Spoken words vary phonetically along a number of dimensions, such as duration, pitch, and vowel quality. Much of this variation is associated with social factors like the dialect, age, or gender of the speaker -- a type of variation termed 'socio-indexical'. Traditional theories of speech perception have seen this socio-indexical variation as a…

Twenty-four English speakers from various regions of India were tested for the intelligibility of their speech. Recordings of speech in a variety of contexts were evaluated by listeners from the United Kingdom, the United States, Nigeria, and Germany. On the basis of the resulting intelligibility scores, factors which tend to hinder…