In-seat active noise cancellation system for moving vehicles

Abstract

An active noise cancellation system () for cancelling environment noise perceived by a driver or passenger seated in a seat () mounted in a cabin of a vehicle, in combination with said seat, the seat comprising a seat cushion (), a seat back () coupled to the seat cushion at a bottom end and extending upwards to a seat shoulder (), and a headrest () coupled to the seat back, extending upwardly from the seat shoulder, the active noise cancellation system comprising an active noise cancellation circuit (ANC) (), a plurality of microphones () mounted in the headrest and connected electrically to the ANC, and a plurality of speakers () mounted in the seat and connected electrically to the ANC circuit. The plurality of microphones comprises at least one first microphone mounted on a right side of the headrest and at least one second microphone mounted on a left side of the headrest, and the plurality of speakers comprises at least one first speaker mounted in the seat shoulder on a left side and at least one second speaker mounted in the seat shoulder on a right side, the right speaker configured to generate a noise cancellation sound from a noise signal picked up by the right microphone processed by the ANC circuit and the left speaker configured to generate a noise cancellation sound from a noise signal picked up by the left microphone processed by the ANC circuit.