How To Do Sound Wave Equations. Sound lies at the very center of speech communication. Equation (1) gives the mass and the two equations above give f and a, so f = ma becomes.

First they figure out what kind of noise is reaching your ears. \begin{equation} \label{eq:i:47:21} c_s^2 = \biggl(\ddt{p}{\rho}\biggr)_0. Like any wave, a sound wave has a speed that is mathematically related to the frequency and the wavelength of the wave.