{
  "$type": "site.standard.document",
  "description": "A method of characterizing a noise signal includes receiving (90) a noise signal sensed by a knock sensor coupled to a reciprocating device, preconditioning (92) the noise signal to derive a preconditioned noise signal, applying (94) an ADSR envelope to the preconditioned noise signal, extracting…",
  "path": "/patents/940781",
  "publishedAt": "2016-07-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D35/027",
    "GEN ELECTRIC [US]"
  ],
  "textContent": "A method of characterizing a noise signal includes receiving (90) a noise signal sensed by a knock sensor coupled to a reciprocating device, preconditioning (92) the noise signal to derive a preconditioned noise signal, applying (94) an ADSR envelope to the preconditioned noise signal, extracting (96) tonal information from the preconditioned noise signal, and creating (98) a fingerprint of the noise signal based on the ADSR envelope, the tonal information, or a combination thereof.",
  "title": "METHODS AND SYSTEMS TO CHARACTERIZE NOISES SENSED BY A KNOCK SENSOR"
}