other than the channels applied to said processor have no added simulated reflections and/or artificial ambience, and providing a signal for one of said loudspeakers, a second additive combiner receiving the other of the outputs of said processor and receiving the channels other than the channels applied to said processor with relative proportions in accordance with their directions, wherein the channels other than the channels applied to said processor have no added simulated reflections and/or artificial ambience, and providing a signal for the other of said loudspeakers.
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11. A method for improving the spatial perception of multiple sound channels when reproduced by two loudspeakers, each channel representing a direction, comprising
applying some of said channels to said loudspeakers with headphone and crosstalk cancelling processing, wherein said headphone processing includes adding simulated reflections and/or artificial ambience to channels applied to said loudspeakers, and applying the other ones of said sound channels to said loudspeakers without headphone and crosstalk cancelling processing and without adding simulated reflections and artificial ambience to such other ones of said sound channels.
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12. A method for improving the spatial perception of multiple sound channels when reproduced by two loudspeakers, each channel representing a direction, comprising
applying some of said channels to said loudspeakers with headphone and crosstalk cancelling processing, wherein said headphone processing includes adding simulated reflections and artificial ambience to said some of said channels, and applying the other ones of said sound channels to said loudspeakers without headphone and crosstalk cancelling processing and without adding simulated reflections and artificial ambience to such other ones of said sound channels.
Specification