Air reed pitch is set entirely by resonator length and pipe openness.
Evidence
When the action of the resonator on the air reed sound source in a flue organ pipe is considered (see Figure 4.14), it is found that the f0 of air reed vibration is entirely controlled by: (a) the length of the resonator, and (b) whether the pipe is open or stopped. — David Howard, Jamie Angus, coustics and Psychoacoustics, 1184
Categorization
- XREF: Builds on Chapter 1 standing waves section (1.5.7) that established node and antinode reflection behavior — reinforces that earlier material as load-bearing here. — connects to: The air reed’s fundamental frequency is set solely by resonator length and end condition — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1154; Air reed frequency rises with airflow velocity and falls with cut-up length; Resonator length and end condition alone determine flue pipe pitch
Broader Connections
- The air reed’s fundamental frequency is set solely by resonator length and end condition
#corroborates(0.98) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1154 - Air reed frequency rises with airflow velocity and falls with cut-up length
#contradicts(0.85) - Resonator length and end condition alone determine flue pipe pitch
#exemplifies(0.75)