The sound is the effect in our auditory system produced by the vibrations of molecules in an average transmitter.

It is essential that the propagation means exist, that is that this one is a solid, gas or liquid, since in the emptiness, the propagation of the sound waves would be impossible.

These waves, then, when arriving at our brain, this one the decodifica in form of reconocibles sounds.

It is important to know to the different reactions and the behavior from the sound according to the material in which one propagates or it bounces, with the object of considering at the time of isolating, or to modify the acoustic conditions of an enclosure in which we are going to carry out a recording.

This material will affect the quality of sound, in addition sure to other environmental or space factors like for example the dimensions of the place at issue.

Greater size and with less absorventes materials, we will possibly observe greater times of reverberation and a more shining sound. (the ilustrativo example is a church, in which the aforesaid thing is verified)

The factors are innumerable that can affect to the sound in a certain enclosure, in fact the places designed with the object of lodging a concert hall, carefully are prepared to produce a clear and pleasant sound to the attending public.

Also in a recording studio one is to obtain “a flat” sound that is will see in which to the original sound one talks about, to apply from a clean taking, the acoustic modifications that the technician creates advisable to simulate different sonorous scopes or different effects.