Doubling loudness requires 10 dB, not 3 dB or 6 dB

Evidence

3 Loudness doubling: A dou bling in loudn ess requires, on average, a 10 dB increase in sound pr essure level as indicat ed in Example 2.4. This example uses an anechoic recording s et to the following l evels: 0 dB, 3 dB, 6 dB and 10 dB to illustrate the effect of dou bling int ensity (3 dB), dou bling pr essure (6 dB) and a verage dou bling in loudn ess (10 dB). — David Howard, Jamie Angus, coustics and Psychoacoustics, 2954

Categorization

• DEFINE: Distinguishes doubling intensity (+3 dB) from doubling pressure (+6 dB) from doubling loudness (+10 dB) — a clean clarification of a commonly conflated set.
• CANDY: The simple fact that a 10 dB rise is what it takes to hear a doubling is a neat conversational tidbit for anyone interested in sound.