phonetician
noun/ˌfəʊnəˈtɪʃn/, /ˌfɒnəˈtɪʃn/
/ˌfəʊnəˈtɪʃn/, /ˌfɑːnəˈtɪʃn/
- a person who studies speech sounds and how they are produced
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phonetician
Definition of phonetician noun from the Oxford Advanced Learner's Dictionary