Decibel Scale (dB SPL)

Logarithmic measure of sound pressure level referenced to the 20 micropascal threshold of human hearing.

Core Principles & Analysis

• Each 10 dB increase corresponds to a tenfold rise in sound intensity.
• Normal conversation measures about 60 dB, while a full orchestra can exceed 100 dB at its peak.
• Prolonged exposure above 85 dB can cause permanent noise-induced hearing loss.