Helmholtz air resonance extends violin support below its lowest body mode

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

Categorization

• XREF: Connects to ported loudspeaker design from section 13.6 referenced in the text; also the general principle that a Helmholtz resonator (air mass + volume spring) extends low-frequency response. — connects to: Changing internal gas density shifts the violin’s Helmholtz resonance frequency.; The violin body is a Helmholtz resonator responsible for its tone.; Air and top-plate resonances dominate violin low-frequency response — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1116 (+2 more)
• DEFINE: Helmholtz resonance is explained here as the mechanism by which f-hole air acts as a mass and cavity air as a spring.
• corroborated: 2 independent passages support this claim — Eric J. Heller, Why You Hear What You Hear- An…, 1796

Broader Connections

• Helmholtz resonance shapes violin bodies, speaker designs, and car cabin noise #corroborates (1.00) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 160
• Air and top-plate resonances dominate violin low-frequency response #expands (0.95) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1116
• Violin body tone is dominated by just two low-frequency resonances #qualifies (0.80)