A closed cylindrical resonator filters sound to odd harmonics

Evidence

A Helmholtz resonator is a cavity-type resonator, so constructed that it will vibrate only at a particular frequency. It was developed by the German physicist Hermann Helmholtz in the nineteenth century to analyze the harmonic components of complex sounds. — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 920 (#expands, via linked claim)

Categorization

• XREF: connects to: Helmholtz resonators serve as transducers, amplifiers, and sound controllers.; A closed narrow-end cone acts like a double-open cylinder giving all harmonics — Eric J. Heller, Why You Hear What You Hear- An…, 1472; Trapped compressible air and moving air form a mass-spring acoustic resonator (+9 more)

Broader Connections

• A resonant cavity can isolate a single frequency from complex sound. #expands (0.85) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 920
• An open-open pipe’s modes form a complete harmonic series at integer multiples #qualifies (0.80)
• Narrow-band filters smear signal onset despite resolving harmonics #complicates (0.75)