{
  "$type": "site.standard.document",
  "description": "The device has a position sensor determining a position of a head of a passenger. A treatment unit is connected to a local noise sound sensor to receive a local noise signal, and delivers a control signal to a sound actuator, where the control signal is function of the local noise signal and…",
  "path": "/patents/975507",
  "publishedAt": "2014-04-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60N2/879",
    "AIRBUS HELICOPTERS [FR]"
  ],
  "textContent": "The device has a position sensor determining a position of a head of a passenger. A treatment unit is connected to a local noise sound sensor to receive a local noise signal, and delivers a control signal to a sound actuator, where the control signal is function of the local noise signal and transfer function per ear and relates to transferring sound waves between a sound actuator and the passenger. An active matching unit co-operates with the sensor to keep the transfer function used in preparing the control signal representative of a path traveled by anti-noise. An independent claim is also included for a method for attenuating noise on a board in a vehicle.",
  "title": "Method and active device for dealing with noise on board a vehicle, and vehicle provided with such a device"
}