Britannica
Sources used in this answer
How can the speed of a sound wave be calculated from its wavelength and frequency?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
acoustics
Artificial omni-directional sound source in an anechoic acoustic chamber.
The speed of a sound wave, also referred to as wave velocity, can be calculated by finding the product of its wavelength and its frequency.
Mathematically, this relationship is expressed as:
In this equation:
* represents the wave velocity (speed).
* (lambda) represents the wavelength, which is the distance between successive compressions or rarefactions of the wave.
* represents the frequency, which is the number of vibrations per second, measured in hertz.
While the speed of sound is determined by the properties of the medium through which it travels—such as its density and elasticity—this fundamental relationship between velocity, wavelength, and frequency holds true for all wave motion.123