HYBRID HEADSET TUNED FOR OPEN-BACK AND CLOSED-BACK OPERATION
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United States of America Patent
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Issued Date -
Nov 10, 2016
app pub date -
May 6, 2015
filing date -
May 6, 2015
priority date (Note) -
Abandoned
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Abstract
A hybrid headphone includes a variable aperture device configured to reversibly switch the hybrid headphone between an open-back mode of operation and a closed-back mode of operation. Closed-back mode may be used to provide acoustic isolation from ambient noise to improve audio intelligibility of content due to a reduction and/or elimination of the ambient noise. The hybrid headphone may automatically be switched from the open-back mode to the closed-back mode when ANC is activated or in response to a signal or data. The hybrid headphone may include a semi-open-back mode that is between the open-back and closed-back modes. The variable aperture device may be commanded to an open position for the open-back mode, a closed position for the closed-back mode, and a partially open position for the semi-open mode. The variable aperture device may include a shutter, a hole, a port, or a port including a variable acoustic impedance material.
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