Blowing across a bottle mouth produces a Helmholtz resonance
Evidence
The principle of Helmholtz resonance takes different shapes. The body of the violin or the guitar is a good example where the air hole(s) and the body result in the lowest resonance frequency of the instrument. A bass-reflex type of loudspeaker enclosure adds a desired boost to the low-frequency response of the loudspeaker (see Section 4.1.1). The interior of a car cabin, when a window is slightly opened while driving fast, may strongly amplify turbulent noise at low or very low (infrasound) frequencies. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 160 (
#expands, via linked claim)
Categorization
- XREF: connects to: Matched Helmholtz resonator sets enabled early Fourier analysis of sound — Eric J. Heller, Why You Hear What You Hear- An…, 1200; Changing internal gas density shifts the violin’s Helmholtz resonance frequency.; The violin body is a Helmholtz resonator responsible for its tone. (+11 more)
Related
- An open car window creates a living Helmholtz resonator with strong low-frequency pressure fluctuations (similarity 0.91)
- The violin body is a Helmholtz resonator responsible for its tone. (similarity 0.90)
- Helmholtz resonance shapes violin bodies, speaker designs, and car cabin noise (similarity 0.89)
- Helmholtz resonators serve as transducers, amplifiers, and sound controllers. (similarity 0.88)
- A vocal tract constriction at the mouth forms a Helmholtz resonator (similarity 0.88)
- Helmholtz resonance is the trapped-air cavity resonance exploited in perforated-panel absorbers (similarity 0.87)
- Changing internal gas density shifts the violin’s Helmholtz resonance frequency. (similarity 0.86)
- Helmholtz air resonance extends violin support below its lowest body mode (similarity 0.85)
- The Helmholtz resonator models confined air as a spring with an air-mass plug (similarity 0.85)
- Instrument bodies act as coupled resonators that shape and radiate sound (similarity 0.84)
- Trapped compressible air and moving air form a mass-spring acoustic resonator (similarity 0.84)
- Trapped air in a cavity oscillates like a spring-and-mass system, producing Helmholtz resonance (similarity 0.84)
- Constricting a tube’s open end transforms it into a Helmholtz resonator. (similarity 0.82)
- Air in bottle necks behaves as a damped harmonic oscillator, not a molecule-by-molecule system (similarity 0.81)
- A resonant cavity can isolate a single frequency from complex sound. (similarity 0.81)
Broader Connections
- Helmholtz resonance shapes violin bodies, speaker designs, and car cabin noise
#expands(0.90) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 160 - Helmholtz resonance is the trapped-air cavity resonance exploited in perforated-panel absorbers
#expands(0.90) - Resonator pitch scales with gas speed, volume, neck geometry
#expands(0.85) - An open mouth amplifies faint sounds by serving as a resonant chamber
#exemplifies(0.80) — Gordon Hempton, John Grossmann, One Square Inch of Silence- One Man’s…, 191 - A resonant cavity can isolate a single frequency from complex sound.
#expands(0.75) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 920