From wikipedia:
"Phonetics (from the Greek word φωνή, phone meaning 'sound, voice') is the study of sounds and the human voice. It is concerned with the actual properties of speech sounds (phones) as well as those of non-speech sounds, and their production, audition and perception, as opposed to phonology, which is the study of sound systems and abstract sound units (such as phonemes and distinctive features). Phonetics deals with the sounds themselves rather than the contexts in which they are used in languages."