Organ pipes exemplify both reed and flue wind-instrument sound sources

Evidence

Wind instruments can be split into those with and those without reeds, and organ pipes can be split likewise, based on the sound source mechanism involved, into “flues” and “reeds,” respectively. Organ pipes are used in this section to introduce the acoustic principles of wind instruments with and without reeds as the sound source. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1133

Categorization

• XREF: connects to: Flue pipes sound through a self-oscillating vortex called the air reed. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1141