Method, system and circuits for headset crosstalk reduction
AssigneeMediatek Inc.
InventorsSung-Han Wen, Yu-Cheng Chang, Kuan-Ta Chen
Life of this patent
Estimating the term…
Abstract
A device for removing crosstalk includes a jack to form an electrical connection with a plug, and an audio unit to provide a left audio channel and a right audio channel to the plug. The audio unit includes a crosstalk cancellation circuit. The crosstalk cancellation circuit estimates the crosstalk between the left audio channel and the right audio channel to obtain an estimated right-to-left crosstalk and an estimated left-to-right crosstalk, and to remove the crosstalk by subtracting the estimated right-to-left crosstalk and the estimated left-to-right crosstalk from digital signals in the left audio channel and the right audio channel, respectively.
Claims17
A device operative to remove crosstalk, the device comprising:
- an audio unit to provide a left audio channel and a right audio channel to a plug;
- and
- a jack to form an electrical connection with the plug,
- wherein the audio unit further comprises:
- a crosstalk cancellation circuit to estimate the crosstalk between the left audio channel and the right audio channel to obtain an estimated right-to-left crosstalk and an estimated left-to-right crosstalk, and to remove the crosstalk by subtracting the estimated right-to-left crosstalk and the estimated left-to-right crosstalk from digital signals in the left audio channel and the right audio channel, respectively.
A device operative to remove crosstalk, the device comprising:
- an audio unit to provide a left audio channel, a right audio channel and a microphone channel to a plug;
- a jack to form an electrical connection with the plug;
- and
- a swap switch configurable to swap connections of a ground terminal and a microphone terminal of the plug to the audio unit,
- wherein the audio unit further comprises:
- a crosstalk cancellation circuit to estimate the crosstalk from the left audio channel and the right audio channel to the microphone channel to obtain an estimated left-to-microphone crosstalk and an estimated right-to-microphone crosstalk, and to remove the crosstalk by subtracting the estimated left-to-microphone crosstalk and the estimated right-to-microphone crosstalk from a digital signal in the microphone channel.
Dependencies are inferred from the claim text.