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Concept
Fipple
Résumé
The term fipple specifies a variety of end-blown flute that includes the flageolet, recorder, and tin whistle. The Hornbostel–Sachs system for classifying musical instruments places this group under the heading "Flutes with duct or duct flutes." The label "fipple flute" is frequently applied to members of the subgroup but there is no general agreement about the structural detail of the sound-producing mechanism that constitutes the fipple, itself.
The accompanying illustration of the mouthpiece of a recorder shows a wooden block (A) with a channel carved into the body of the instrument (B), together forming a duct that directs a ribbon of air across an opening toward a sharp edge (C). The edge splits the air in a manner that alternately directs it into and outside of the tube, setting the contained column of air into periodic vibration. This flow-controlled "air reed" is a definitive characteristic of all flutes, which therefore all have an edge or equivalent air-splitting device.
As is clear from the Hornbostel-Sachs heading, there are several ways in which a duct can be formed. These include the player's lips controlling the stream of air as it is directed to the edge, without mechanical assistance. Common examples of this are the end-blown ney and the side-blown concert flute. The first attested use of the term fipple is in a comparison between the recorder and the transverse flute by Francis Bacon, published in 1626.
Recorders...were it not for the fipple, that straitneth the air...would yeeld no sound. ... Some kinds of winde-instruments, are blowne at a small hole in the side, which straitneth the breath at the first entrance, the rather in respect of their traverse, and stop above the hole, which performeth the fipples part, as is seene in flutes and fifes, which will not give a sound by a blast at the end, as recorders &c., doe.
By this description, the fipple is a plug that nearly closes one end of the pipe, open only for the duct that "straightens” the channel of air blown axially into the instrument.
Source officielle
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