Lack of intensity-measuring instruments shaped early psychoacoustic research priorities

Evidence

Intensity, while it has concrete bearing on what sound will do to the hearing apparatus, is not the same metric as perceived loudness, which doubles with every ten-decibel increase, so that going from 40 to 50 decibels equals a rise of 100 percent. — George Michelsen Foy, Zero Decibels, 53 (#expands, via linked claim)

Categorization

• XREF: connects to: Loudness growth with intensity requires experimental quantification, not intuition; Perceived loudness and physical sound intensity follow different, non-intuitive mathematical scales — George Michelsen Foy, Zero Decibels: The Quest for Absolute…, 53

Broader Connections

• Perceived loudness and physical sound intensity follow different, non-intuitive mathematical scales #expands (0.85) — George Michelsen Foy, Zero Decibels, 53
• Loudness growth with intensity requires experimental quantification, not intuition #corroborates (0.80)