Invention Grant
- Patent Title: Remote ground sensing for reduced crosstalk of headset and microphone audio signals
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Application No.: US14944702Application Date: 2015-11-18
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Publication No.: US10015578B2Publication Date: 2018-07-03
- Inventor: Oscar W. Freitas
- Applicant: Fairchild Semiconductor Corporation
- Applicant Address: US CA San Jose
- Assignee: Fairchild Semiconductor Corporation
- Current Assignee: Fairchild Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Agency: Brake Hughes Bellermann LLP
- Main IPC: H04R1/10
- IPC: H04R1/10 ; H04R29/00

Abstract:
Apparatus and methods for reducing crosstalk in personal audio equipment are provided. In an example, a method to reduce headset audio crosstalk can include applying a first signal to a first speaker channel of a headset, coupling a second speaker channel to a first input of a comparator of a crosstalk compensation circuit using a first switch of the crosstalk compensation circuit, the switch and detect circuit including the crosstalk compensation circuit, coupling a first resistor divider to a second input of the comparator using a second switch of the crosstalk compensation circuit, and adjusting a resistance setting of the first resistor divider from an initial setting using an output of the comparator.
Public/Granted literature
- US20160142810A1 REMOTE GROUND SENSING FOR REDUCED CROSSTALK OF HEADSET AND MICROPHONE AUDIO SIGNALS Public/Granted day:2016-05-19
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