Phonetics examines the transmission of linguistic messages from speakers to listeners, the phonetic, prosodic and acoustic characteristics of speech, as well as the relationship between language and speech. Speech can be examined as a cognitive-motoric performance, an acoustic state and a phenomenon within the perception of the recipient. All these are characteristic of research in phonetics. Often, the research also encompasses various background factors that invariably affect the nature and success of the speech act, such as the formality of the occasion or the language and dialect backgrounds of the speakers. The research focuses on normal speech.