How the frilka makes its sound
In the Hornbostel–Sachs system, which classifies instruments by how they produce sound, the frilka 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.
Press play above and watch the spectrum: the evenly spaced peaks are harmonics, and their relative strength is what gives the instrument its character.
From Wikipedia
The frilka (Ukrainian: Фрілка) is a more perfected form of the sopilka, a traditional Ukrainian flute. The frilka is a smaller version of the floyarka.
The frilka is characterized as an open-ended notched flute. It is a pipe of approximately a 20 cm (8 inches) in length. One end is sharpened and the breath is broken against one of the sides of the tube at the playing end. Six holes (now often 10) in groups of three are burnt out in the center of the instrument.
Other flutes
Frequently asked questions
What does a frilka 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 frilka?
It is classified as flutes (edge-blown) (Hornbostel–Sachs 421.111-2).