Open and stopped organ pipes correspond to open-open and open-closed acoustic tubes.
Evidence
There are two basic types of organ flue pipe: those that are open and those that are stopped at the end farthest from the flue itself (see Figure 4.12). The flue end of the pipe is acoustically equivalent to an open end. Thus the open flue pipe is acoustically open at both ends, and the stopped flue pipe is acoustically open at one end and closed at the other. — David Howard, Jamie Angus, coustics and Psychoacoustics, 1181
Categorization
- DEFINE: Clarifies how organ flue pipes map onto the fundamental open-open vs open-closed tube acoustics.
- XREF: connects to: Organ flue pipes divide into open-open and open-closed acoustic types — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1152; Open-open pipes resonate at the same half-wavelength frequencies as closed pipes. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 404; Stopped organ pipes sound the same pitch at half the length — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1185 (+6 more)
Broader Connections
- Organ flue pipes divide into open-open and open-closed acoustic types
#corroborates(0.95) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1152 - Stopped organ pipes sound the same pitch at half the length
#expands(0.85) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1185 - Woodwind flue instruments act acoustically as pipes open at both ends
#expands(0.80) — David Howard, Jamie Angus, coustics and Psychoacoustics, 1214 - Open-open and open-closed tubes produce different harmonic series
#expands(0.80) - Open-open tubes support standing waves with the same half-wavelength rule
#expands(0.80) - Open-open pipes resonate at the same half-wavelength frequencies as closed pipes.
#expands(0.75) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 404 - An open pipe end inverts a sound pulse’s sign via a reflected rarefaction
#expands(0.75) — Eric J. Heller, Why You Hear What You Hear- An…, 112 - The human vocal tract behaves acoustically as a stopped pipe about 17.5 cm long.
#exemplifies(0.70)