In acoustics, particle acceleration is the acceleration (rate of change in speed and direction) of particles in a sound transmission medium. When sound passes through a medium it causes particle displacement and as such causes changes in their acceleration.
The acceleration of the air particles of a plane sound wave is given by:
Symbol Units Meaning a m/s2 particle acceleration v m/s particle velocity δ m, meters particle displacement ω = 2πf radians/s angular frequency f Hz, hertz frequency p Pa, pascals sound pressure Z N·s/m3 acoustic impedance J W/m2 sound intensity E W·s/m3 sound energy density Pac W, watts sound power or acoustic power A m2 area
See also Sound Sound particle Particle displacement Particle velocity
References
External links Relationships of acoustic quantities associated with a plane progressive acoustic sound wave - pdf