Register holes force a jump to a higher mode by removing harmonic support.

Evidence

Overblowing is supported in instruments such as the recorder by opening a small “register” or “vent” hole, which is positioned such that it is at the pressure antinode for unwanted modes, and these modes will be suppressed. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1191 (#contradicts, via linked claim)

Categorization

• XREF: connects to: Register holes exploit mode geometry to suppress one mode while sparing others.; A register hole suppresses unwanted modes by sitting at their pressure antinode — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1191; A register hole kills one resonance while sparing another. (+2 more)

Related

• Register holes exploit mode geometry to suppress one mode while sparing others. (similarity 0.97)
• A register hole suppresses unwanted modes by sitting at their pressure antinode (similarity 0.92)
• A register hole kills one resonance while sparing another. (similarity 0.90)
• Striking a membrane at a nodal line silences that mode entirely (similarity 0.89)
• Register holes force overblowing by stripping the fundamental of its harmonic support (similarity 0.89)
• Register holes suppress unwanted modes by exploiting pressure nodes and maxima (similarity 0.85)
• A register hole suppresses odd harmonics while leaving even ones intact (similarity 0.82)
• Overblowing a pipe jumps its pitch to the next resonator-supported harmonic (similarity 0.80)

Broader Connections

• Register holes exploit mode geometry to suppress one mode while sparing others. #qualifies (0.90)
• A register hole suppresses unwanted modes by sitting at their pressure antinode #contradicts (0.85) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1191
• A register hole kills one resonance while sparing another. #corroborates (0.85)
• Overblowing a pipe jumps its pitch to the next resonator-supported harmonic #exemplifies (0.80) — David Howard, Jamie Angus, coustics and Psychoacoustics, 1211
• Constricting a tube at a pressure node lowers the modal frequency #expands (0.75)