Harder blowing grows higher harmonics and brightens or rasps wind-instrument tone.

Evidence

4. When partials higher than the sixth or seventh are very distinct, the quality of the tone is cutting or rough… . The most important musical tones of this description are those of the bowed instruments and of most reed pipes, oboe, bassoon, harmonium and the human voice. The rough, braying tones of brass instruments are extremely penetrating, and hence are better adapted to give the impression of great power than similar tones of a softer quality. — David Howard, Jamie Angus, coustics and Psychoacoustics, 1520 (#expands, via linked claim)

Categorization

• XREF: connects to: Distinct high partials make tones sound cutting or rough and powerful — David Howard, Jamie Angus, coustics and Psychoacoustics, 1520; Raising a tone’s level lowers low-frequency pitch but raises high-frequency pitch; Bright timbres stem from strong energy in harmonics above the seventh (+1 more)

Broader Connections

• Distinct high partials make tones sound cutting or rough and powerful #expands (0.85) — David Howard, Jamie Angus, coustics and Psychoacoustics, 1520
• Bright timbres stem from strong energy in harmonics above the seventh #expands (0.80)
• Raising a tone’s level lowers low-frequency pitch but raises high-frequency pitch #complicates (0.75)
• Horn bells boost lower frequencies where wall friction dominates resonance enhancement #contradicts (0.70)