Reflected sound waves pull a lip-reed player’s notes into resonance grooves, resisting off-resonance tones.

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 (#corroborates, via linked claim)

Categorization

• XREF: connects to: Note bending works when reed and vocal tract resonances reinforce each other; A resonant cavity can isolate a single frequency from complex sound. — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 920; Notes lacking reinforced upper harmonics play wobbly and degraded (+1 more)

Broader Connections

• Note bending works when reed and vocal tract resonances reinforce each other #expands (0.78)
• A resonant cavity can isolate a single frequency from complex sound. #corroborates (0.72) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 920
• Notes lacking reinforced upper harmonics play wobbly and degraded #corroborates (0.72)