Revisions to the extIPA chart

Abstract

This paper describes changes to the extIPA (Extensions to the IPA) symbol set, the motivation for these changes, and areas where future changes by the IPA might be helpful to clinical transcribers. The extIPA symbol set was introduced some twenty-five years ago. Since that time, some minor changes have been introduced to the extIPA chart but no major rearrangement has been attempted. The 2010 Oslo meeting of ICPLA (International Clinical Phonetics and Linguistics Association) started a revision of the extIPA chart, and this process was recently completed. A revised extIPA chart was approved at the 2016 ICPLA meeting. The revision involved the addition, modification and removal of categories and symbols. All changes derive from the need to denote sounds encountered in disordered speech that were not covered by the original chart.