Did you know?
Contrary to popular belief, egg boxes will only make a marginal improvement to some aspects of a room's acoustics by breaking up reflections from hard surfaces, but they are virtually useless for soundproofing.

Sound is a vibration or wave of air molecules caused by the motion of an object

Sound is a vibration or wave of air molecules caused by the motion of an object
 airborne (talking, laughing, music etc)
 impact (footfall, shifting chairs, music base vibrations etc

Effective soundproofing is achieved when the following (or a combination of the following) is put in place:
 breaking contact with an offending surface
 creating a void
 adding mass/density

 Sound waves can travel through different mediums, including solids, liquids and air

Sound waves travel in a given direction until an outside force or object gets in the way of its motion and reflects it

In dry air, sound travels at 331.6 metres per seconds

The strength of a sound is reflected by the sound level, expressed in the unit Decibel (dB). An increase in the sound level of 1 dB is just barely discernible. An increase in the sound level of 10 dB anywhere within the area of audible sound is experienced by the human ear as a doubling of the sound volume. Inversely, a decrease of 10 dB is experienced as if the sound level were cut in half.