Which decibel level corresponds to the average human conversation?

Which decibel level corresponds to the average human conversation?

• A. 0 dB
• B. 65 dB
• C. 120 dB
• D. 140 dB

Answer: (B)

Sound levels are measured in decibels (dB), a logarithmic scale that compares a sound to a reference level. Normal conversation sits around 60–65 dB, typically about 65 dB at a short distance (about a meter). This level is comfortably above the quiet threshold (0 dB) but far below levels that cause pain or damage. For context, 120 dB is around the threshold of pain (loud concerts, sirens), and 140 dB is extremely loud and can cause immediate injury (jet takeoff from close range). So the everyday average conversation is best represented by roughly 65 dB.

Sound levels are measured in decibels (dB), a logarithmic scale that compares a sound to a reference level. Normal conversation sits around 60–65 dB, typically about 65 dB at a short distance (about a meter). This level is comfortably above the quiet threshold (0 dB) but far below levels that cause pain or damage. For context, 120 dB is around the threshold of pain (loud concerts, sirens), and 140 dB is extremely loud and can cause immediate injury (jet takeoff from close range). So the everyday average conversation is best represented by roughly 65 dB.