The voice drives the tract noninteractively whereas trumpet lips receive feedback

Evidence

The vocal frequency and waveform are largely determined by the muscles of the larynx controlling the spacing and especially the tension in the folds. In other words, the vocal fold system is a high-impedance drive that does not vibrate appreciably differently because of its coupling to the vocal tract. In contrast, the lips of a trumpet player are subject to nonlinear feedback from the resonances of the trumpet tube, leading to interactive cooperation. — Eric J. Heller, Why You Hear What You Hear- An…, 1663

Categorization

Category: Causal Relationships

Broader Connections

  • Speech excitation is not coupled to tract resonances, unlike most instruments #corroborates (0.95) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 665
  • Trumpet valves combine with lip synchronization to expand pitch range #expands (0.80) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 675