Invention Grant
- Patent Title: Spatial interference suppression using dual-microphone arrays
- Patent Title (中): 使用双麦克风阵列的空间干扰抑制
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Application No.: US13713357Application Date: 2012-12-13
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Publication No.: US09210499B2Publication Date: 2015-12-08
- Inventor: Haohai Sun , Espen Moberg
- Applicant: CISCO TECHNOLOGY, INC.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Lempia Summerfield Katz LLC
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04R1/32 ; H04R1/40

Abstract:
Systems, processes, devices, apparatuses, algorithms and computer readable medium for suppressing spatial interference using a dual microphone array for receiving, from a first microphone and a second microphone that are separated by a predefined distance, and that are configured to receive source signals, respective first and second microphone signals based on received source signals. A phase difference between the first and the second microphone signals is calculated based on the predefined distance. An angular distance between directions of arrival of the source signals and a desired capture direction is calculated based on the phase difference. Directional-filter coefficients are calculated based on the angular distance. Undesired source signals are filtered from an output based on the directional-filter coefficients.
Public/Granted literature
- US20140169576A1 SPATIAL INTERFERENCE SUPPRESSION USING DUAL-MICROPHONE ARRAYS Public/Granted day:2014-06-19
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