How the soprano flute makes its sound
In the Hornbostel–Sachs system, which classifies instruments by how they produce sound, the soprano flute belongs to the flutes (edge-blown): an air jet is split on a sharp edge, setting the air column vibrating – flutes, recorders, whistles and panpipes.
More broadly it is one of the aerophones (wind instruments), where sound comes from vibrating air.
Its timbre – the colour that lets you tell it apart from other instruments playing the same note – comes from the mix of overtones its body and resonator emphasise.
From Wikipedia
The soprano flute (also called a third flute or tierce flute) is a type of flute, a musical instrument in the woodwind family. It is pitched in E♭, a minor third above the concert flute, and is one of the few members of the modern flute family that is not pitched in C or G. The pitch was set at a time such flutes substituted for the E-flat clarinet.
The instrument is now rare. A few American publications for flute choir currently include a part for E♭ (soprano) flute. In these publications, an alternative part is provided either for the C flute or for the piccolo. With the substitution of one of these more common instruments, however, the distinctive colour of a treble flute sound is missing.
Other flutes
Frequently asked questions
What does a soprano flute sound like?
As one of the flutes, its sound comes from the way an air jet is split on a sharp edge, setting the air column vibrating.
What type of instrument is the soprano flute?
It is classified as flutes (edge-blown) (Hornbostel–Sachs 421.121.12).