Grove defines this stop as follows:: Rauschwerk is frequently used to replace [Rauschpfeife or Rauschquinte]; but for early sources (e.g. A. Schlick, 1511), �Rauschwerk� was a term denoting either a semi-Flute solo compound stop imitating a reed instrument, or a reed stop itself, probably of more refined tone than the Trompete. Williams defines it only as a reed stop, as described by Grove.
All known examples are listed below. No examples are known of the reed form.