Invention Grant
- Patent Title: Multi-channel echo cancellation and noise suppression
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Application No.: US14156292Application Date: 2014-01-15
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Publication No.: US09936290B2Publication Date: 2018-04-03
- Inventor: Asif Iqbal Mohammad , Lae-Hoon Kim , Ian Ernan Liu , Erik Visser
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Austin Rapp & Hardman, P.C.
- Main IPC: H04B3/20
- IPC: H04B3/20 ; H04M9/08 ; H04R3/00 ; G10K11/16

Abstract:
A method for multi-channel echo cancellation and noise suppression is described. One of multiple echo estimates is selected for non-linear echo cancellation. Echo notch masking is performed on a noise-suppressed signal based on an echo direction of arrival (DOA) to produce an echo-suppressed signal. Non-linear echo cancellation is performed on the echo-suppressed signal based, at least in part, on the selected echo estimate.
Public/Granted literature
- US20140328490A1 MULTI-CHANNEL ECHO CANCELLATION AND NOISE SUPPRESSION Public/Granted day:2014-11-06
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