ROBUST CROSSTALK CANCELLATION USING A SPEAKER ARRAY

摘要

An audio receiver that performs crosstalk cancellation using a speaker array is described. The audio receiver detects the location of a listener in a room and processes a piece of sound program content to be output through the speaker array using one or more beam pattern matrices. The beam pattern matrices are generated according to one or more constraints. The constraints may include increasing a right channel and decreasing a left channel at the right ear of the listener, increasing a left channel and decreasing a right channel at the left ear of the listener, and decreasing sound in all other areas of the room. These constraints cause the audio receiver to beam sound primarily towards the listener and not in other areas of the room such that crosstalk cancellation is achieved with minimal effects due to changes to the frequency response of the room. Other embodiments are also described.

主权项

1. A method of performing crosstalk cancellation, comprising:
identifying a location of a listener in a room; retrieving a previously stored set of beam pattern matrices corresponding to the identified location of the listener from a storage that contains a plurality of beam pattern matrices; and driving a speaker array to produce a set of beam patterns based on the retrieved beam pattern matrices, wherein the beam patterns (1) increase a left channel and decrease a right channel of a piece of sound program content at the left ear of the listener, (2) increase the right channel and decrease the left channel at the right ear of the listener, and (3) decrease sound power in all other areas of the room.