{
  "$type": "site.standard.document",
  "description": "The method of noise attenuation comprises the steps of generating a noise canceling signal, sensing for an system condition, and ceasing the generation of the noise canceling based upon the system condition. This method is embodied in a system that includes an air induction body (10), a speaker…",
  "path": "/patents/1109453",
  "publishedAt": "2001-10-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F01N1/065",
    "SIEMENS CANADA LTD [CA]"
  ],
  "textContent": "The method of noise attenuation comprises the steps of generating a noise canceling signal, sensing for an system condition, and ceasing the generation of the noise canceling based upon the system condition. This method is embodied in a system that includes an air induction body (10), a speaker (14) in proximity to the air induction body (10), a sensor (16, 27) for sensing a system condition, and a control unit (18) with a noise cancellation feature. The control unit (18) is in communication with both the speaker (14) and the sensor (26,27). Based upon the sensed system condition, the control unit (18) may disable the noise cancellation feature.",
  "title": "Active noise cancellation stability solution"
}