The human ear can theoretically capture a wide range of frequencies (20-16, 000 Hz) and discern an infinite amount of rhythms. However, to the passage of the years, the ear is accustomed to efficiently process the frequencies and rhythms used only in the native language. If the ear is not picking up the sounds, the voice cannot play them. In addition each language has a time of specific self-control (the time required by the ear to control the vocal emission).This is why some languages are faster than others, for example: a Frenchman who speaks British English should listen and talk even more quickly than in their language, at the same time emitting rare in its native language phonemes. Speaking another language is used in another way the small muscles in the ear and nerve complex circuits with which they are associated.
At each step the process of assimilating other language, is ear which controls the voice, which has an influence on the thinking and language structures. By this communication involves using all the nervous system. So we could say that we are predestined genetically speaking to speak a certain language; our parents and in general everyone who lives around us, so that the mere fact of attending a school to study does not guarantee that you can communicate in English, you will learn some grammar some words but you will need an ear training to capture words in different sound frequency, longer than the Spanish between 125 and 500 Hz while than the English between 2000 and the 12000Hz are completely opposite. -Now I understand the because if I could speak and understand me with my roommates when studying at schools of English but when I watch a movie or listen to a song the things already were not the same.