Loudspeakers work by converting electrical energy into kinetic energy. This vibrates the cone which creates the sound waves. Sound waves can reflect off surfaces. We hear reflected sound as an echo.

Sound is a vibration that travels through air as a wave. These waves are created when an object moves back and forth, compressing and decompressing air molecules. The frequency of these vibrations ...

Collaboration between institutions in the Netherlands, Germany, Switzerland, and Austria, researchers have created a new metamaterial that has significance in acoustics. The work is the world’s ...

Green noise is often considered the most harmonic and natural form of white ... The calming sounds of rustling leaves, ...