![]() ![]() ![]() Generally, a hole in a given position doesn't reduce the effective length quite as much as cutting the pipe at that position would, and the smaller the hole, the less it reduces the effective length when open. The closer an open hole is to the blowing end, the shorter the remaining effective length is and the more it raises the pitch. An open hole anywhere along the middle of the pipe shortens the pipe's effective length and therefore raises the pitch of the notes it produces. For a pipe with no tone holes but open at both ends, the effective length is the physical length of the pipe plus a little more for the small volumes of air just beyond the ends of the pipe that are also involved in the resonance. In other words, a shorter pipe produces higher notes. The resonant frequencies of the air column in a pipe are inversely proportional to the pipe's effective length. A tone hole is, "in wind instruments a hole that may be stopped by the finger, or a key, to change the pitch of the tone produced." Tone holes may serve specific purposes, such as a trill hole or register hole. A selection of flutes from around the worldĪ tone hole is an opening in the body of a wind instrument which, when alternately closed and opened, changes the pitch of the sound produced. JSTOR ( December 2009) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. ![]() This article needs additional citations for verification. ![]()
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