Changing internal gas density shifts the violin’s Helmholtz resonance frequency.

Evidence

The Helmholtz air resonance rescues the violin from poor low-frequency response. The lowest body mode vibration is around 450 Hz; the f-holes bolster that with an approximately 270 Hz center frequency broad Helmholtz air resonance. The G3 string vibration has a fundamental at about 196 Hz. Owing to the Helmholtz mode, the lowest frequency partials will have support. — Eric J. Heller, Why You Hear What You Hear- An…, 1796 (#expands, via linked claim)

Categorization

• XREF: connects to: Air and top-plate resonances dominate violin low-frequency response — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1116; Helmholtz air resonance extends violin support below its lowest body mode — Eric J. Heller, Why You Hear What You Hear- An…, 1796; Helmholtz resonance shapes violin bodies, speaker designs, and car cabin noise — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 160 (+4 more)

Related

• The violin body is a Helmholtz resonator responsible for its tone. (similarity 0.94)
• Helmholtz air resonance extends violin support below its lowest body mode (similarity 0.93)
• Violin body tone is dominated by just two low-frequency resonances (similarity 0.91)
• Air and top-plate resonances dominate violin low-frequency response (similarity 0.90)
• Helmholtz resonance shapes violin bodies, speaker designs, and car cabin noise (similarity 0.89)
• The gas filling a resonant cavity shifts its Helmholtz frequency. (similarity 0.87)
• Blowing across a bottle mouth produces a Helmholtz resonance (similarity 0.86)
• Blocking violin f-holes destroys the Helmholtz resonance and alters tone (similarity 0.84)
• Instrument bodies act as coupled resonators that shape and radiate sound (similarity 0.82)
• Body-volume changes drive the Helmholtz air mode in stringed instruments (similarity 0.81)
• Helmholtz resonators serve as transducers, amplifiers, and sound controllers. (similarity 0.81)
• Stringed instruments radiate low frequencies omnidirectionally but high frequencies directionally (similarity 0.81)
• Phase-shifted air motion through f-holes reinforces sound radiation at high frequencies (similarity 0.80)
• Air and tap resonances align with open-string fundamentals that differ across instrument sizes (similarity 0.80)
• An open car window creates a living Helmholtz resonator with strong low-frequency pressure fluctuations (similarity 0.80)

Broader Connections

• The violin body is a Helmholtz resonator responsible for its tone. #expands (0.90)
• Helmholtz air resonance extends violin support below its lowest body mode #expands (0.85) — Eric J. Heller, Why You Hear What You Hear- An…, 1796
• Blowing across a bottle mouth produces a Helmholtz resonance #exemplifies (0.85)
• Helmholtz resonance shapes violin bodies, speaker designs, and car cabin noise #complicates (0.80) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 160
• Air and top-plate resonances dominate violin low-frequency response #expands (0.78) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1116
• Violin body tone is dominated by just two low-frequency resonances #expands (0.75)