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Phonetics (from the Greek word φωνή, phone meaning 'sound or voice') is the study of the sounds of human speech. It is concerned with the actual properties of speech sounds (phones), and their production, audition and perception, while phonology, which emerged from it, studies 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. Discussions of meaning (semantics) do not enter at this level of linguistic analysis.

Phonetics has three main branches:

• articulatory phonetics, concerned with the positions and movements of the lips, tongue, vocal tract and folds and other speech organs in producing speech;
• acoustic phonetics, concerned with the properties of the sound waves and how they are received by the inner ear; and
• auditory phonetics, concerned with speech perception, principally how the brain forms perceptual representations of the input it receives.

There are over a hundred different phones recognized as distinctive by the International Phonetic Association (IPA) and transcribed in their International Phonetic Alphabet.

Phonetics was studied as early as 2,500 years ago in ancient India, with Pāṇini's account of the place and manner of articulation of consonants in his 5th century BC treatise on Sanskrit. The major Indic alphabets today order their consonants according to Pāṇini's classification.

• List of phonetics topics
• Speech processing
• Acoustics
• Biometric word list
• Phonetics departments at universities
• X-SAMPA
• NATO Phonetic Alphabet

• The International Society of Phonetic Sciences (ISPhS)
• A little encyclopedia of phonetics, Peter Roach, Professor of Phonetics, University of Reading, UK. (pdf)
• The sounds and sound patterns of language U Penn
• UCLA lab data
• UCLA Phonetics Lab Archive
• EGG and Voice Quality (electroglottography, phonation, etc.)
• single sound per symbol phonetic writing system(simple phonetic symbols for English language)
• IPA handbook
• IPA-SAM Phonetic Fonts
• Speech Analysis Tutorial
• Lecture materials in German on phonetics & phonology, university of Erfurt
• Real-time MRI video of the articulation of speech sounds, from the USC Speech Articulation and kNowledge (SPAN) Group
• Beginner's course in phonetics, with some exercises
• Praat - Phonetic analysis software

• Abercrombie, D. (1967). Elements of General Phonetics. Edinburgh University Press: Edinburgh.
• Catford, J. C. (1977). Fundamental problems in phonetics. Bloomington, IN: Indiana University Press. ISBN 0-253-32520-X.
• Clark, John; & Yallop, Colin. (1995). An introduction to phonetics and phonology (2nd ed.). Oxford: Blackwell. ISBN 0-631-19452-5.
• Gussenhoven, C & Broeders, A. (1997). English pronunciation for student teachers. Wolters-Noordhoff BV Groningen, the Netherlands. ISBN 90 01 16703 9
• Hardcastle, William J.; & Laver, John (Eds.). (1997). The handbook of phonetic sciences. Oxford: Blackwell Publishers. ISBN 0-631-18848-7.
• Ladefoged, Peter. (1982). A course in phonetics (2nd ed.). London: Harcourt Brace Jovanovich.
• Ladefoged, Peter. (2003). Phonetic data analysis: An introduction to fieldwork and instrumental techniques. Malden, MA: Blackwell Publishing. ISBN 0-631-23269-9 (hbk); ISBN 0-631-23270-2 (pbk).
• Ladefoged, Peter; & Maddieson, Ian. (1996). The sounds of the world's languages. Oxford: Blackwell Publishers. ISBN 0-631-19814-8 (hbk); ISBN 0-631-19815-6 (pbk).
• Maddieson, Ian. (1984). Patterns of sounds. Cambridge studies in speech science and communication. Cambridge: Cambridge University Press.
• Laver, J. (1994).Principles of Phonetics. Cambridge: Cambridge University Press.
• Pike, Kenneth L. (1943). Phonetics: A critical analysis of phonetic theory and a technic for the practical description of sounds. Ann Arbor: University of Michigan Press.
• Pisoni, David B.; & Remez, Robert E. (Eds.). (2004). The handbook of speech perception. Oxford: Blackwell. ISBN 0-631-22927-2.
• Rogers, Henry. (2000). The Sounds of Language: An Introduction to Phonetics. Harlow, Essex: Pearson. ISBN 0-582-38182-7.
• Stevens, Kenneth N. (1998). Acoustic phonetics. Current studies in linguistics (No. 30). Cambridge, MA: MIT Press. ISBN 0-262-19404-X.