# Acoustics

Acoustics is the branch of physics that deals with the study of all mechanical waves in gases, liquids, and solids including topics such as vibration, sound, ultrasound, and infrasound.

## Sound pressure

Since audible sound consists of pressure waves, one of the…

## Noise

In Metrology, noise is defined as the set of random…

## Soundwave energy

Soundwave energy is kinetic, and potential energy through a transmission medium…

## Acoustic wave

Acoustic waves (also known as sound waves) are a type…

## Ultrasound

Ultrasounds are mechanical sound waves. Unlike acoustic phenomena, the frequencies…

## Infrasound

Infrasound, sometimes referred to as low-frequency sound, lower in frequency…

## Absorption

Absorption may have different definitions depending on the field of…