The Royal Statistical Society's Lancashire and East Cumbria local group are pleased to announce that our next meeting will take place on Thursday 20th September. Our speaker will be Davide Pigoli (King's College London). The meeting will be held 16:00 – 17:00pm at Lancaster University (A54 Postgraduate Statistics Building) and will be followed by a wine reception in the Postgraduate Statistics Centre. All are welcome to attend.
Speaker: Davide Pigoli (King's College London)
Title: The statistical analysis of acoustic phonetic data: exploring differences between spoken Romance languages
Exploring phonetic changes between languages is relevant to understand their history and geographical spread. While many studies have considered differences in textual form or in phonetic transcription, it is somewhat more difficult to analyse speech recordings in this manner, although this is usually the dominant mode of transmission of language changes. Here, we propose a novel approach to explore phonetic changes, using log-spectrograms of speech recordings. After pre-processing the data to remove inherent individual differences, we identify time and frequency covariance functions as a feature of the language; in contrast, the mean depends mostly on the word that has been uttered. We use these means and covariances to postulate paths between languages, and we illustrate some preliminary results obtained when the model is applied to recordings of speakers of selected Romance languages. This is part of a joint work with P.Z. Hadjipantelis, J.S. Coleman and J.A.D. Aston.
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