The Journal of the Acoustical Society of America · 1972 · 96 citations · 0 references
Natural SciencesPhysicsAcousticsAtmospheric ScienceAtmospheric ThermodynamicsAbsorption SpectroscopyAtmospheric AbsorptionEnvironmental AcousticsPhysical AcousticsSound AbsorptionSound TransmissionAccuracyAcoustic Absorption ModelingAtmospheric Absorption CoefficientsFrequency-dependent AbsorptionSound Absorption CoefficientSound Absorption MeasurementVibration Behavior
A set of analytical expressions has been developed which will predict the absorption of sound in air at 20°C. The results agree within 3% of previous work in the frequency range of 100 Hz 1 MHz for all humidities. Below 100 Hz accuracy cannot be judged because of lack of knowledge about the vibration-vibration energy transfer between CO2 and O2.