Publication detail

Psychological Stress Detection in Speech Using Return-to-opening Phase Ratios in Glottis

STANĚK, M. SIGMUND, M.

Original Title

Psychological Stress Detection in Speech Using Return-to-opening Phase Ratios in Glottis

Type

journal article in Web of Science

Language

English

Original Abstract

This paper is focused on investigation of psychological stress in speech signal using shapes of normalised glottal pulses. The pulses were estimated by two algorithms: the Direct Inverse Filtering and Iterative and Adaptive Inverse Filtering. Normalised glottal pulses are divided into opening and return phase, and a feature vector characterizing each glottal pulse is calculated for a series of n percentage interval in time domain. Each feature vector is created by parameters describing its return to opening phase ratio, namely chosen intervals, kurtosis, skewness, and area. Further, psychological stress is detected by feature vector and four different classifiers. Experimental results show, that the best accuracy approaching 95 % is reached with Gaussian Mixture Models classifier. All the best results were obtained regarding only the interval of 5 % from both phase durations, i.e. for and after pulse peak, where the most significant differences between normal and stressed speech in feature vector are occurred. Presented experiments were performed on our own speech database containing both real stressed speech and normal speech.

Keywords

emotion recognition, glottal pulses, psychological stress, speech processing

Authors

STANĚK, M.; SIGMUND, M.

RIV year

2015

Released

12. 10. 2015

Publisher

Kaunas University of Technology

ISBN

1392-1215

Periodical

Elektronika Ir Elektrotechnika

Year of study

21

Number

5

State

Republic of Lithuania

Pages from

59

Pages to

63

Pages count

5

URL

http://www.eejournal.ktu.lt/index.php/elt/article/view/13336

Full text in the Digital Library

http://hdl.handle.net/11012/194765

BibTex

@article{BUT117402,
  author="Miroslav {Staněk} and Milan {Sigmund}",
  title="Psychological Stress Detection in Speech Using Return-to-opening Phase Ratios in Glottis",
  journal="Elektronika Ir Elektrotechnika",
  year="2015",
  volume="21",
  number="5",
  pages="59--63",
  doi="10.5755/j01.eee.21.5.13336",
  issn="1392-1215",
  url="http://www.eejournal.ktu.lt/index.php/elt/article/view/13336"
}