Identifying regional varieties by pitch information: A comparison of two approaches Jörg Petersa, Peter Gillesb, Peter Auerb, and Margret Seltingc aUniversity of Nijmegen, The Netherlands bUniversity of Freiburg, Germany cUniversity of Potsdam, Germany E-mail:
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[email protected] ABSTRACT moderate success rate of their experiment may be due to the method of converting the speech signal into a pulse train. It is a commonly held belief that languages and dialects can This method may destroy crucial prosodic information like be identified by pitch information alone. In most previous syllable or word boundaries. A similar argument may apply experiments, subjects were presented with pitch informa- to the other studies mentioned, as in all experiments listen- tion as well as with limited information on amplitude and ers were presented with lower-level, i.e. non-linguistic, in- timing but not with higher-level, i.e. linguistic, information formation only. as represented by intonation contours. The question arises An experiment that did include higher-level information as to whether higher-level information may significantly was reported by Romano [6]. Romano tested the hypothesis enhance success rates. To evaluate both approaches, two that some of the prosodic differences between regional experiments were carried out. In the first experiment, varieties of Italian persist in spoken standard Italian. Speak- listeners were presented with isolated pitch information ers from six villages of the Salento (South East of Italy) extracted from recordings of four varieties of German. In were asked to read sentences in standard Italian.