Abstract
We describe an ambisonics enhancement method that increases the signal strength in specified directions at a low computational cost. The strengthening method is referred to as a utilization of an enhancement operator. The operator can be used in a static setup to emphasize the signal arriving from a particular direction or set of directions, much like a spotlight amplifies the visibility of objects in one direction. It can also be used in an adaptive arrangement where it sharpens the directionality and reduces the distortions in timbre associated with low-degree ambisonics representations. The enhancement operator can be applied directly to time-domain ambisonics representations but also to time-frequency ambisonics representations.
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