CPC G10K 11/17853 (2018.01) [G10K 11/17825 (2018.01); G10K 11/17881 (2018.01)] | 19 Claims |
1. An active noise cancellation integrated circuit for stacking multiple anti-noise signals, comprising:
a first path, outputting a first path anti-noise signal, wherein the first path anti-noise signal is converted into a first signal by a physical channel, wherein the first path comprises:
a first active noise cancellation (ANC) filtering unit, for generating a first anti-noise signal;
a second path, receiving an error signal comprising a component of the first signal, and outputting a second path anti-noise signal to the physical channel, wherein the second path comprises:
a second ANC filtering unit, for generating a second anti-noise signal, wherein the second path anti-noise signal is derived from the second anti-noise signal; and
a first decoupling unit, for removing the component of the first signal from the second path based on the first anti-noise signal.
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