Editing Overtone (section)

===Wind instruments===
Wind instruments manipulate the overtone series significantly in the normal production of sound, but various playing techniques may be used to produce [[multiphonics]] which bring out the overtones of the instrument. On many woodwind instruments, alternate fingerings are used. "Overblowing<ref>{{Cite web|title=Flute|url=http://hyperphysics.phy-astr.gsu.edu/hbase/Music/flute4.html|access-date=2021-02-27|website=hyperphysics.phy-astr.gsu.edu}}</ref>", or adding intensely exaggerated air pressure, can also cause notes to split into their overtones. In brass instruments, multiphonics may be produced by singing into the instrument while playing a note at the same time, causing the two pitches to interact - if the sung pitch is at specific harmonic intervals with the played pitch, the two sounds will blend and produce additional notes by the phenomenon of [[sum and difference tones]].

Non-western wind instruments also exploit overtones in playing, and some may highlight the overtone sound exceptionally. Instruments like the [[didgeridoo]] are highly dependent on the interaction and manipulation of overtones achieved by the performer changing their mouth shape while playing, or singing and playing simultaneously. Likewise, when playing a [[harmonica]] or [[pitch pipe]], one may alter the shape of their mouth to amplify specific overtones. Though not a wind instrument, a similar technique is used for playing the [[jaw harp]]: the performer amplifies the instrument's overtones by changing the shape, and therefore the [[acoustic resonance|resonance]], of their [[vocal tract]].