Invention Grant
US09479867B2 Method and circuitry for direction of arrival estimation using microphone array with a sharp null
有权
使用具有尖锐零点的麦克风阵列的到达方向估计方法和电路
- Patent Title: Method and circuitry for direction of arrival estimation using microphone array with a sharp null
- Patent Title (中): 使用具有尖锐零点的麦克风阵列的到达方向估计方法和电路
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Application No.: US14323560Application Date: 2014-07-03
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Publication No.: US09479867B2Publication Date: 2016-10-25
- Inventor: Yunhong Li
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Michael A. Davis, Jr.; Frank D. Cimino
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04R1/40
Abstract:
A device is configured for identifying a direction of a sound. The device includes a controller comprising circuitry. The circuitry is configured to receive a first output from a first input device and a second output from a second input device. The circuitry is also configured to add a delay to the second output. The circuitry is also configured to compare the first output to the delayed second output in a plurality of directions to form a comparison. The circuitry is also configured to identify a number of null directions of the plurality of directions where a set of nulls exists based on the comparison.
Public/Granted literature
- US20150016628A1 METHOD AND CIRCUITRY FOR DIRECTION OF ARRIVAL ESTIMATION USING MICROPHONE ARRAY WITH A SHARP NULL Public/Granted day:2015-01-15
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