Phonetics has developed into a macro research discipline involving many interdisciplines,with the core research area being called'linguistic phonetics'which is a study of language-related phonetics through experi-ments.In terms of epistemology,the development of phonetics can be divided into four phases.Born in the 1880s,modern phonetics aimed to serve linguistics,specifically in its function in teaching and describing languages.It followed two approaches:field investigations and phonetic experiments.Phonetic data thus gathered were consid-ered the source of reliable knowledge.Experimental phonetics appeared in the 1940s.Marking the beginning of the second phase,it gave birth to a dozen or so inter-disciplines outside linguistics in the decades that followed.Given that such disciplines were largely marginalized in linguistics,the kind of phonetic data contributed were consid-ered,from the perspective of epistemology,useless or irrelevant in phonology.With the arrival of the third phase since the 1990s,phonetic data were re-emphasized in Linguistic Phonetics and Experimental Phonology.Computer phonetic analysis applications came to maturity during the first decade of the new century,leading to the fact that many researchers became reliant on phonetic data.In the preceding couple of decades,epistemology experienced another turn,making phonetic data received as an indispensable assistance in formalizing phonological categories and concepts.Phonetics should be of linguistics,by linguistics and for linguistics.During the past decades,phonet-ics has developed quickly in the West.The fundamental phonetic concepts,however,were established on and for Segment-Prominent European languages yet do not work well when they are introduced into the study of the Pho-nation-Active languages with tone and/or non-modal voices as those spoken in East/South Asia and West/Central Africa.It is,therefore,a new task for phoneticians and phonologists to develop a more comprehensive framework to accommodate this kind of languages.In recent years,a large scaled investigation over the vast areas of China has revealed a great deal of new phonetic phenomena,most of which are related to phonation and tone.Based on these findings,a new phonetic typology has been set up and a new universal phonetic theory has been proposed,which includes a system of laryngeal activities and a multi-register and four-level tonal model.With the help of this new theory,studies of the phonological evolution have made substantial progress in recent years.
modern phoneticsexperimental phoneticslinguistic phoneticspan-chronic phonologyphonation typephonological typologyevolutionary phonology