ISCA Archive Interspeech 2009
ISCA Archive Interspeech 2009

A microphone-independent visualization technique for speech disorders

Andreas Maier, Stefan Wenhardt, Tino Haderlein, Maria Schuster, Elmar Nöth

In this paper we introduce a novel method for the visualization of speech disorders. We demonstrate the method with disordered speech and a control group. However, both groups were recorded using two different microphones. The projection of the patient data using a single microphone yields significant correlations between the coordinates on the map and certain criteria of the disorder which were perceptually rated. However, projection of data from multiple microphones reduces this correlation. Usually, the acoustical mismatch between the microphones is greater than the mismatch between the speakers, i.e., not the disorders but the microphones form clusters in the visualization. Based on an extension of the Sammon mapping, we are able to create a map which projects the same speakers onto the same position even if multiple microphones are used. Furthermore, our method also restores the correlation between the map coordinates and the perceptual assessment.

doi: 10.21437/Interspeech.2009-284

Cite as: Maier, A., Wenhardt, S., Haderlein, T., Schuster, M., Nöth, E. (2009) A microphone-independent visualization technique for speech disorders. Proc. Interspeech 2009, 951-954, doi: 10.21437/Interspeech.2009-284

  author={Andreas Maier and Stefan Wenhardt and Tino Haderlein and Maria Schuster and Elmar Nöth},
  title={{A microphone-independent visualization technique for speech disorders}},
  booktitle={Proc. Interspeech 2009},