{
  "$type": "site.standard.document",
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  "description": "An alert system for a wheeled vehicle comprising a microphone (22) for generating an audio signal based on rolling noise produced by a wheel (21) of the vehicle, an amplifier (23) for amplifying the audio signal, and a loudspeaker (24) for producing sound in response to the amplified audio signal…",
  "path": "/patents/997622",
  "publishedAt": "2012-10-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60Q5/008",
    "ALCATEL LUCENT [FR]"
  ],
  "textContent": "An alert system for a wheeled vehicle comprising a microphone (22) for generating an audio signal based on rolling noise produced by a wheel (21) of the vehicle, an amplifier (23) for amplifying the audio signal, and a loudspeaker (24) for producing sound in response to the amplified audio signal. Corresponding method of alerting a pedestrian (25) of an approaching wheeled vehicle.",
  "title": "Altert system for wheeled vehicles"
}