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(11) | EP 0 975 201 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | A method of processing a plural channel audio signal |
| (57) A method of processing a plural channel audio signal representing a three dimensional
sound-field for generation by respective left and right loudspeakers arranged at a
given distance from a listener, including:- a) choosing a distance between said loudspeakers
and said listener; b) determining from this chosen distance an optimal amount of transaural
crosstalk compensation, the optimal amount being a function of the chosen distance;
and c) applying said optimal amount of crosstalk compensation to said left and right
channels. The optimal transaural crosstalk cancellation is preferably achieved using
a near ear response transfer function and a far ear response transfer function which
asymptotically approach different values at low frequencies. The method may further
include choosing an angle between the left channel loudspeaker and the right channel
loudspeaker, and determining from both the chosen angle and the chosen distance an
optimal amount of transaural crosstalk compensation. |