Sound & Acoustics

Acoustics is the study of mechanical waves in gases, liquids and solids, extending to all forms of sound. Wolfram|Alpha includes many computations and equations for determining how sound is affected by motion, humidity and distance as well as the listener's perceived experience.

Doppler Shift

Calculate how Doppler shift changes the frequency of sound waves.

compute a Doppler shift

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Subjective Acoustics

Compute the subjective loudness of a sound based on frequency and source loudness.

compute perceived loudness

compute source loudness

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Sound Absorption

Explore acoustic sound barriers and absorption properties of water and air.

find the absorption coefficient of seawater

determine the effect of distance on sound pressure levels in moist air

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Helmholtz Resonator Frequency

Determine the resonant frequencies of Helmholtz resonators based on their physical dimensions.

determine resonant frequency of a cavity

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Threshold Hearing Distance in Moist Air

Calculate the hearing threshold for a sound based on ambient conditions.

find the maximum distance for hearing a sound

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