The flageolet is a woodwind instrument and a member of the fipple flute family. This is very important to tone production on any fipple flute. The edge of the hole acts as a fipple. At that time, slide saxophones, with reeds rather than a fipple, were also built. They belong to the same woodwind instrument family of end-blown fipple flutes. There are two varieties of bansuri&colon; transverse and fipple. These flutes have a fipple to direct the air at an edge. Fipple flutes are found in many cultures around the world. A referee's whistle is technically a fipple vessel flute, although it only plays one note. Amongst the finds was a fipple flute, a type of early recorder. The fife, however, is a transverse (side-blown) flute, whereas the pipe is a fipple flute. The shvi (, "whistle", pronounced "sh-vee") is a fipple flute with a labium mouth piece.