Final answer:
The acoustic variables that are considered in the question include frequency, particle motion, and pressure.
Step-by-step explanation:
The acoustic variables that are considered in the question include frequency, particle motion, and pressure.
Frequency refers to the number of cycles or vibrations of a sound wave that occur in a second. It is measured in hertz (Hz).
Particle motion refers to the movement of particles in the medium as a sound wave passes through. The particles oscillate back and forth in the direction of wave propagation.
Pressure is the force exerted by a sound wave on the region it passes through. It is the result of the compressions and rarefactions in the medium.