The attenuation of sound in air is affected by the relative humidity. Dry air absorbs far more acoustical energy than does moist air. This is because moist air is less dense than dry air (water vapor weighs less than air).
The attenuation of sound in air is affected by the relative humidity. Dry air absorbs far more acoustical energy than does moist air. This is because moist air is less dense than dry air (water vapor weighs less than air).