Raising airflow or lowering cut-up makes flute pitch jump discretely

Evidence

In other words, f0 can be raised by either increasing the airflow velocity or reducing the cut-up. As the airflow velocity is increased or the cut-up size is decreased, there comes a point at which the f0 jumps up in value. This effect can be observed in the presence of a resonator with respect to increasing the airflow velocity by blowing with an increasing flow rate into a recorder (or, if available, a flue organ pipe). It is often referred to as an “overblown” mode. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1144

Categorization

• XREF: Connects to whistle/aeroacoustic feedback literature on edge tones and jet instability, and to my interest in how breath pressure shapes perceived sound during my own listening.