Nose whistle
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A rosewood nose whiste. The musician puts his nose on the upper hole. The air is directed towards the lower edge, where the open mouth makes the sound.
A nose whistle is a wind instrument of the woodwind family. The nose provides the air into the open mouth, which acts as a soundboard.
[edit] Functioning
The air blown by the nose is channelled towards an edge. The whistle acts like when blowing on a bottle neck, the air resonates in the mouth. The volume of the latter gives the frequency : the smaller the volume, the higher the note.

