Striking a membrane at a nodal line silences that mode entirely
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 (
#expands, via linked claim)
Categorization
- XREF: connects to: A register hole suppresses unwanted modes by sitting at their pressure antinode — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1191; Constricting a tube at a pressure antinode leaves the frequency unchanged; Drum membranes always have one clamped-edge circular node
Related
- A register hole suppresses unwanted modes by sitting at their pressure antinode (similarity 0.89)
- Register holes force a jump to a higher mode by removing harmonic support. (similarity 0.89)
- Register holes exploit mode geometry to suppress one mode while sparing others. (similarity 0.88)
- A register hole kills one resonance while sparing another. (similarity 0.84)
- Register holes suppress unwanted modes by exploiting pressure nodes and maxima (similarity 0.81)
- Register holes force overblowing by stripping the fundamental of its harmonic support (similarity 0.79)
Broader Connections
- A register hole suppresses unwanted modes by sitting at their pressure antinode
#expands(0.85) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1191 - Constricting a tube at a pressure antinode leaves the frequency unchanged
#expands(0.80)