Question

Expansion of a4 + b4

Answer 1

Speech is the vocalized form of communication based upon the syntactic combination of lexicals and names that are drawn from very large (usually about 1,000 different words)[citation needed] vocabularies. Each spoken word is created out of the phonetic combination of a limited set of vowel and consonant speech sound units (phonemes). These vocabularies, the syntax which structures them, and their sets of speech sound units differ, creating many thousands of different, and mutually unintelligible, human languages. Most human speakers are able to communicate in two or more of them,[1] hence being polyglots. The vocal abilities that enable humans to produce speech also enable them to sing.