How the Design of a Native American Flute Affects the Way it Plays
Here are some observations, from the perspective of a player, about the affects that the various design aspects of the Native American flute have on the playing characteristics of the Native American flute.
Of course, there are no absolutes or value judgments here. Just a comparison between two hypothetical flutes that differ only in one particular aspect.
Finger Hole Size
Flutes with smaller finger holes respond to changes in breath pressure with greater changes in pitch vs. flutes with larger finger holes.
The fundamental note (all finger holes closed) is more resonant on flutes without direction holes versus flutes with direction holes.
Flutes with direction holes have a more consistent timber between the fundamental note and the next note up versus flutes without direction holes.
Mouth hole size
Bore length / diameter ratio
A flute with a smooth ramp that supports smooth airflow into the flue will tend to overblow less vs. a flute that has a ramp with sharp edges or an irregular shape.
A flute with a sharp splitting edge will have a brighter, more modern sound, with more prominant overtones versus a flute with a more blunt splitting edge.