Multichannel acoustic echo cancellation for wireless applications

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United States of America Patent

PATENT NO 9997151
SERIAL NO

15001840

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Abstract

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An acoustic echo cancellation (AEC) system that detects and compensates for differences in delay times between the AEC system and a set of wireless speakers. The filter coefficients used for AEC are adjusted based on the determined delay time to correct for frequency domain signal rotation.

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Patent Owner(s)

Patent OwnerAddress
AMAZON TECHNOLOGIES INCPO BOX 81226 SEATTLE WA 98108-1226

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ayrapetian, Robert Morgan Hill, US 41 1442
Hilmes, Philip Ryan San Jose, US 45 2206
Su, Yuwen Cupertino, US 17 311

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