Proceedings Fonetik 2009 - Institutionen för lingvistik

Proceedings, FONETIK 2009, Dept. of Linguistics, Stockholm Universitythe data is drawn from a distribution consistentwith the null hypothesis where the prosodic datais assumed containing no explanatory linearcomponents at all. Finally, the consistency ofthe speaker independent regression coefficientswas inspected to ensure the validity and stabilityof the model.ResultsThe first feature selection resulted in a featurevector that contains no second order polynomials.The 15 features are described in Table 1. Aselected cross term is indicated as “feature Xfeature”.Table 1. Selected features in the first searchtrend corrected mean proportional random f0perturbation (jitter)average lengths of unvoiced segments longerthan 300msnormalised segment intensity distributionwidth variation50% values of f0 X percentages of unvoicedsegments between 250-700ms1% values of f0 X max lengths of silence segmentsaverage continuous f0 rise X average continuousf0 fallaverage continuous f0 fall X max steepness off0 fallaverage continuous f0 fall X max lengths ofvoiced segmentsmax continuous f0 fall X ratio of speech tolong unvoiced segments (speech = voiced + unvoiced