Airplane engine loudness fluctuations stem from scintillation, not an unsteady pilot
Evidence
Turbulent airflow is the mechanism responsible for the nonpitched sounds in speech such as the “sh” in shoe and the “ss” in sea, for which waveforms and spectra are shown in Figure 3.9. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1140 (
#expands, via linked claim)
Categorization
- XREF: connects to: Low-frequency noise fluctuates audibly while high-frequency noise is steady; Echo interference creates sinusoidal power fluctuations that average to zero; Turbulent airflow produces unvoiced fricative speech sounds — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1140
Related
- Turbulent airflow produces unvoiced fricative speech sounds (similarity 0.92)
- Jet instability makes some noise from fast air streams physically unavoidable (similarity 0.78)
Broader Connections
- Low-frequency noise fluctuates audibly while high-frequency noise is steady
#corroborates(0.82) - Echo interference creates sinusoidal power fluctuations that average to zero
#expands(0.75) - Turbulent airflow produces unvoiced fricative speech sounds
#expands(0.72) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1140