Visual comparison of speaker groups.
Sebastian Wankerl, Florian Hönig, Anton M. Batliner, Juan Rafael Orozco‐Arroyave, Elmar Nöth · OPUS (Augsburg University) · 2015
We describe a generic tool for visualising differences between two groups of speakers who produce a given word sequence.We do this by first time-aligning all recordings and then aggregating time-varying information within each group.By that, we can display prototypical loudness and tempo contours, and also spectrograms, together with information on variability and group effect size over time.An optional user-supplied segmentation (just needed for one of the recordings) can be used to relate local differences to individual phonemes.The system is validated with a group of speakers with Parkinson's disease and an age-matched control group.It will be provided as an opensource software package to the community.