Hornbostel - Sachs
Stopped single notch flutes
The air itself is the vibrator in the primary sense. The standing waves are significantly confined within the instrument itself. The player creates a ribbon-shaped stream of air with his/her lips, blowing against the notch at the upper open end of a single tube. The lower end of the tube is closed. The instrument has fingerholes.
Stopped single notch flutes with fingerholes