Invention Grant
- Patent Title: Active noise cancellation
- Patent Title (中): 主动降噪
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Application No.: US12913897Application Date: 2010-10-28
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Publication No.: US08750531B2Publication Date: 2014-06-10
- Inventor: Cary L. Delano , Steven M. Waldstein
- Applicant: Cary L. Delano , Steven M. Waldstein
- Applicant Address: US CA San Jose
- Assignee: Fairchild Semiconductor Corporation
- Current Assignee: Fairchild Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Agency: Schwegman, Lundberg & Woessner P.A.
- Main IPC: A61F11/06
- IPC: A61F11/06 ; G10K11/16 ; H03B29/00 ; G10L21/0216

Abstract:
This document discusses, among other things, systems and methods for active noise cancellation. One example system includes a digital ANC circuit configured to receive first audio information from a first microphone and to produce an a digital anti-noise signal configured to attenuate noise sensed by the first microphone; an analog ANC circuit configured to receive second audio information from a second microphone and to produce an analog anti-noise signal configured to attenuate noise sensed by the second microphone; and wherein the system is configured to receive an intended audio signal and to provide an output signal for a speaker using the intended audio signal, the analog anti-noise signal, and the digital anti-noise signal.
Public/Granted literature
- US20110129098A1 ACTIVE NOISE CANCELLATION Public/Granted day:2011-06-02
Information query
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