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Emotional and/or psychiatric state detection

  • US 9,058,816 B2
  • Filed: 08/23/2010
  • Issued: 06/16/2015
  • Est. Priority Date: 07/06/2010
  • Status: Active Grant
First Claim
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1. A method of classifying a current mental state of a person by analysing natural speech of the person, the method comprising:

  • receiving a natural speech signal obtained from the person;

    pre-processing the natural speech signal to effect frame extraction;

    extracting a glottal waveform from frames of the speech signal;

    retrieving pre-determined parameters, the parameters being derived from selected training glottal waveform features and the parameters defining at least one diagnostic class in accordance with a classifier;

    extracting selected glottal waveform features from the glottal waveform of the speech signal; and

    classifying the current mental state of the person by comparing the extracted selected glottal waveform features with the parameters and the classifier.

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