Invention Grant
- Patent Title: Elevated toroid microphone apparatus
- Patent Title (中): 高架环形麦克风设备
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Application No.: US12645701Application Date: 2009-12-23
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Publication No.: US08472640B2Publication Date: 2013-06-25
- Inventor: Trygve Frederik Marton
- Applicant: Trygve Frederik Marton
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: NO20085371 20081223
- Main IPC: H04R3/00
- IPC: H04R3/00

Abstract:
A video teleconferencing directional microphone includes three microphone elements arranged coincidentally on a vertical axis. The three microphone elements are placed on a supporting surface so that a first microphone element is on the surface, and the second and third microphone elements are elevated above the supporting surface. The directional microphone also includes three filters, a summing node, and an equalizer, which are used to shape the directivity pattern of the directional microphone into an elevated toroid sensitivity pattern. The elevated toroid sensitivity pattern increases sensitivity in the direction of a sound source of interest, but reduces sensitivity to any sound waves generated by noise sources at other locations.
Public/Granted literature
- US20100166219A1 ELEVATED TOROID MICROPHONE APPARATUS Public/Granted day:2010-07-01
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