{
  "$type": "site.standard.document",
  "description": "The invention relates to a sound absorber suitable for an air-flow conduit (1), wherein zones of the sound-bearing conduit thereof are provided with orifices, whose length in flow direction and whose width are dimensioned according to a predetermined size. Based on a predetermined orifice area of…",
  "path": "/patents/1076854",
  "publishedAt": "2005-06-15T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02M35/1216",
    "MANN & HUMMEL GMBH [DE]"
  ],
  "textContent": "The invention relates to a sound absorber suitable for an air-flow conduit (1), wherein zones of the sound-bearing conduit thereof are provided with orifices, whose length in flow direction and whose width are dimensioned according to a predetermined size. Based on a predetermined orifice area of the slit-like orifices, a ratio of the length (L) of the orifices to their width (W) is selected in dependency upon a specific frequency range of the sound emission to be attenuated. On the basis of a predetermined orifice area for the slit-like orifices, it is also possible to select predetermined positions for the slit-like orifices in dependency upon a specific frequency range of the sound emission, wherein said positions are located across the flow direction on the opposite ends of the air-flow conduit.",
  "title": "Sound adsorber suitable for air-flow conduits"
}