Add to ORKGPhonetics as a linguistic science has its own specific peculiarities as such having its object, methods of investigation, types, aspects and connections with linguistic and none linguistic sciences such as lexicology, stylistics and grammar. The main unit of phonetics is speech sounds, namely phonemes which are divided into two classes; vowels and consonants. Usually the distinction between a vowel and consonant is regarded to be not phonetic, but phonemic. From phonetic point of view the distinction between a vowel and a consonant is based on their articulatory-acoustic characteristics, i.e. a vowel is produced as a pure musical tone without any obstruction of the air-stream in the mouth cavity while in the production of a consonant there ...