US Patent 9900723 Multi-channel loudspeaker matching using variable directivity
Patent 9900723 was granted and assigned to Apple (company) on February, 2018 by the United States Patent and Trademark Office.
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An audio system that maintains an identical or similar direct-to-reverberant ratio for sound produced from a first speaker array and sound produced by a second speaker array at the location of a listener is described. The audio system may determine characteristics of the first and second speaker arrays, including the distance between the first speaker array and the listener and the second speaker array and the listener. Based on these characteristics, beam patterns are selected for one or more of the speaker arrays such that sound produced by each of the speaker arrays maintains a preferred direct-to-reverberant ratio at the location of the listener.
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