1º_ Relative to the voice. 2º_ By the previous one, it is said of who has 'voice' as "right to opine and in some cases vote" in meetings, assemblies, decision groups. 3º_ It is each sound that is pronounced by the mouth without the use of the lips or tongue. In Spanish there are five that are represented as: a , e , i , o , u; and combine with consonants to form spoken words.